I get the same behaviour using Arch Linux on an Acer 3820T laptop, it used to work without a problem. Tried the latest openSUSE development version (KDE live from USB, 11.4 milestone 3) and had the same issue there.

The same happens with an Acer Aspire 3820G. With previous 2.6.35 version I had a non optimal responsiveness of the touchpad as well (too sensitive, making it difficult to manage two fingers taps). With 2.6.36 it has become laggy and jumpy, giving random results when moving even with 1 finger. In other words it's nearly unusable. I didn't try 2.6.37.

I'm posting the output of cat /proc/modules and lspci -vvv too. If you need more details or the output of other commands just ask.

=================================================

$ cat /proc/modules
rfcomm 35171 9 - Live 0xffffffffa067f000
sco 8700 2 - Live 0xffffffffa05c8000
bnep 8726 2 - Live 0xffffffffa05bc000
l2cap 40132 24 rfcomm,bnep, Live 0xffffffffa0735000
btusb 11353 4 - Live 0xffffffffa0312000
bluetooth 50581 9 rfcomm,sco,bnep,l2cap,btusb, Live 0xffffffffa061d000
nfsd 290779 2 - Live 0xffffffffa0859000
exportfs 3530 1 nfsd, Live 0xffffffffa0853000
ipv6 282668 0 - Live 0xffffffffa07f9000
joydev 9927 0 - Live 0xffffffffa07f1000
uvcvideo 60339 0 - Live 0xffffffffa07db000
videodev 44108 1 uvcvideo, Live 0xffffffffa07c9000
v4l1_compat 15610 2 uvcvideo,videodev, Live 0xffffffffa07c0000
v4l2_compat_ioctl32 10633 1 videodev, Live 0xffffffffa07b8000
option 15490 0 - Live 0xffffffffa07aa000
usb_wwan 8524 1 option, Live 0xffffffffa07a1000
usbserial 32152 2 option,usb_wwan, Live 0xffffffffa0791000
usb_storage 42796 0 - Live 0xffffffffa0728000
uinput 7674 1 - Live 0xffffffffa070c000
autofs4 24313 2 - Live 0xffffffffa0700000
nfs 294936 0 - Live 0xffffffffa06a3000
lockd 67055 2 nfsd,nfs, Live 0xffffffffa0689000
fscache 39183 1 nfs, Live 0xffffffffa0670000
snd_seq_dummy 1463 0 - Live 0xffffffffa067c000
nfs_acl 2295 2 nfsd,nfs, Live 0xffffffffa066a000
snd_seq_oss 28792 0 - Live 0xffffffffa065b000
snd_seq_midi_event 5436 1 snd_seq_oss, Live 0xffffffffa0595000
auth_rpcgss 40762 2 nfsd,nfs, Live 0xffffffffa0644000
snd_seq 50146 5 snd_seq_dummy,snd_seq_oss,snd_seq_midi_event, Live 0xffffffffa062e000
rfkill 16010 2 bluetooth, Live 0xffffffffa058f000
snd_seq_device 5297 3 snd_seq_dummy,snd_seq_oss,snd_seq, Live 0xffffffffa0570000
snd_pcm_oss 39189 0 - Live 0xffffffffa0611000
led_class 2363 0 - Live 0xffffffffa02e4000
snd_mixer_oss 17106 1 snd_pcm_oss, Live 0xffffffffa0549000
ac 3105 0 - Live 0xffffffffa002b000
battery 10103 0 - Live 0xffffffffa0298000
snd_hda_codec_atihdmi 2739 1 - Live 0xffffffffa000a000
sunrpc 188397 6 nfsd,nfs,lockd,nfs_acl,auth_rpcgss, Live 0xffffffffa04fe000
fuse 62808 3 - Live 0xffffffffa0537000
snd_hda_codec_realtek 269269 1 - Live 0xffffffffa05cd000
wmi 6894 0 - Live 0xffffffffa00e5000
cpufreq_powersave 958 0 - Live 0xffffffffa0028000
psmouse 54040 0 - Live 0xffffffffa0598000
snd_hda_intel 22285 2 - Live 0xffffffffa05c0000
lib80211_crypt_tkip 8485 0 - Live 0xffffffffa05a8000
snd_hda_codec 77223 3 snd_hda_codec_atihdmi,snd_hda_codec_realtek,snd_hda_intel, Live 0xffffffffa057a000
snd_hwdep 6110 1 snd_hda_codec, Live 0xffffffffa0573000
snd_pcm 71445 3 snd_pcm_oss,snd_hda_intel,snd_hda_codec, Live 0xffffffffa0557000
snd_timer 19265 2 snd_seq,snd_pcm, Live 0xffffffffa0530000
cpufreq_ondemand 8439 4 - Live 0xffffffffa029c000
sg 25652 0 - Live 0xffffffffa0309000
snd 57626 15 snd_seq_oss,snd_seq,snd_seq_device,snd_pcm_oss,snd_mixer_oss,snd_hda_codec_realtek,snd_hda_intel,snd_hda_codec,snd_hwdep,snd_pcm,snd_timer, Live 0xffffffffa02f0000
soundcore 6065 1 snd, Live 0xffffffffa0294000
i2c_i801 9062 0 - Live 0xffffffffa02ac000
snd_page_alloc 7249 2 snd_hda_intel,snd_pcm, Live 0xffffffffa0290000
wl 1944321 0 - Live 0xffffffffa0321000 (P)
acpi_cpufreq 5993 1 - Live 0xffffffffa007e000
evdev 8775 16 - Live 0xffffffffa022f000
freq_table 2355 2 cpufreq_ondemand,acpi_cpufreq, Live 0xffffffffa01dd000
ehci_hcd 37024 0 - Live 0xffffffffa02d8000
thermal 12338 0 - Live 0xffffffffa01d7000
serio_raw 4486 0 - Live 0xffffffffa0319000
lib80211 3966 2 lib80211_crypt_tkip,wl, Live 0xffffffffa0316000
iTCO_wdt 10669 0 - Live 0xffffffffa001c000
iTCO_vendor_support 1833 1 iTCO_wdt, Live 0xffffffffa0236000
atl1c 32139 0 - Live 0xffffffffa02e6000
usbcore 146545 8 btusb,uvcvideo,option,usb_wwan,usbserial,usb_storage,ehci_hcd, Live 0xffffffffa02b2000
processor 28966 5 acpi_cpufreq, Live 0xffffffffa02a2000
mperf 1243 1 acpi_cpufreq, Live 0xffffffffa0081000
rtc_cmos 9022 0 - Live 0xffffffffa022a000
rtc_core 14439 1 rtc_cmos, Live 0xffffffffa00d9000
rtc_lib 1898 1 rtc_core, Live 0xffffffffa0038000
ext4 310908 3 - Live 0xffffffffa0242000
mbcache 5746 1 ext4, Live 0xffffffffa0031000
jbd2 69523 1 ext4, Live 0xffffffffa01c4000
crc16 1297 2 l2cap,ext4, Live 0xffffffffa0012000
sd_mod 29536 5 - Live 0xffffffffa00cf000
ahci 20929 4 - Live 0xffffffffa023a000
libahci 18846 1 ahci, Live 0xffffffffa00de000
libata 157227 2 ahci,libahci, Live 0xffffffffa0201000
scsi_mod 124384 4 usb_storage,sg,sd_mod,libata, Live 0xffffffffa01e0000
radeon 888585 0 - Live 0xffffffffa00e9000
ttm 52920 1 radeon, Live 0xffffffffa0066000
i915 302295 4 - Live 0xffffffffa0083000
drm_kms_helper 24903 2 radeon,i915, Live 0xffffffffa0075000
drm 164578 6 radeon,ttm,i915,drm_kms_helper, Live 0xffffffffa003b000
i2c_algo_bit 5231 2 radeon,i915, Live 0xffffffffa0034000
button 4834 1 i915, Live 0xffffffffa002d000
i2c_core 18987 7 videodev,i2c_i801,radeon,i915,drm_kms_helper,drm,i2c_algo_bit, Live 0xffffffffa0021000
video 19337 1 i915, Live 0xffffffffa0015000
output 1972 1 video, Live 0xffffffffa000f000
intel_agp 30323 2 i915, Live 0xffffffffa0000000

----------------------------

$ lspci -vvv
00:00.0 Host bridge: Intel Corporation Core Processor DRAM Controller (rev 18)
	Subsystem: Acer Incorporated [ALI] Device 0364
	Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR+ FastB2B- DisINTx-
	Status: Cap+ 66MHz- UDF- FastB2B+ ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort+ >SERR- <PERR- INTx-
	Latency: 0
	Capabilities: [e0] Vendor Specific Information: Len=0c <?>
	Kernel driver in use: agpgart-intel
	Kernel modules: intel-agp

00:01.0 PCI bridge: Intel Corporation Core Processor PCI Express x16 Root Port (rev 18) (prog-if 00 [Normal decode])
	Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR+ FastB2B- DisINTx+
	Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
	Latency: 0, Cache Line Size: 64 bytes
	Bus: primary=00, secondary=02, subordinate=02, sec-latency=0
	I/O behind bridge: 00002000-00002fff
	Memory behind bridge: afe00000-afefffff
	Prefetchable memory behind bridge: 00000000b0000000-00000000bfffffff
	Secondary status: 66MHz- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- <SERR- <PERR-
	BridgeCtl: Parity- SERR- NoISA+ VGA- MAbort- >Reset- FastB2B-
		PriDiscTmr- SecDiscTmr- DiscTmrStat- DiscTmrSERREn-
	Capabilities: [88] Subsystem: Acer Incorporated [ALI] Device 0364
	Capabilities: [80] Power Management version 3
		Flags: PMEClk- DSI- D1- D2- AuxCurrent=0mA PME(D0+,D1-,D2-,D3hot+,D3cold+)
		Status: D0 NoSoftRst+ PME-Enable- DSel=0 DScale=0 PME-
	Capabilities: [90] MSI: Enable+ Count=1/1 Maskable- 64bit-
		Address: fee0f00c  Data: 4149
	Capabilities: [a0] Express (v2) Root Port (Slot+), MSI 00
		DevCap:	MaxPayload 128 bytes, PhantFunc 0, Latency L0s <64ns, L1 <1us
			ExtTag- RBE+ FLReset-
		DevCtl:	Report errors: Correctable- Non-Fatal- Fatal- Unsupported-
			RlxdOrd- ExtTag- PhantFunc- AuxPwr- NoSnoop-
			MaxPayload 128 bytes, MaxReadReq 128 bytes
		DevSta:	CorrErr- UncorrErr- FatalErr- UnsuppReq- AuxPwr- TransPend-
		LnkCap:	Port #2, Speed 2.5GT/s, Width x16, ASPM L0s L1, Latency L0 <256ns, L1 <4us
			ClockPM- Surprise- LLActRep- BwNot+
		LnkCtl:	ASPM L1 Enabled; RCB 64 bytes Disabled- Retrain- CommClk+
			ExtSynch- ClockPM- AutWidDis- BWInt- AutBWInt-
		LnkSta:	Speed 2.5GT/s, Width x16, TrErr- Train- SlotClk+ DLActive- BWMgmt- ABWMgmt-
		SltCap:	AttnBtn- PwrCtrl- MRL- AttnInd- PwrInd- HotPlug- Surprise-
			Slot #17, PowerLimit 75.000W; Interlock- NoCompl+
		SltCtl:	Enable: AttnBtn- PwrFlt- MRL- PresDet- CmdCplt- HPIrq- LinkChg-
			Control: AttnInd Unknown, PwrInd Unknown, Power- Interlock-
		SltSta:	Status: AttnBtn- PowerFlt- MRL- CmdCplt- PresDet- Interlock-
			Changed: MRL- PresDet+ LinkState-
		RootCtl: ErrCorrectable- ErrNon-Fatal- ErrFatal- PMEIntEna- CRSVisible-
		RootCap: CRSVisible-
		RootSta: PME ReqID 0000, PMEStatus- PMEPending-
		DevCap2: Completion Timeout: Not Supported, TimeoutDis- ARIFwd-
		DevCtl2: Completion Timeout: 50us to 50ms, TimeoutDis- ARIFwd-
		LnkCtl2: Target Link Speed: 2.5GT/s, EnterCompliance- SpeedDis-, Selectable De-emphasis: -6dB
			 Transmit Margin: Normal Operating Range, EnterModifiedCompliance- ComplianceSOS-
			 Compliance De-emphasis: -6dB
		LnkSta2: Current De-emphasis Level: -6dB
	Capabilities: [100 v1] Virtual Channel
		Caps:	LPEVC=0 RefClk=100ns PATEntryBits=1
		Arb:	Fixed- WRR32- WRR64- WRR128-
		Ctrl:	ArbSelect=Fixed
		Status:	InProgress-
		VC0:	Caps:	PATOffset=00 MaxTimeSlots=1 RejSnoopTrans-
			Arb:	Fixed+ WRR32- WRR64- WRR128- TWRR128- WRR256-
			Ctrl:	Enable+ ID=0 ArbSelect=Fixed TC/VC=01
			Status:	NegoPending- InProgress-
	Kernel driver in use: pcieport
	Kernel modules: shpchp

00:02.0 VGA compatible controller: Intel Corporation Core Processor Integrated Graphics Controller (rev 18) (prog-if 00 [VGA controller])
	Subsystem: Acer Incorporated [ALI] Device 0365
	Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx+
	Status: Cap+ 66MHz- UDF- FastB2B+ ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
	Latency: 0
	Interrupt: pin A routed to IRQ 43
	Region 0: Memory at f0000000 (64-bit, non-prefetchable) [size=4M]
	Region 2: Memory at d0000000 (64-bit, prefetchable) [size=256M]
	Region 4: I/O ports at 1800 [size=8]
	Expansion ROM at <unassigned> [disabled]
	Capabilities: [90] MSI: Enable+ Count=1/1 Maskable- 64bit-
		Address: fee0f00c  Data: 4161
	Capabilities: [d0] Power Management version 2
		Flags: PMEClk- DSI+ D1- D2- AuxCurrent=0mA PME(D0-,D1-,D2-,D3hot-,D3cold-)
		Status: D0 NoSoftRst- PME-Enable- DSel=0 DScale=0 PME-
	Capabilities: [a4] PCI Advanced Features
		AFCap: TP+ FLR+
		AFCtrl: FLR-
		AFStatus: TP-
	Kernel driver in use: i915
	Kernel modules: i915

00:16.0 Communication controller: Intel Corporation 5 Series/3400 Series Chipset HECI Controller (rev 06)
	Subsystem: Acer Incorporated [ALI] Device 0364
	Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx-
	Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
	Latency: 0
	Interrupt: pin A routed to IRQ 11
	Region 0: Memory at f0804000 (64-bit, non-prefetchable) [size=16]
	Capabilities: [50] Power Management version 3
		Flags: PMEClk- DSI- D1- D2- AuxCurrent=0mA PME(D0+,D1-,D2-,D3hot+,D3cold+)
		Status: D0 NoSoftRst+ PME-Enable- DSel=0 DScale=0 PME-
	Capabilities: [8c] MSI: Enable- Count=1/1 Maskable- 64bit+
		Address: 0000000000000000  Data: 0000

00:1a.0 USB Controller: Intel Corporation 5 Series/3400 Series Chipset USB2 Enhanced Host Controller (rev 05) (prog-if 20 [EHCI])
	Subsystem: Acer Incorporated [ALI] Device 0364
	Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR+ FastB2B- DisINTx-
	Status: Cap+ 66MHz- UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
	Latency: 0
	Interrupt: pin A routed to IRQ 16
	Region 0: Memory at f0806000 (32-bit, non-prefetchable) [size=1K]
	Capabilities: [50] Power Management version 2
		Flags: PMEClk- DSI- D1- D2- AuxCurrent=375mA PME(D0+,D1-,D2-,D3hot+,D3cold+)
		Status: D0 NoSoftRst- PME-Enable- DSel=0 DScale=0 PME-
	Capabilities: [58] Debug port: BAR=1 offset=00a0
	Capabilities: [98] PCI Advanced Features
		AFCap: TP+ FLR+
		AFCtrl: FLR-
		AFStatus: TP-
	Kernel driver in use: ehci_hcd
	Kernel modules: ehci-hcd

00:1b.0 Audio device: Intel Corporation 5 Series/3400 Series Chipset High Definition Audio (rev 05)
	Subsystem: Acer Incorporated [ALI] Device 0364
	Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR+ FastB2B- DisINTx+
	Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
	Latency: 0, Cache Line Size: 64 bytes
	Interrupt: pin A routed to IRQ 46
	Region 0: Memory at f0800000 (64-bit, non-prefetchable) [size=16K]
	Capabilities: [50] Power Management version 2
		Flags: PMEClk- DSI- D1- D2- AuxCurrent=55mA PME(D0+,D1-,D2-,D3hot+,D3cold+)
		Status: D0 NoSoftRst- PME-Enable- DSel=0 DScale=0 PME-
	Capabilities: [60] MSI: Enable+ Count=1/1 Maskable- 64bit+
		Address: 00000000fee0f00c  Data: 4199
	Capabilities: [70] Express (v1) Root Complex Integrated Endpoint, MSI 00
		DevCap:	MaxPayload 128 bytes, PhantFunc 0, Latency L0s <64ns, L1 <1us
			ExtTag- RBE- FLReset+
		DevCtl:	Report errors: Correctable- Non-Fatal- Fatal- Unsupported-
			RlxdOrd- ExtTag- PhantFunc- AuxPwr- NoSnoop+
			MaxPayload 128 bytes, MaxReadReq 128 bytes
		DevSta:	CorrErr- UncorrErr- FatalErr- UnsuppReq- AuxPwr+ TransPend-
		LnkCap:	Port #0, Speed unknown, Width x0, ASPM unknown, Latency L0 <64ns, L1 <1us
			ClockPM- Surprise- LLActRep- BwNot-
		LnkCtl:	ASPM Disabled; Disabled- Retrain- CommClk-
			ExtSynch- ClockPM- AutWidDis- BWInt- AutBWInt-
		LnkSta:	Speed unknown, Width x0, TrErr- Train- SlotClk- DLActive- BWMgmt- ABWMgmt-
	Capabilities: [100 v1] Virtual Channel
		Caps:	LPEVC=0 RefClk=100ns PATEntryBits=1
		Arb:	Fixed- WRR32- WRR64- WRR128-
		Ctrl:	ArbSelect=Fixed
		Status:	InProgress-
		VC0:	Caps:	PATOffset=00 MaxTimeSlots=1 RejSnoopTrans-
			Arb:	Fixed- WRR32- WRR64- WRR128- TWRR128- WRR256-
			Ctrl:	Enable+ ID=0 ArbSelect=Fixed TC/VC=01
			Status:	NegoPending- InProgress-
		VC1:	Caps:	PATOffset=00 MaxTimeSlots=1 RejSnoopTrans-
			Arb:	Fixed- WRR32- WRR64- WRR128- TWRR128- WRR256-
			Ctrl:	Enable+ ID=1 ArbSelect=Fixed TC/VC=02
			Status:	NegoPending- InProgress-
	Capabilities: [130 v1] Root Complex Link
		Desc:	PortNumber=0f ComponentID=00 EltType=Config
		Link0:	Desc:	TargetPort=00 TargetComponent=00 AssocRCRB- LinkType=MemMapped LinkValid+
			Addr:	00000000fed1c000
	Kernel driver in use: HDA Intel
	Kernel modules: snd-hda-intel

00:1c.0 PCI bridge: Intel Corporation 5 Series/3400 Series Chipset PCI Express Root Port 1 (rev 05) (prog-if 00 [Normal decode])
	Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR+ FastB2B- DisINTx+
	Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
	Latency: 0, Cache Line Size: 64 bytes
	Bus: primary=00, secondary=03, subordinate=04, sec-latency=0
	I/O behind bridge: 00003000-00003fff
	Memory behind bridge: f0400000-f04fffff
	Prefetchable memory behind bridge: 00000000f0a00000-00000000f0bfffff
	Secondary status: 66MHz- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- <SERR- <PERR-
	BridgeCtl: Parity- SERR- NoISA+ VGA- MAbort- >Reset- FastB2B-
		PriDiscTmr- SecDiscTmr- DiscTmrStat- DiscTmrSERREn-
	Capabilities: [40] Express (v2) Root Port (Slot+), MSI 00
		DevCap:	MaxPayload 128 bytes, PhantFunc 0, Latency L0s <64ns, L1 <1us
			ExtTag- RBE+ FLReset-
		DevCtl:	Report errors: Correctable- Non-Fatal- Fatal- Unsupported-
			RlxdOrd- ExtTag- PhantFunc- AuxPwr- NoSnoop-
			MaxPayload 128 bytes, MaxReadReq 128 bytes
		DevSta:	CorrErr- UncorrErr- FatalErr- UnsuppReq- AuxPwr+ TransPend-
		LnkCap:	Port #1, Speed 2.5GT/s, Width x1, ASPM L0s L1, Latency L0 <256ns, L1 <4us
			ClockPM- Surprise- LLActRep+ BwNot-
		LnkCtl:	ASPM L1 Enabled; RCB 64 bytes Disabled- Retrain- CommClk+
			ExtSynch- ClockPM- AutWidDis- BWInt- AutBWInt-
		LnkSta:	Speed 2.5GT/s, Width x1, TrErr- Train- SlotClk+ DLActive+ BWMgmt- ABWMgmt-
		SltCap:	AttnBtn- PwrCtrl- MRL- AttnInd- PwrInd- HotPlug+ Surprise+
			Slot #0, PowerLimit 10.000W; Interlock- NoCompl+
		SltCtl:	Enable: AttnBtn- PwrFlt- MRL- PresDet+ CmdCplt- HPIrq- LinkChg-
			Control: AttnInd Unknown, PwrInd Unknown, Power- Interlock-
		SltSta:	Status: AttnBtn- PowerFlt- MRL- CmdCplt- PresDet+ Interlock-
			Changed: MRL- PresDet- LinkState+
		RootCtl: ErrCorrectable- ErrNon-Fatal- ErrFatal- PMEIntEna- CRSVisible-
		RootCap: CRSVisible-
		RootSta: PME ReqID 0000, PMEStatus- PMEPending-
		DevCap2: Completion Timeout: Range BC, TimeoutDis+ ARIFwd-
		DevCtl2: Completion Timeout: 50us to 50ms, TimeoutDis- ARIFwd-
		LnkCtl2: Target Link Speed: 2.5GT/s, EnterCompliance- SpeedDis-, Selectable De-emphasis: -6dB
			 Transmit Margin: Normal Operating Range, EnterModifiedCompliance- ComplianceSOS-
			 Compliance De-emphasis: -6dB
		LnkSta2: Current De-emphasis Level: -6dB
	Capabilities: [80] MSI: Enable+ Count=1/1 Maskable- 64bit-
		Address: fee0f00c  Data: 4151
	Capabilities: [90] Subsystem: Acer Incorporated [ALI] Device 0364
	Capabilities: [a0] Power Management version 2
		Flags: PMEClk- DSI- D1- D2- AuxCurrent=0mA PME(D0+,D1-,D2-,D3hot+,D3cold+)
		Status: D0 NoSoftRst- PME-Enable- DSel=0 DScale=0 PME-
	Kernel driver in use: pcieport
	Kernel modules: shpchp

00:1c.1 PCI bridge: Intel Corporation 5 Series/3400 Series Chipset PCI Express Root Port 2 (rev 05) (prog-if 00 [Normal decode])
	Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR+ FastB2B- DisINTx+
	Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
	Latency: 0, Cache Line Size: 64 bytes
	Bus: primary=00, secondary=05, subordinate=05, sec-latency=0
	I/O behind bridge: 00004000-00004fff
	Memory behind bridge: f0500000-f05fffff
	Prefetchable memory behind bridge: 00000000a0000000-00000000a01fffff
	Secondary status: 66MHz- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- <SERR- <PERR-
	BridgeCtl: Parity- SERR- NoISA+ VGA- MAbort- >Reset- FastB2B-
		PriDiscTmr- SecDiscTmr- DiscTmrStat- DiscTmrSERREn-
	Capabilities: [40] Express (v2) Root Port (Slot+), MSI 00
		DevCap:	MaxPayload 128 bytes, PhantFunc 0, Latency L0s <64ns, L1 <1us
			ExtTag- RBE+ FLReset-
		DevCtl:	Report errors: Correctable- Non-Fatal- Fatal- Unsupported-
			RlxdOrd- ExtTag- PhantFunc- AuxPwr- NoSnoop-
			MaxPayload 128 bytes, MaxReadReq 128 bytes
		DevSta:	CorrErr- UncorrErr- FatalErr- UnsuppReq- AuxPwr+ TransPend-
		LnkCap:	Port #2, Speed 2.5GT/s, Width x1, ASPM L0s L1, Latency L0 <256ns, L1 <4us
			ClockPM- Surprise- LLActRep+ BwNot-
		LnkCtl:	ASPM L1 Enabled; RCB 64 bytes Disabled- Retrain- CommClk+
			ExtSynch- ClockPM- AutWidDis- BWInt- AutBWInt-
		LnkSta:	Speed 2.5GT/s, Width x1, TrErr- Train- SlotClk+ DLActive+ BWMgmt- ABWMgmt-
		SltCap:	AttnBtn- PwrCtrl- MRL- AttnInd- PwrInd- HotPlug+ Surprise+
			Slot #1, PowerLimit 10.000W; Interlock- NoCompl+
		SltCtl:	Enable: AttnBtn- PwrFlt- MRL- PresDet+ CmdCplt- HPIrq- LinkChg-
			Control: AttnInd Unknown, PwrInd Unknown, Power- Interlock-
		SltSta:	Status: AttnBtn- PowerFlt- MRL- CmdCplt- PresDet+ Interlock-
			Changed: MRL- PresDet- LinkState+
		RootCtl: ErrCorrectable- ErrNon-Fatal- ErrFatal- PMEIntEna- CRSVisible-
		RootCap: CRSVisible-
		RootSta: PME ReqID 0000, PMEStatus- PMEPending-
		DevCap2: Completion Timeout: Range BC, TimeoutDis+ ARIFwd-
		DevCtl2: Completion Timeout: 50us to 50ms, TimeoutDis- ARIFwd-
		LnkCtl2: Target Link Speed: 2.5GT/s, EnterCompliance- SpeedDis-, Selectable De-emphasis: -6dB
			 Transmit Margin: Normal Operating Range, EnterModifiedCompliance- ComplianceSOS-
			 Compliance De-emphasis: -6dB
		LnkSta2: Current De-emphasis Level: -6dB
	Capabilities: [80] MSI: Enable+ Count=1/1 Maskable- 64bit-
		Address: fee0f00c  Data: 4159
	Capabilities: [90] Subsystem: Acer Incorporated [ALI] Device 0364
	Capabilities: [a0] Power Management version 2
		Flags: PMEClk- DSI- D1- D2- AuxCurrent=0mA PME(D0+,D1-,D2-,D3hot+,D3cold+)
		Status: D0 NoSoftRst- PME-Enable- DSel=0 DScale=0 PME-
	Kernel driver in use: pcieport
	Kernel modules: shpchp

00:1d.0 USB Controller: Intel Corporation 5 Series/3400 Series Chipset USB2 Enhanced Host Controller (rev 05) (prog-if 20 [EHCI])
	Subsystem: Acer Incorporated [ALI] Device 0364
	Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR+ FastB2B- DisINTx-
	Status: Cap+ 66MHz- UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
	Latency: 0
	Interrupt: pin A routed to IRQ 23
	Region 0: Memory at f0807000 (32-bit, non-prefetchable) [size=1K]
	Capabilities: [50] Power Management version 2
		Flags: PMEClk- DSI- D1- D2- AuxCurrent=375mA PME(D0+,D1-,D2-,D3hot+,D3cold+)
		Status: D0 NoSoftRst- PME-Enable- DSel=0 DScale=0 PME-
	Capabilities: [58] Debug port: BAR=1 offset=00a0
	Capabilities: [98] PCI Advanced Features
		AFCap: TP+ FLR+
		AFCtrl: FLR-
		AFStatus: TP-
	Kernel driver in use: ehci_hcd
	Kernel modules: ehci-hcd

00:1e.0 PCI bridge: Intel Corporation 82801 Mobile PCI Bridge (rev a5) (prog-if 01 [Subtractive decode])
	Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR+ FastB2B- DisINTx-
	Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
	Latency: 0
	Bus: primary=00, secondary=0f, subordinate=0f, sec-latency=0
	I/O behind bridge: 0000f000-00000fff
	Memory behind bridge: fff00000-000fffff
	Prefetchable memory behind bridge: 00000000fff00000-00000000000fffff
	Secondary status: 66MHz- FastB2B+ ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort+ <SERR- <PERR-
	BridgeCtl: Parity- SERR- NoISA+ VGA- MAbort- >Reset- FastB2B-
		PriDiscTmr- SecDiscTmr- DiscTmrStat- DiscTmrSERREn-
	Capabilities: [50] Subsystem: Acer Incorporated [ALI] Device 0364

00:1f.0 ISA bridge: Intel Corporation Mobile 5 Series Chipset LPC Interface Controller (rev 05)
	Subsystem: Acer Incorporated [ALI] Device 0364
	Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx-
	Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
	Latency: 0
	Capabilities: [e0] Vendor Specific Information: Len=10 <?>
	Kernel modules: iTCO_wdt

00:1f.2 SATA controller: Intel Corporation 5 Series/3400 Series Chipset 4 port SATA AHCI Controller (rev 05) (prog-if 01 [AHCI 1.0])
	Subsystem: Acer Incorporated [ALI] Device 0364
	Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx+
	Status: Cap+ 66MHz+ UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
	Latency: 0
	Interrupt: pin B routed to IRQ 45
	Region 0: I/O ports at 1818 [size=8]
	Region 1: I/O ports at 180c [size=4]
	Region 2: I/O ports at 1810 [size=8]
	Region 3: I/O ports at 1808 [size=4]
	Region 4: I/O ports at 1820 [size=32]
	Region 5: Memory at f0808000 (32-bit, non-prefetchable) [size=2K]
	Capabilities: [80] MSI: Enable+ Count=1/1 Maskable- 64bit-
		Address: fee0f00c  Data: 4179
	Capabilities: [70] Power Management version 3
		Flags: PMEClk- DSI- D1- D2- AuxCurrent=0mA PME(D0-,D1-,D2-,D3hot+,D3cold-)
		Status: D0 NoSoftRst+ PME-Enable- DSel=0 DScale=0 PME-
	Capabilities: [a8] SATA HBA v1.0 BAR4 Offset=00000004
	Capabilities: [b0] PCI Advanced Features
		AFCap: TP+ FLR+
		AFCtrl: FLR-
		AFStatus: TP-
	Kernel driver in use: ahci
	Kernel modules: ahci

00:1f.3 SMBus: Intel Corporation 5 Series/3400 Series Chipset SMBus Controller (rev 05)
	Subsystem: Acer Incorporated [ALI] Device 0364
	Control: I/O+ Mem+ BusMaster- SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR+ FastB2B- DisINTx-
	Status: Cap- 66MHz- UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
	Interrupt: pin C routed to IRQ 18
	Region 0: Memory at f0809000 (64-bit, non-prefetchable) [size=256]
	Region 4: I/O ports at 1840 [size=32]
	Kernel modules: i2c-i801

00:1f.6 Signal processing controller: Intel Corporation 5 Series/3400 Series Chipset Thermal Subsystem (rev 05)
	Subsystem: Acer Incorporated [ALI] Device 0364
	Control: I/O- Mem+ BusMaster- SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx-
	Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
	Interrupt: pin C routed to IRQ 10
	Region 0: Memory at f080a000 (64-bit, non-prefetchable) [size=4K]
	Capabilities: [50] Power Management version 3
		Flags: PMEClk- DSI+ D1- D2- AuxCurrent=0mA PME(D0-,D1-,D2-,D3hot-,D3cold-)
		Status: D0 NoSoftRst+ PME-Enable- DSel=0 DScale=0 PME-
	Capabilities: [80] MSI: Enable- Count=1/1 Maskable- 64bit-
		Address: 00000000  Data: 0000

02:00.0 VGA compatible controller: ATI Technologies Inc Redwood [Radeon HD 5600 Series] (rev ff) (prog-if ff)
	!!! Unknown header type 7f
	Kernel driver in use: radeon
	Kernel modules: radeon

02:00.1 Audio device: ATI Technologies Inc Redwood HDMI Audio [Radeon HD 5600 Series] (rev ff) (prog-if ff)
	!!! Unknown header type 7f
	Kernel driver in use: HDA Intel

03:00.0 Ethernet controller: Atheros Communications AR8151 v1.0 Gigabit Ethernet (rev c0)
	Subsystem: Acer Incorporated [ALI] Device 0364
	Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR+ FastB2B- DisINTx+
	Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
	Latency: 0, Cache Line Size: 64 bytes
	Interrupt: pin A routed to IRQ 48
	Region 0: Memory at f0400000 (64-bit, non-prefetchable) [size=256K]
	Region 2: I/O ports at 3000 [size=128]
	Capabilities: [40] Power Management version 3
		Flags: PMEClk- DSI- D1- D2- AuxCurrent=375mA PME(D0+,D1+,D2+,D3hot+,D3cold+)
		Status: D0 NoSoftRst+ PME-Enable- DSel=0 DScale=0 PME-
	Capabilities: [48] MSI: Enable+ Count=1/1 Maskable- 64bit+
		Address: 00000000fee0f00c  Data: 41a9
	Capabilities: [58] Express (v1) Endpoint, MSI 00
		DevCap:	MaxPayload 4096 bytes, PhantFunc 0, Latency L0s unlimited, L1 unlimited
			ExtTag- AttnBtn+ AttnInd+ PwrInd+ RBE+ FLReset-
		DevCtl:	Report errors: Correctable- Non-Fatal- Fatal- Unsupported-
			RlxdOrd- ExtTag- PhantFunc- AuxPwr- NoSnoop-
			MaxPayload 128 bytes, MaxReadReq 512 bytes
		DevSta:	CorrErr- UncorrErr+ FatalErr- UnsuppReq+ AuxPwr+ TransPend-
		LnkCap:	Port #0, Speed 2.5GT/s, Width x1, ASPM L0s L1, Latency L0 unlimited, L1 unlimited
			ClockPM+ Surprise- LLActRep- BwNot-
		LnkCtl:	ASPM L1 Enabled; RCB 64 bytes Disabled- Retrain- CommClk+
			ExtSynch- ClockPM+ AutWidDis- BWInt- AutBWInt-
		LnkSta:	Speed 2.5GT/s, Width x1, TrErr- Train- SlotClk+ DLActive- BWMgmt- ABWMgmt-
	Capabilities: [6c] Vital Product Data
		Not readable
	Capabilities: [100 v1] Advanced Error Reporting
		UESta:	DLP- SDES- TLP- FCP- CmpltTO- CmpltAbrt- UnxCmplt- RxOF- MalfTLP- ECRC- UnsupReq+ ACSViol-
		UEMsk:	DLP- SDES- TLP- FCP- CmpltTO- CmpltAbrt- UnxCmplt- RxOF- MalfTLP- ECRC- UnsupReq- ACSViol-
		UESvrt:	DLP- SDES+ TLP- FCP- CmpltTO- CmpltAbrt- UnxCmplt- RxOF+ MalfTLP+ ECRC- UnsupReq- ACSViol-
		CESta:	RxErr- BadTLP- BadDLLP- Rollover- Timeout- NonFatalErr-
		CEMsk:	RxErr- BadTLP- BadDLLP- Rollover- Timeout- NonFatalErr+
		AERCap:	First Error Pointer: 14, GenCap+ CGenEn- ChkCap+ ChkEn-
	Capabilities: [180 v1] Device Serial Number ff-98-0c-99-00-26-2d-ff
	Kernel driver in use: atl1c
	Kernel modules: atl1c

05:00.0 Network controller: Broadcom Corporation Device 4357 (rev 01)
	Subsystem: Foxconn International, Inc. Device e021
	Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR+ FastB2B- DisINTx-
	Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
	Latency: 0, Cache Line Size: 64 bytes
	Interrupt: pin A routed to IRQ 17
	Region 0: Memory at f0500000 (64-bit, non-prefetchable) [size=16K]
	Capabilities: [40] Power Management version 3
		Flags: PMEClk- DSI- D1+ D2+ AuxCurrent=0mA PME(D0+,D1-,D2-,D3hot+,D3cold+)
		Status: D0 NoSoftRst+ PME-Enable- DSel=0 DScale=2 PME-
	Capabilities: [58] Vendor Specific Information: Len=78 <?>
	Capabilities: [48] MSI: Enable- Count=1/1 Maskable- 64bit+
		Address: 0000000000000000  Data: 0000
	Capabilities: [d0] Express (v1) Endpoint, MSI 00
		DevCap:	MaxPayload 128 bytes, PhantFunc 0, Latency L0s <4us, L1 unlimited
			ExtTag+ AttnBtn- AttnInd- PwrInd- RBE+ FLReset-
		DevCtl:	Report errors: Correctable- Non-Fatal- Fatal- Unsupported-
			RlxdOrd- ExtTag- PhantFunc- AuxPwr- NoSnoop-
			MaxPayload 128 bytes, MaxReadReq 128 bytes
		DevSta:	CorrErr+ UncorrErr- FatalErr- UnsuppReq+ AuxPwr+ TransPend-
		LnkCap:	Port #0, Speed 2.5GT/s, Width x1, ASPM L0s L1, Latency L0 <4us, L1 <64us
			ClockPM+ Surprise- LLActRep+ BwNot-
		LnkCtl:	ASPM L1 Enabled; RCB 64 bytes Disabled- Retrain- CommClk+
			ExtSynch- ClockPM+ AutWidDis- BWInt- AutBWInt-
		LnkSta:	Speed 2.5GT/s, Width x1, TrErr- Train- SlotClk+ DLActive+ BWMgmt- ABWMgmt-
	Capabilities: [100 v1] Advanced Error Reporting
		UESta:	DLP- SDES- TLP- FCP- CmpltTO- CmpltAbrt- UnxCmplt- RxOF- MalfTLP- ECRC- UnsupReq- ACSViol-
		UEMsk:	DLP- SDES- TLP- FCP- CmpltTO- CmpltAbrt- UnxCmplt- RxOF- MalfTLP- ECRC- UnsupReq- ACSViol-
		UESvrt:	DLP+ SDES- TLP- FCP+ CmpltTO- CmpltAbrt- UnxCmplt- RxOF+ MalfTLP+ ECRC- UnsupReq- ACSViol-
		CESta:	RxErr- BadTLP- BadDLLP- Rollover- Timeout- NonFatalErr+
		CEMsk:	RxErr- BadTLP- BadDLLP- Rollover- Timeout- NonFatalErr+
		AERCap:	First Error Pointer: 14, GenCap+ CGenEn- ChkCap+ ChkEn-
	Capabilities: [13c v1] Virtual Channel
		Caps:	LPEVC=0 RefClk=100ns PATEntryBits=1
		Arb:	Fixed- WRR32- WRR64- WRR128-
		Ctrl:	ArbSelect=Fixed
		Status:	InProgress-
		VC0:	Caps:	PATOffset=00 MaxTimeSlots=1 RejSnoopTrans-
			Arb:	Fixed- WRR32- WRR64- WRR128- TWRR128- WRR256-
			Ctrl:	Enable+ ID=0 ArbSelect=Fixed TC/VC=ff
			Status:	NegoPending- InProgress-
	Capabilities: [160 v1] Device Serial Number 00-00-00-ff-ff-5f-78-e4
	Capabilities: [16c v1] Power Budgeting <?>
	Kernel driver in use: wl
	Kernel modules: wl

ff:00.0 Host bridge: Intel Corporation Core Processor QuickPath Architecture Generic Non-core Registers (rev 05)
	Subsystem: Intel Corporation Device 8086
	Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx-
	Status: Cap- 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
	Latency: 0

ff:00.1 Host bridge: Intel Corporation Core Processor QuickPath Architecture System Address Decoder (rev 05)
	Subsystem: Intel Corporation Device 8086
	Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx-
	Status: Cap- 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
	Latency: 0

ff:02.0 Host bridge: Intel Corporation Core Processor QPI Link 0 (rev 05)
	Subsystem: Intel Corporation Device 8086
	Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx-
	Status: Cap- 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
	Latency: 0

ff:02.1 Host bridge: Intel Corporation Core Processor QPI Physical 0 (rev 05)
	Subsystem: Intel Corporation Device 8086
	Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx-
	Status: Cap- 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
	Latency: 0

ff:02.2 Host bridge: Intel Corporation Core Processor Reserved (rev 05)
	Subsystem: Intel Corporation Device 8086
	Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx-
	Status: Cap- 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
	Latency: 0

ff:02.3 Host bridge: Intel Corporation Core Processor Reserved (rev 05)
	Subsystem: Intel Corporation Device 8086
	Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx-
	Status: Cap- 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
	Latency: 0

There now seems to be quite a few people all with this problem. All of them have Acer laptops so I guess the bug is related to a specific piece of hardware. See https://bbs.archlinux.org/viewtopic.php?id=107583 for details.

I would like to also add my Acer 1410 to the list. Sorry if I'm stating the obvious here.

Hi,

I do have exactly the same probleme with my Acer 1825ptz
Was ok but with 2.6.32 without touchscreen support.
With 2.6.36 touchscreen is working fine, but touchpad is sometime very slow, then faster, some lags, can be really used.
Workaround at the moment:
sudo modprobe -r psmouse
sudo modprobe psmouse proto=imps

my loaded modules:
~$ cat /proc/modules
psmouse 38325 0 - Live 0xfba18000
aes_i586 6828 1 - Live 0xf8417000
aes_generic 25766 1 aes_i586, Live 0xf8cdf000
acpi_cpufreq 4539 0 - Live 0xf82ef000
mperf 959 1 acpi_cpufreq, Live 0xf82e3000
cpufreq_conservative 6190 0 - Live 0xf82d8000
cpufreq_userspace 1500 0 - Live 0xf82cc000
cpufreq_powersave 614 0 - Live 0xf82c2000
cpufreq_stats 1934 0 - Live 0xf82b9000
parport_pc 15625 0 - Live 0xf82a6000
ppdev 4459 0 - Live 0xf8294000
lp 5798 0 - Live 0xf8023000
parport 21222 3 parport_pc,ppdev,lp, Live 0xf8041000
sco 5947 2 - Live 0xfa37a000
bridge 49128 0 - Live 0xfa35e000
stp 1020 1 bridge, Live 0xfa341000
bnep 7490 2 - Live 0xfa335000
rfcomm 24320 8 - Live 0xfa321000
l2cap 26406 16 bnep,rfcomm, Live 0xfa2ec000
crc16 1035 1 l2cap, Live 0xfa2d3000
binfmt_misc 4974 1 - Live 0xfa2ad000
uinput 5106 1 - Live 0xfa2a0000
fuse 47270 1 - Live 0xfa285000
ext2 45902 1 - Live 0xfa254000
loop 10184 0 - Live 0xf9fd0000
snd_hda_codec_intelhdmi 8315 1 - Live 0xf9f5d000
snd_hda_codec_realtek 177558 1 - Live 0xf9f24000
snd_hda_intel 16557 4 - Live 0xf9ec7000
btusb 7851 2 - Live 0xf9eb3000
bluetooth 37018 9 sco,bnep,rfcomm,l2cap,btusb, Live 0xf9e6c000
snd_hda_codec 55937 3 snd_hda_codec_intelhdmi,snd_hda_codec_realtek,snd_hda_intel, Live 0xf9df5000
snd_hwdep 4038 1 snd_hda_codec, Live 0xf9dd4000
hid_cando 2051 0 - Live 0xf9dc9000
usbhid 26580 0 - Live 0xf9db7000
hid 50479 2 hid_cando,usbhid, Live 0xf9d95000
arc4 1002 2 - Live 0xf9d79000
ecb 1413 2 - Live 0xf9d70000
option 12530 0 - Live 0xf98f3000
usb_wwan 6227 1 option, Live 0xf98c4000
snd_pcm_oss 27474 0 - Live 0xf98ac000
snd_mixer_oss 10359 1 snd_pcm_oss, Live 0xf9897000
joydev 7004 0 - Live 0xf95bd000
uvcvideo 45349 0 - Live 0xf9672000
iwlagn 94276 0 - Live 0xf9637000
videodev 45494 1 uvcvideo, Live 0xf9651000
snd_pcm 46944 4 snd_hda_intel,snd_hda_codec,snd_pcm_oss, Live 0xf916e000
v4l1_compat 10366 2 uvcvideo,videodev, Live 0xf9166000
snd_seq_midi 3602 0 - Live 0xf915a000
iwlcore 52895 1 iwlagn, Live 0xf8f33000
i915 234421 3 - Live 0xf8ecd000
mac80211 143631 2 iwlagn,iwlcore, Live 0xf8e47000
usbserial 20853 2 option,usb_wwan, Live 0xf8ddc000
drm_kms_helper 19053 1 i915, Live 0xf8dea000
snd_rawmidi 12629 1 snd_seq_midi, Live 0xf8dc5000
snd_seq_midi_event 3750 1 snd_seq_midi, Live 0xf8db5000
snd_seq 34688 2 snd_seq_midi,snd_seq_midi_event, Live 0xf8d9f000
drm 121429 3 i915,drm_kms_helper, Live 0xf8d41000
cfg80211 97931 3 iwlagn,iwlcore,mac80211, Live 0xf8d1c000
i2c_algo_bit 3373 1 i915, Live 0xf8cb9000
rfkill 10806 4 bluetooth,cfg80211, Live 0xf8cab000
snd_timer 12485 3 snd_pcm,snd_seq, Live 0xf8c98000
snd_seq_device 3659 3 snd_seq_midi,snd_rawmidi,snd_seq, Live 0xf8c89000
uhci_hcd 15706 0 - Live 0xf8c2e000
snd 34129 17 snd_hda_codec_realtek,snd_hda_intel,snd_hda_codec,snd_hwdep,snd_pcm_oss,snd_mixer_oss,snd_pcm,snd_rawmidi,snd_seq,snd_timer,snd_seq_device, Live 0xf8c0f000
ehci_hcd 27911 0 - Live 0xf8b4f000
video 15297 1 i915, Live 0xf8aa3000
soundcore 3426 1 snd, Live 0xf8afa000
atl1c 22994 0 - Live 0xf89f7000
processor 22779 3 acpi_cpufreq, Live 0xf8a6d000
wmi 6073 0 - Live 0xf8ab4000
usbcore 94858 9 btusb,usbhid,option,usb_wwan,uvcvideo,usbserial,uhci_hcd,ehci_hcd, Live 0xf898d000
nls_base 4521 1 usbcore, Live 0xf8750000
tpm_tis 5313 0 - Live 0xf8703000
i2c_i801 6346 0 - Live 0xf86ea000
i2c_core 12882 6 videodev,i915,drm_kms_helper,drm,i2c_algo_bit,i2c_i801, Live 0xf86d9000
snd_page_alloc 5041 2 snd_hda_intel,snd_pcm, Live 0xf86c8000
shpchp 18111 0 - Live 0xf8674000
button 3610 1 i915, Live 0xf8694000
pci_hotplug 16971 1 shpchp, Live 0xf8646000
tpm 7955 1 tpm_tis, Live 0xf8605000
tpm_bios 3573 1 tpm, Live 0xf85e6000
ac 1656 0 - Live 0xf85d6000
evdev 5563 17 - Live 0xf85c4000
battery 4122 0 - Live 0xf85b1000
pcspkr 1219 0 - Live 0xf85a6000
output 1212 1 video, Live 0xf859c000
serio_raw 2902 0 - Live 0xf8525000
ext3 92361 2 - Live 0xf84ff000
jbd 31860 1 ext3, Live 0xf84c9000
mbcache 3776 2 ext2,ext3, Live 0xf84b2000
dm_mod 49160 9 - Live 0xf841b000
sd_mod 24186 3 - Live 0xf83f7000
crc_t10dif 1020 1 sd_mod, Live 0xf83e4000
ahci 16601 2 - Live 0xf83d1000
libahci 13252 1 ahci, Live 0xf83bb000
libata 115480 2 ahci,libahci, Live 0xf8382000
thermal 9458 0 - Live 0xf8049000
scsi_mod 128064 2 sd_mod,libata, Live 0xf8055000
thermal_sys 9328 3 video,processor,thermal, Live 0xf8029000


$ lspci -vvv
00:00.0 Host bridge: Intel Corporation Mobile 4 Series Chipset Memory Controller Hub (rev 07)
	Subsystem: Acer Incorporated [ALI] Device 0300
	Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx-
	Status: Cap+ 66MHz- UDF- FastB2B+ ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort+ >SERR- <PERR- INTx-
	Latency: 0
	Capabilities: <access denied>
	Kernel driver in use: agpgart-intel

00:02.0 VGA compatible controller: Intel Corporation Mobile 4 Series Chipset Integrated Graphics Controller (rev 07) (prog-if 00 [VGA controller])
	Subsystem: Acer Incorporated [ALI] Device 0300
	Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx+
	Status: Cap+ 66MHz- UDF- FastB2B+ ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
	Latency: 0
	Interrupt: pin A routed to IRQ 41
	Region 0: Memory at 90000000 (64-bit, non-prefetchable) [size=4M]
	Region 2: Memory at 80000000 (64-bit, prefetchable) [size=256M]
	Region 4: I/O ports at 30f0 [size=8]
	Expansion ROM at <unassigned> [disabled]
	Capabilities: <access denied>
	Kernel driver in use: i915

00:02.1 Display controller: Intel Corporation Mobile 4 Series Chipset Integrated Graphics Controller (rev 07)
	Subsystem: Acer Incorporated [ALI] Device 0300
	Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx-
	Status: Cap+ 66MHz- UDF- FastB2B+ ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
	Latency: 0
	Region 0: Memory at 92400000 (64-bit, non-prefetchable) [size=1M]
	Capabilities: <access denied>

00:1a.0 USB Controller: Intel Corporation 82801I (ICH9 Family) USB UHCI Controller #4 (rev 03) (prog-if 00 [UHCI])
	Subsystem: Acer Incorporated [ALI] Device 0300
	Control: I/O+ Mem- BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx-
	Status: Cap+ 66MHz- UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
	Latency: 0
	Interrupt: pin A routed to IRQ 16
	Region 4: I/O ports at 30c0 [size=32]
	Capabilities: <access denied>
	Kernel driver in use: uhci_hcd

00:1a.1 USB Controller: Intel Corporation 82801I (ICH9 Family) USB UHCI Controller #5 (rev 03) (prog-if 00 [UHCI])
	Subsystem: Acer Incorporated [ALI] Device 0300
	Control: I/O+ Mem- BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx-
	Status: Cap+ 66MHz- UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
	Latency: 0
	Interrupt: pin B routed to IRQ 21
	Region 4: I/O ports at 30a0 [size=32]
	Capabilities: <access denied>
	Kernel driver in use: uhci_hcd

00:1a.7 USB Controller: Intel Corporation 82801I (ICH9 Family) USB2 EHCI Controller #2 (rev 03) (prog-if 20 [EHCI])
	Subsystem: Acer Incorporated [ALI] Device 0300
	Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx-
	Status: Cap+ 66MHz- UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
	Latency: 0
	Interrupt: pin D routed to IRQ 19
	Region 0: Memory at 94504c00 (32-bit, non-prefetchable) [size=1K]
	Capabilities: <access denied>
	Kernel driver in use: ehci_hcd

00:1b.0 Audio device: Intel Corporation 82801I (ICH9 Family) HD Audio Controller (rev 03)
	Subsystem: Acer Incorporated [ALI] Device 0300
	Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx+
	Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
	Latency: 0, Cache Line Size: 64 bytes
	Interrupt: pin A routed to IRQ 43
	Region 0: Memory at 94500000 (64-bit, non-prefetchable) [size=16K]
	Capabilities: <access denied>
	Kernel driver in use: HDA Intel

00:1c.0 PCI bridge: Intel Corporation 82801I (ICH9 Family) PCI Express Port 1 (rev 03) (prog-if 00 [Normal decode])
	Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx-
	Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
	Latency: 0, Cache Line Size: 64 bytes
	Bus: primary=00, secondary=01, subordinate=01, sec-latency=0
	I/O behind bridge: 00002000-00002fff
	Memory behind bridge: 93500000-944fffff
	Prefetchable memory behind bridge: 0000000090400000-00000000913fffff
	Secondary status: 66MHz- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- <SERR- <PERR-
	BridgeCtl: Parity- SERR- NoISA- VGA- MAbort- >Reset- FastB2B-
		PriDiscTmr- SecDiscTmr- DiscTmrStat- DiscTmrSERREn-
	Capabilities: <access denied>

00:1c.3 PCI bridge: Intel Corporation 82801I (ICH9 Family) PCI Express Port 4 (rev 03) (prog-if 00 [Normal decode])
	Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx-
	Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
	Latency: 0, Cache Line Size: 64 bytes
	Bus: primary=00, secondary=02, subordinate=02, sec-latency=0
	I/O behind bridge: 00001000-00001fff
	Memory behind bridge: 92500000-934fffff
	Prefetchable memory behind bridge: 0000000091400000-00000000923fffff
	Secondary status: 66MHz- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- <SERR- <PERR-
	BridgeCtl: Parity- SERR- NoISA- VGA- MAbort- >Reset- FastB2B-
		PriDiscTmr- SecDiscTmr- DiscTmrStat- DiscTmrSERREn-
	Capabilities: <access denied>

00:1d.0 USB Controller: Intel Corporation 82801I (ICH9 Family) USB UHCI Controller #1 (rev 03) (prog-if 00 [UHCI])
	Subsystem: Acer Incorporated [ALI] Device 0300
	Control: I/O+ Mem- BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx-
	Status: Cap+ 66MHz- UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
	Latency: 0
	Interrupt: pin A routed to IRQ 23
	Region 4: I/O ports at 3080 [size=32]
	Capabilities: <access denied>
	Kernel driver in use: uhci_hcd

00:1d.1 USB Controller: Intel Corporation 82801I (ICH9 Family) USB UHCI Controller #2 (rev 03) (prog-if 00 [UHCI])
	Subsystem: Acer Incorporated [ALI] Device 0300
	Control: I/O+ Mem- BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx-
	Status: Cap+ 66MHz- UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
	Latency: 0
	Interrupt: pin B routed to IRQ 19
	Region 4: I/O ports at 3060 [size=32]
	Capabilities: <access denied>
	Kernel driver in use: uhci_hcd

00:1d.2 USB Controller: Intel Corporation 82801I (ICH9 Family) USB UHCI Controller #3 (rev 03) (prog-if 00 [UHCI])
	Subsystem: Acer Incorporated [ALI] Device 0300
	Control: I/O+ Mem- BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx-
	Status: Cap+ 66MHz- UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
	Latency: 0
	Interrupt: pin D routed to IRQ 16
	Region 4: I/O ports at 3040 [size=32]
	Capabilities: <access denied>
	Kernel driver in use: uhci_hcd

00:1d.7 USB Controller: Intel Corporation 82801I (ICH9 Family) USB2 EHCI Controller #1 (rev 03) (prog-if 20 [EHCI])
	Subsystem: Acer Incorporated [ALI] Device 0300
	Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx-
	Status: Cap+ 66MHz- UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
	Latency: 0
	Interrupt: pin A routed to IRQ 23
	Region 0: Memory at 94504800 (32-bit, non-prefetchable) [size=1K]
	Capabilities: <access denied>
	Kernel driver in use: ehci_hcd

00:1e.0 PCI bridge: Intel Corporation 82801 Mobile PCI Bridge (rev 93) (prog-if 01 [Subtractive decode])
	Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx-
	Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
	Latency: 0
	Bus: primary=00, secondary=03, subordinate=03, sec-latency=32
	I/O behind bridge: 0000f000-00000fff
	Memory behind bridge: fff00000-000fffff
	Prefetchable memory behind bridge: 00000000fff00000-00000000000fffff
	Secondary status: 66MHz- FastB2B+ ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort+ <SERR- <PERR-
	BridgeCtl: Parity- SERR- NoISA- VGA- MAbort- >Reset- FastB2B-
		PriDiscTmr- SecDiscTmr- DiscTmrStat- DiscTmrSERREn-
	Capabilities: <access denied>

00:1f.0 ISA bridge: Intel Corporation ICH9M-E LPC Interface Controller (rev 03)
	Subsystem: Acer Incorporated [ALI] Device 0300
	Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx-
	Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
	Latency: 0
	Capabilities: <access denied>

00:1f.2 SATA controller: Intel Corporation ICH9M/M-E SATA AHCI Controller (rev 03) (prog-if 01 [AHCI 1.0])
	Subsystem: Acer Incorporated [ALI] Device 0300
	Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx+
	Status: Cap+ 66MHz+ UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
	Latency: 0
	Interrupt: pin B routed to IRQ 40
	Region 0: I/O ports at 30e8 [size=8]
	Region 1: I/O ports at 30fc [size=4]
	Region 2: I/O ports at 30e0 [size=8]
	Region 3: I/O ports at 30f8 [size=4]
	Region 4: I/O ports at 3020 [size=32]
	Region 5: Memory at 94504000 (32-bit, non-prefetchable) [size=2K]
	Capabilities: <access denied>
	Kernel driver in use: ahci

00:1f.3 SMBus: Intel Corporation 82801I (ICH9 Family) SMBus Controller (rev 03)
	Subsystem: Acer Incorporated [ALI] Device 0300
	Control: I/O+ Mem+ BusMaster- SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx-
	Status: Cap- 66MHz- UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
	Interrupt: pin C routed to IRQ 18
	Region 0: Memory at 94505000 (64-bit, non-prefetchable) [size=256]
	Region 4: I/O ports at 3000 [size=32]
	Kernel driver in use: i801_smbus

01:00.0 Ethernet controller: Atheros Communications AR8131 Gigabit Ethernet (rev c0)
	Subsystem: Acer Incorporated [ALI] Device 0300
	Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx+
	Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
	Latency: 0, Cache Line Size: 64 bytes
	Interrupt: pin A routed to IRQ 44
	Region 0: Memory at 93500000 (64-bit, non-prefetchable) [size=256K]
	Region 2: I/O ports at 2000 [size=128]
	Capabilities: <access denied>
	Kernel driver in use: atl1c

02:00.0 Network controller: Intel Corporation Centrino Wireless-N 1000
	Subsystem: Intel Corporation Centrino Wireless-N 1000 BGN
	Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx-
	Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
	Latency: 0, Cache Line Size: 64 bytes
	Interrupt: pin A routed to IRQ 42
	Region 0: Memory at 92500000 (64-bit, non-prefetchable) [size=8K]
	Capabilities: <access denied>
	Kernel driver in use: iwlagn


Hope it can help to understand what's going on.....

Rgds
Kevin

OK, so after a few messed up tries I have finally managed to pinpoint the line of code which introduces the bug, so thought that I'd share my findings.

My temporary workaround is to revert the line back to its previous version while I try to understand why the changed code is failing for our hardware. It appears to have worked with no side effects as I am currently typing this while booted into a custom 2.6.37-rc4 with my patch and a working touchpad.

The culprit is the linked patch: https://patchwork.kernel.org/patch/112613/

To fix the bug simply undo this patch, ie replace "input_set_abs_params(dev, ABS_TOOL_WIDTH, 0, 15, 0, 0);" with "__set_bit(ABS_TOOL_WIDTH, dev->absbit);" in "drivers/input/mouse/synaptics.c".

If the input devs could take a look at this I'd really appreciate it.

Thanks.

I am not sure why changing back to __set_bit() would fix anything as the only difference is that input_set_abs_params() also sets minimum and maximum values for the axis.

What userspace driver is being used (and what version)? Is it xf86-input-synaptics or something else? Also, what is the contents of /proc/bus/input/devices?

Thanks.

Hi Dmitry,

The userspace driver is xf86-input-synaptics 1.3.0-2.

Output of /proc/bus/input/devices is below:

cat /proc/bus/input/devices 
I: Bus=0011 Vendor=0001 Product=0001 Version=ab41
N: Name="AT Translated Set 2 keyboard"
P: Phys=isa0060/serio0/input0
S: Sysfs=/devices/platform/i8042/serio0/input/input0
U: Uniq=
H: Handlers=kbd event0 
B: EV=120013
B: KEY=10000 c020000000000 0 0 700f02000003 3803078f830f401 febfffdfffefffff fffffffffffffffe
B: MSC=10
B: LED=7

I: Bus=0010 Vendor=001f Product=0001 Version=0100
N: Name="PC Speaker"
P: Phys=isa0061/input0
S: Sysfs=/devices/platform/pcspkr/input/input1
U: Uniq=
H: Handlers=kbd event1 
B: EV=40001
B: SND=6

I: Bus=0019 Vendor=0000 Product=0001 Version=0000
N: Name="Power Button"
P: Phys=PNP0C0C/button/input0
S: Sysfs=/devices/LNXSYSTM:00/device:00/PNP0C0C:00/input/input2
U: Uniq=
H: Handlers=kbd event2 
B: EV=3
B: KEY=10000000000000 0

I: Bus=0019 Vendor=0000 Product=0005 Version=0000
N: Name="Lid Switch"
P: Phys=PNP0C0D/button/input0
S: Sysfs=/devices/LNXSYSTM:00/device:00/PNP0C0D:00/input/input3
U: Uniq=
H: Handlers=event3 
B: EV=21
B: SW=1

I: Bus=0019 Vendor=0000 Product=0003 Version=0000
N: Name="Sleep Button"
P: Phys=PNP0C0E/button/input0
S: Sysfs=/devices/LNXSYSTM:00/device:00/PNP0C0E:00/input/input4
U: Uniq=
H: Handlers=kbd event4 
B: EV=3
B: KEY=4000 0 0

I: Bus=0019 Vendor=0000 Product=0001 Version=0000
N: Name="Power Button"
P: Phys=LNXPWRBN/button/input0
S: Sysfs=/devices/LNXSYSTM:00/LNXPWRBN:00/input/input5
U: Uniq=
H: Handlers=kbd event5 
B: EV=3
B: KEY=10000000000000 0

I: Bus=0011 Vendor=0002 Product=0007 Version=01b1
N: Name="SynPS/2 Synaptics TouchPad"
P: Phys=isa0060/serio2/input0
S: Sysfs=/devices/platform/i8042/serio2/input/input6
U: Uniq=
H: Handlers=mouse0 event6 
B: EV=b
B: KEY=420 30000 0 0 0 0
B: ABS=11000003

I: Bus=0003 Vendor=04f2 Product=b19d Version=7858
N: Name="Webcam"
P: Phys=usb-0000:00:1a.7-2/button
S: Sysfs=/devices/pci0000:00/0000:00:1a.7/usb1/1-2/1-2:1.0/input/input7
U: Uniq=
H: Handlers=kbd event7 
B: EV=3
B: KEY=100000 0 0 0

I: Bus=0003 Vendor=062a Product=7100 Version=0100
N: Name="MosArt, Inc. RMTP-MA957"
P: Phys=usb-0000:00:1a.1-1/input0
S: Sysfs=/devices/pci0000:00/0000:00:1a.1/usb4/4-1/4-1:1.0/input/input8
U: Uniq=
H: Handlers=mouse1 event8 
B: EV=1b
B: KEY=403 3 0 0 0 0
B: ABS=7000100000f
B: MSC=10

I: Bus=0003 Vendor=062a Product=7100 Version=0100
N: Name="MosArt, Inc. RMTP-MA957"
P: Phys=usb-0000:00:1a.1-1/input0
S: Sysfs=/devices/pci0000:00/0000:00:1a.1/usb4/4-1/4-1:1.0/input/input9
U: Uniq=
H: Handlers=mouse2 event9 js0 
B: EV=1b
B: KEY=30000 0 0 0 0
B: ABS=3
B: MSC=10

I: Bus=0003 Vendor=062a Product=7100 Version=0100
N: Name="MosArt, Inc. RMTP-MA957"
P: Phys=usb-0000:00:1a.1-1/input0
S: Sysfs=/devices/pci0000:00/0000:00:1a.1/usb4/4-1/4-1:1.0/input/input10
U: Uniq=
H: Handlers=event10 
B: EV=9
B: ABS=ffffff0000000000

I: Bus=0003 Vendor=045e Product=0040 Version=0110
N: Name="Microsoft Microsoft 3-Button Mouse with IntelliEye(TM)"
P: Phys=usb-0000:00:1d.0-1/input0
S: Sysfs=/devices/pci0000:00/0000:00:1d.0/usb5/5-1/5-1:1.0/input/input11
U: Uniq=
H: Handlers=mouse3 event11 
B: EV=17
B: KEY=70000 0 0 0 0
B: REL=103
B: MSC=10

I: Bus=0019 Vendor=0000 Product=0006 Version=0000
N: Name="Video Bus"
P: Phys=LNXVIDEO/video/input0
S: Sysfs=/devices/LNXSYSTM:00/device:00/PNP0A08:00/LNXVIDEO:00/input/input12
U: Uniq=
H: Handlers=kbd event12 
B: EV=3
B: KEY=3e000b00000000 0 0 0

I: Bus=0001 Vendor=10ec Product=0269 Version=0001
N: Name="HDA Digital PCBeep"
P: Phys=card0/codec#0/beep0
S: Sysfs=/devices/pci0000:00/0000:00:1b.0/input/input13
U: Uniq=
H: Handlers=kbd event13 
B: EV=40001
B: SND=6

I: Bus=0000 Vendor=0000 Product=0000 Version=0000
N: Name="HDA Intel Mic"
P: Phys=ALSA
S: Sysfs=/devices/pci0000:00/0000:00:1b.0/sound/card0/input14
U: Uniq=
H: Handlers=event14 
B: EV=21
B: SW=10

I: Bus=0000 Vendor=0000 Product=0000 Version=0000
N: Name="HDA Intel Headphone"
P: Phys=ALSA
S: Sysfs=/devices/pci0000:00/0000:00:1b.0/sound/card0/input15
U: Uniq=
H: Handlers=event15 
B: EV=21
B: SW=4

I'm also not sure why it would fix it. I have been looking at the code for the last 30 mins and I can't really see many differences, although I am new to this kind of development so I'm not exactly the best person to ask.

Hope this helps, and thanks for looking at it.

Oh, and just to avoid confusion, the Microsoft 3 button mouse is a temporary external mouse that I was using while the touchpad was unusable. I just happened to have it plugged in while running cat.

Hi,

Dmitry Torokhov, you said: 

I am not sure why changing back to __set_bit() would fix anything as the only
difference is that input_set_abs_params() also sets minimum and maximum values
for the axis.


But it may be related anyway to that because, in my xorg.log, here is what i have with 2.6.36 kernel (and I don't have those ranges issue with a 2.6.32 kernel):


[    20.789] (II) config/udev: Adding input device SynPS/2 Synaptics TouchPad (/dev/input/event6)
[    20.789] (**) SynPS/2 Synaptics TouchPad: Applying InputClass "evdev touchpad catchall"
[    20.789] (**) SynPS/2 Synaptics TouchPad: Applying InputClass "touchpad catchall"
[    20.789] (II) Synaptics touchpad driver version 1.3.0
[    20.789] (**) Option "Device" "/dev/input/event6"
[    20.789] (--) SynPS/2 Synaptics TouchPad: invalid x-axis range.  defaulting to 1615 - 5685
[    20.789] (--) SynPS/2 Synaptics TouchPad: invalid y-axis range.  defaulting to 1729 - 4171
[    20.789] (--) SynPS/2 Synaptics TouchPad: invalid pressure range.  defaulting to 0 - 256
[    20.789] (--) SynPS/2 Synaptics TouchPad: invalid finger width range.  defaulting to 0 - 16
[    20.789] (--) SynPS/2 Synaptics TouchPad: no supported touchpad found
[    20.789] (EE) SynPS/2 Synaptics TouchPad Unable to query/initialize Synaptics hardware.
[    20.789] (EE) PreInit failed for input device "SynPS/2 Synaptics TouchPad"
[    20.789] (II) UnloadModule: "synaptics"


It looks like it is on the good track!
If it is related to the ranges, maybe it is possible to have a workaround without rebuiling the kernel. I will try to have a look this night.

(In reply to comment #10)

Note that the change referenced by James only changes ABS_TOOL_WIDTH whereas your Xorg.log shows that userspace fails to fetch range data for _any_ of the axes:

> [    20.789] (--) SynPS/2 Synaptics TouchPad: invalid x-axis range. 
> defaulting
> to 1615 - 5685
> [    20.789] (--) SynPS/2 Synaptics TouchPad: invalid y-axis range. 
> defaulting
> to 1729 - 4171
> [    20.789] (--) SynPS/2 Synaptics TouchPad: invalid pressure range. 
> defaulting to 0 - 256
> [    20.789] (--) SynPS/2 Synaptics TouchPad: invalid finger width range. 
> defaulting to 0 - 16

Is it 64 or 32 bit kernel? What about userspace? Also, the version of synaptics driver I am running here is 1.2.2, could you try downgrading it?

Thanks.

I just took a look at the difference between output of xinput --list-props "SynPS/2 Synaptics TouchPad" on a (older) distro where the touchpad works and one where it doesn't.

After poking at various things for a while I found that xinput --set-prop "SynPS/2 Synaptics TouchPad" "Synaptics Two-Finger Pressure" 280 (as it was set to in the working distro) made movement much better. In my Arch Linux installation it was set to 29. There may be more differences worth taking a look at, I just wanted to post the fix that made my touchpad usable. Also, I have no idea what made this change; is the change in the driver code a likely culprit?

(In reply to comment #11)
> (In reply to comment #10)
> 
> Note that the change referenced by James only changes ABS_TOOL_WIDTH whereas
> your Xorg.log shows that userspace fails to fetch range data for _any_ of the
> axes:
> 
> > [    20.789] (--) SynPS/2 Synaptics TouchPad: invalid x-axis range. 
> defaulting
> > to 1615 - 5685
> > [    20.789] (--) SynPS/2 Synaptics TouchPad: invalid y-axis range. 
> defaulting
> > to 1729 - 4171
> > [    20.789] (--) SynPS/2 Synaptics TouchPad: invalid pressure range. 
> > defaulting to 0 - 256
> > [    20.789] (--) SynPS/2 Synaptics TouchPad: invalid finger width range. 
> > defaulting to 0 - 16
> 
> Is it 64 or 32 bit kernel? What about userspace? Also, the version of
> synaptics
> driver I am running here is 1.2.2, could you try downgrading it?
> 
> Thanks.


I am using a 64 bit kernel. I've also just tried downgrading to synaptics 1.2.2 and I ended up with a completely unusable touchpad. Touching it and moving my finger on it had no effect on my mouse cursor at all, not even the erratic behaviour that I usually get with 1.3.0.

I also just tried:

xinput --set-prop "SynPS/2 Synaptics TouchPad" "Synaptics Two-Finger Pressure" 280

as suggested by dptkby@gmail.com, and it also fixed my problems. Maybe it is something to do with the default finger widths not being set correctly.

I'm using a 64bit kernel and xserver-xorg-input-synaptics-1.3.0-1.
I tried to downgrade to 1.2.2-2 , but I have also completly lost my touchpad. And now going back to 1.3.0-1, still doesn't want to work. Don't know what to do to get back (at least) the erratic behaviour.

(In reply to comment #14)
> I'm using a 64bit kernel and xserver-xorg-input-synaptics-1.3.0-1.
> I tried to downgrade to 1.2.2-2 , but I have also completly lost my touchpad.
> And now going back to 1.3.0-1, still doesn't want to work. Don't know what to
> do to get back (at least) the erratic behaviour.

I found that my mouse wouldn't respond until I'd restarted the laptop, you might want to try that.

Hi,
My touchpad gets back. What a shame! My laptop is new and I didn't know but I have a hard Fn Key that enable or disable the touchpad. Worst thing, even after a reboot, touchpad remains disable. During my last test, I tried this Fn Key.
So now, everything OK and :
xinput --set-prop "SynPS/2 Synaptics TouchPad" "Synaptics Two-Finger Pressure"
280
works also well for me.

No big surprise, the same problem on my Acer 1810TZ.

(In reply to comment #6)
> OK, so after a few messed up tries I have finally managed to pinpoint the
> line
> of code which introduces the bug, so thought that I'd share my findings.
> 
> My temporary workaround is to revert the line back to its previous version
> while I try to understand why the changed code is failing for our hardware.
> It
> appears to have worked with no side effects as I am currently typing this
> while
> booted into a custom 2.6.37-rc4 with my patch and a working touchpad.
> 
> The culprit is the linked patch: https://patchwork.kernel.org/patch/112613/
> 
> To fix the bug simply undo this patch, ie replace "input_set_abs_params(dev,
> ABS_TOOL_WIDTH, 0, 15, 0, 0);" with "__set_bit(ABS_TOOL_WIDTH, dev->absbit);"
> in "drivers/input/mouse/synaptics.c".
> 
> If the input devs could take a look at this I'd really appreciate it.
> 
> Thanks.

James, did you by chance email Chis Bagwell (the change approver) to get this thoughts?

https://patchwork.kernel.org/patch/112613/

Pinging him might bring some visibility to this bug.

Thanks
Andy

It looks people having issues are using a combination of 2.6.36 and xf86-input-synaptics-1.3.0 which also contains changes I made in this area.

I'm not exactly sure of the problem yet but the kernel patch reverted will affect this area of xf86-input-synaptics:

    range = priv->maxw - priv->minw;

    /* scaling based on defaults below and a tool width of 16 */
    palmMinWidth = priv->minw + range * (10.0/16);
    emulateTwoFingerMinW = priv->minw + range * (7.0/16);

With 2.6.36, minw=0/maxw=15.  Reverting patch makes minw=0/maxw=0 which then makes xf86-input-synaptics declare invalid range and change to minw=0/maxw=16.  So at best, the difference is a rounding down to palmMinWidth=9 and emulateTwoFingerMinW=6 when using 2.6.36 (instead of 10 and 7).

There is also a new piece of code in xf86-input-synaptics-1.3.0 which I suspect its related to issue:

    range = priv->maxp - priv->minp;
    fingerHigh = priv->minp + range * (30.0/256);
    /* Enable emulation when hw supports both pressure and width. */
    if (!priv->has_double && priv->has_width)
        emulateTwoFingerMinZ = fingerHigh;
    else
        emulateTwoFingerMinZ = priv->minp + range * (282.0/256);


I added the if() statement and so not long ago these laptops were defaulting to EmulateTwoFingerMinZ close to 282 and now its closer to 30.  Value of 282 effectively disables 2-finger emulation.  

I believe this reort mentioned disabling 2-finger emulation (setting back to 282) resolves issues.  The right-clicks are surely from 2-finger tap gesture.  Jumps are probably cause by entering and existing 2-finger emulation constantly and xf86-input-synaptics seeing large built up deltas.

Can someone help me see what ABS_TOOL_WIDTH and ABS_PRESSURE values are being reported during these time periods?  And also what are the values of the Emulate2FingerMinW Emualte2FingerMinZ's when using both 2.6.32 and 2.6.37?

We are probably just a rounding error away from working (making +1 to EmulateTwoFingerMinW).

Chris, how do you output these variables?  

Thanks

They will be contained in output of command:

xinput list-props "SynPS/2 Synaptics TouchPad"

For example:

	Synaptics Two-Finger Pressure (265):	280
	Synaptics Two-Finger Width (266):	6

Also of interest to me is this line:

	Synaptics Capabilities (290):	1, 0, 1, 1, 1, 1, 1

or output of synclient command:

    EmulateTwoFingerMinZ    = 280
    EmulateTwoFingerMinW    = 6

Note: I'm running a version of synaptics kernel driver that enables a semi-multi-touch mode which causes 2-finger reports to start working and why my above has value of 280.

These patches may be in kernel 2.6.38 which is another solution to this issue.

Thanks!  This is from:

Linux ace 2.6.37-1.fc15.x86_64 #1 SMP Wed Jan 5 02:54:28 UTC 2011 x86_64 x86_64 x86_64 GNU/Linux

With/during the funny acting trackpad.


Synaptics Two-Finger Pressure (271):	29
Synaptics Two-Finger Width (272):	6
Synaptics Capabilities (296):	1, 0, 1, 0, 0, 1, 1


EmulateTwoFingerMinZ    = 29
EmulateTwoFingerMinW    = 6

Andy

OK, can you see if we are on a border line of values by using this:

xinput set-prop "SynPS/2 Synaptics TouchPad" "Synaptics Two-Finger Width" 7

And if that doesn't work:

xinput set-prop "SynPS/2 Synaptics TouchPad" "Synaptics Two-Finger Pressure" 30

If that doesn't work then we need to resort to a tool like "evtest" and find exactly what values your hardware are sending out of pressure and width that is more sensitive then other laptops.

Chris,

xinput set-prop "SynPS/2 Synaptics TouchPad" "Synaptics Two-Finger Width" 7

Appears to fix the issue on my Acer!

Andy

This seems to be fixed for me in 2.6.38.x
I have an Acer 1810TZ if that would feel relevant

Two things have happened recently in this area and both will resolve issue for you.

1) 2.6.38.x kernels include support for "semi-mt" mode on synaptics hardware.  Ignore the multi-touch part, it means that your hardware is now correctly reporting finger touch counts which disables the code in comment #19 above.

2) Part of patch in xf86-input-synaptics from comment #19 recently got reverted to prevent these issues and because "semi-mt" is better option for majority of people.

So I think this bug report can be closed for both reasons (not kernel bug and newer kernel behaves different on this hardware type anyways).

As it seems the latest kernel fixes the issue and I'm not having any problems with it any more, I'll mark this bug as closed now. Thanks to all who helped.