With kernel 2.6.32, my touchpad which uses the synaptics driver doesn't work. I get these messages in dmesg: [ 69.125135] psmouse.c: TouchPad at isa0060/serio4/input0 lost synchronization, throwing 1 bytes away. [ 69.634740] psmouse.c: resync failed, issuing reconnect request The problem already occurs in 2.6.32-rc1. With kernel 2.6.31, it works correctly. I have tried several git-bisect runs but until now, I didn't find anything really conclusive. Thanks for your help.
After a new git bisect run, it appears that the first bad commit is the following: commit 2a84cb9852f52c0cd1c48bca41a8792d44ad06cc Author: Alexey Starikovskiy <astarikovskiy@suse.de> Date: Sun Aug 30 03:06:14 2009 +0400 ACPI: EC: Merge IRQ and POLL modes I have tried to revert it to confirm that it was the correct commit but it's not possible to do so.
Does nobody has any idea on this very annoying problem ?
This bug has been opened around 2 weeks ago and I didn't get any help on this. Does somebody really looks at this one ?
What machine do you have?
My computer is an ACER Travelmate 4001 with an Intel Centrino. Here is the output of lspci: 00:00.0 Host bridge: Intel Corporation 82852/82855 GM/GME/PM/GMV Processor to I/O Controller (rev 02) 00:00.1 System peripheral: Intel Corporation 82852/82855 GM/GME/PM/GMV Processor to I/O Controller (rev 02) 00:00.3 System peripheral: Intel Corporation 82852/82855 GM/GME/PM/GMV Processor to I/O Controller (rev 02) 00:01.0 PCI bridge: Intel Corporation 82852/82855 GM/GME/PM/GMV Processor to AGP Controller (rev 02) 00:1d.0 USB Controller: Intel Corporation 82801DB/DBL/DBM (ICH4/ICH4-L/ICH4-M) USB UHCI Controller #1 (rev 03) 00:1d.1 USB Controller: Intel Corporation 82801DB/DBL/DBM (ICH4/ICH4-L/ICH4-M) USB UHCI Controller #2 (rev 03) 00:1d.2 USB Controller: Intel Corporation 82801DB/DBL/DBM (ICH4/ICH4-L/ICH4-M) USB UHCI Controller #3 (rev 03) 00:1d.7 USB Controller: Intel Corporation 82801DB/DBM (ICH4/ICH4-M) USB2 EHCI Controller (rev 03) 00:1e.0 PCI bridge: Intel Corporation 82801 Mobile PCI Bridge (rev 83) 00:1f.0 ISA bridge: Intel Corporation 82801DBM (ICH4-M) LPC Interface Bridge (rev 03) 00:1f.1 IDE interface: Intel Corporation 82801DBM (ICH4-M) IDE Controller (rev 03) 00:1f.3 SMBus: Intel Corporation 82801DB/DBL/DBM (ICH4/ICH4-L/ICH4-M) SMBus Controller (rev 03) 00:1f.5 Multimedia audio controller: Intel Corporation 82801DB/DBL/DBM (ICH4/ICH4-L/ICH4-M) AC'97 Audio Controller (rev 03) 00:1f.6 Modem: Intel Corporation 82801DB/DBL/DBM (ICH4/ICH4-L/ICH4-M) AC'97 Modem Controller (rev 03) 01:00.0 VGA compatible controller: ATI Technologies Inc RV350 [Mobility Radeon 9600 M10] 02:02.0 Ethernet controller: Broadcom Corporation BCM4401 100Base-T (rev 01) 02:04.0 Network controller: Intel Corporation PRO/Wireless 2200BG Network Connection (rev 05) 02:06.0 CardBus bridge: Texas Instruments PCIxx21/x515 Cardbus Controller 02:06.2 FireWire (IEEE 1394): Texas Instruments OHCI Compliant IEEE 1394 Host Controller 02:06.3 Mass storage controller: Texas Instruments PCIxx21 Integrated FlashMedia Controller
Created attachment 24226 [details] output of dmesg with kernel 2.6.32 I also send the result of dmesg in case you need it.
Could you please check if the last patch from bug #14446 helps?
Created attachment 24228 [details] Put back udelay at transaction start Please check one more patch.
Created attachment 24229 [details] output of dmesg with kernel 2.6.32 and additional patches Unfortunately, the 2 patches you proposed don't solve the problem. It seems the touchpad is now detected: [ 12.261028] Synaptics claims to have extended capabilities, but I'm not able to read them. [ 12.824962] Synaptics Touchpad, model: 1, fw: 5.9, id: 0x126eb1, caps: 0xa04713/0x0 [ 12.866729] input: SynPS/2 Synaptics TouchPad as /devices/platform/i8042/serio4/input/input4 Furthermore, the synchronisation problem still occurs: [ 58.427180] psmouse.c: TouchPad at isa0060/serio4/input0 lost synchronization, throwing 1 bytes away. [ 58.941246] psmouse.c: resync failed, issuing reconnect request
Could you please uncomment "#define DEBUG" at the beginning of drivers/acpi/ec.c and attach dmesg?
Created attachment 24291 [details] dmesg with debugging enabled in ec.c So here is the dmesg output you asked for.
Could you please check if last patch from this bug reports helps: http://bugzilla.kernel.org/show_bug.cgi?id=14858
Created attachment 24297 [details] dmesg with debugging enabled in ec.c and patch from bug #14858 Unfortunately, this last patch doesn't solve the problem. In case you need it, I have attached a new dmesg output.
Could you please post acpidump output?
Created attachment 24299 [details] accelerate query execution #2 please check if this patch is any better than #14858
Created attachment 24304 [details] output of acpidump This last patch doesn't solve the problem too. As you have asked, I also send the output of acpidump.
Could you please also attach dmesg with the last patch applied?
Created attachment 24306 [details] dmesg with debugging enabled in ec.c So here is the dmesg output with debugging enabled in ec.c. Do you also want a "normal" dmesg ?
Are you sure that this dmesg is from kernel with patch from comment #15 applied? It looks more like plain 2.6.32 with DEBUG enabled...
Created attachment 24307 [details] dmesg with debugging enabled in ec.c I indeed attached the wrong file. This new output is the correct dmesg output with the last patch applied.
Created attachment 24309 [details] accelerate query execution #3 please check one more patch. please post a dmesg with debug enabled.
Created attachment 24310 [details] accelerate query execution #4 broken patch
Created attachment 24311 [details] dmesg with debugging enabled in ec.c and patch from comment #22 The problem still occurs with this last patch. Furthermore, are the 2 first patches (fix msi detection and put back udelay) still needed ?
Created attachment 24317 [details] add some sleep please add this on top of #4
It finally works with the latest patch from comment #24. It's even still working if I revert the patch which puts back udelay (from comment #8). Thanks a lot for your help.
Handled-By : Alexey Starikovskiy <astarikovskiy@suse.de> Patch : http://bugzilla.kernel.org/attachment.cgi?id=24317
patch in comment #24 is in acpi-test tree
Thanks, but the patch in comment #22 is also needed.
I have checked and it seems that you in fact took the patch from comment #22, but the patch from comment #24 is also needed to make my touchpad work.
The patch from comment #22 commit a62e8f1978f49e52f87a711ff6711b323d4b12ff Author: Alexey Starikovskiy <astarikovskiy@suse.de> Date: Thu Dec 24 11:34:16 2009 +0300 ACPI: EC: Accelerate query execution and the patch from comment #24 commit 54070101f86ca9a6e9ba243c999d144721ec3db7 Author: Alexey Starikovskiy <astarikovskiy@suse.de> Date: Wed Dec 30 15:53:10 2009 +0300 ACPI: EC: Add wait for irq storm both shipped in Linux-2.6.33-rc5 closed