I know at it is not a mainline or mm kernel, but Sergio Montero on linux-acpi@vger.kernel.org asked me to fill a bug repport. Most recent kernel where this bug did *NOT* occur: hard to say. The problem is at my older kernels didn't use ACPI, but since rt patch 2.6.18-rt6, I need ACPI to get the pm_timer as provided by ACPI to use as clock source. I get strange things with this hardware for a long time ago. With a stock agnula kernel (2.6.14-1-multimedia-386), 2 modules was loaded at boot time for my chipset: the SIS5513 correct one and a VIA82C if I remember well. (It was a via module in any case) This kernel was hanging very often and the only cure was to do my own kernel without the via module.I didn't get this problem with the preceding agnula version with kernel 2.6.12-1-multimedia-386 I also get an error in dmesg with the ACPI_BUTTON and BLK_DEV_GENERIC=yes. BLK_DEV_5513 was a module (kernel-2.6.20-rt8). I removed BLK_DEV_GENERIC and put BLK_DEV_5513 inside the kernel and I don't get this error anymore. Distribution: gentoo 2006.1 Linux version 2.6.20-rt8 (root@localhost) (gcc version 4.1.1 (Gentoo 4.1.1-r3)) #1 SMP PREEMPT Fri Mar 30 23:15:59 CEST 2007 Hardware Environment: # cat /proc/cpuinfo processor : 0 vendor_id : GenuineIntel cpu family : 15 model : 2 model name : Intel(R) Pentium(R) 4 CPU 2.40GHz stepping : 7 cpu MHz : 2400.154 cache size : 512 KB fdiv_bug : no hlt_bug : no f00f_bug : no coma_bug : no fpu : yes fpu_exception : yes cpuid level : 2 wp : yes flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe cid xtpr bogomips : 4802.05 clflush size : 64 lspci -vvv: 00:00.0 Host bridge: Silicon Integrated Systems [SiS] 645xx (rev 02) Subsystem: ASUSTeK Computer Inc. Unknown device 8086 Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort+ >SERR- <PERR- Latency: 32 Region 0: Memory at e8000000 (32-bit, non-prefetchable) [size=64M] Capabilities: [c0] AGP version 2.0 Status: RQ=32 Iso- ArqSz=0 Cal=0 SBA+ ITACoh- GART64- HTrans- 64bit- FW+ AGP3- Rate=x1,x2,x4 Command: RQ=1 ArqSz=0 Cal=0 SBA- AGP- GART64- 64bit- FW- Rate=<none> 00:01.0 PCI bridge: Silicon Integrated Systems [SiS] Virtual PCI-to-PCI bridge (AGP) (prog-if 00 [Normal decode]) Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- Status: Cap- 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- >SERR- <PERR- Latency: 64 Bus: primary=00, secondary=01, subordinate=01, sec-latency=0 I/O behind bridge: 0000f000-00000fff Memory behind bridge: e7000000-e7ffffff Prefetchable memory behind bridge: ef700000-febfffff Secondary status: 66MHz- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort+ <SERR- <PERR- BridgeCtl: Parity- SERR- NoISA- VGA+ MAbort- >Reset- FastB2B- 00:02.0 ISA bridge: Silicon Integrated Systems [SiS] SiS963 [MuTIOL Media IO] (rev 04) Control: I/O+ Mem+ BusMaster+ SpecCycle+ MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- Status: Cap- 66MHz- UDF- FastB2B- ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort- >SERR- <PERR- Latency: 0 00:02.1 SMBus: Silicon Integrated Systems [SiS] SiS961/2 SMBus Controller Control: I/O+ Mem- BusMaster- SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- Status: Cap- 66MHz- UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort- >SERR- <PERR- Interrupt: pin B routed to IRQ 0 Region 4: I/O ports at e600 [size=32] 00:02.5 IDE interface: Silicon Integrated Systems [SiS] 5513 [IDE] (prog-if 80 [Master]) Subsystem: ASUSTeK Computer Inc. Unknown device 8087 Control: I/O+ Mem- BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- Status: Cap- 66MHz- UDF- FastB2B- ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort- >SERR- <PERR- Latency: 128 Interrupt: pin ? routed to IRQ 16 Region 0: [virtual] Memory at 000001f0 (32-bit, non-prefetchable) [disabled] [size=8] Region 1: [virtual] Memory at 000003f0 (type 3, non-prefetchable) [disabled] [size=1] Region 2: [virtual] Memory at 00000170 (32-bit, non-prefetchable) [disabled] [size=8] Region 3: [virtual] Memory at 00000370 (type 3, non-prefetchable) [disabled] [size=1] Region 4: I/O ports at b400 [size=16] 00:02.7 Multimedia audio controller: Silicon Integrated Systems [SiS] AC'97 Sound Controller (rev a0) Subsystem: ASUSTeK Computer Inc. Unknown device 8096 Control: I/O+ Mem- BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- Status: Cap+ 66MHz- UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort- >SERR- <PERR- Latency: 32 (13000ns min, 2750ns max) Interrupt: pin C routed to IRQ 5 Region 0: I/O ports at a400 [size=256] Region 1: I/O ports at a000 [size=128] Capabilities: [48] Power Management version 2 Flags: PMEClk- DSI- D1+ D2+ AuxCurrent=55mA PME(D0-,D1-,D2-,D3hot+,D3cold+) Status: D0 PME-Enable- DSel=0 DScale=0 PME- 00:03.0 USB Controller: Silicon Integrated Systems [SiS] USB 1.0 Controller (rev 0f) (prog-if 10 [OHCI]) Subsystem: ASUSTeK Computer Inc. Unknown device 8087 Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV+ VGASnoop- ParErr- Stepping- SERR- FastB2B- Status: Cap- 66MHz- UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort- >SERR- <PERR- Latency: 32 (20000ns max), Cache Line Size: 32 bytes Interrupt: pin A routed to IRQ 20 Region 0: Memory at e6800000 (32-bit, non-prefetchable) [size=4K] 00:03.1 USB Controller: Silicon Integrated Systems [SiS] USB 1.0 Controller (rev 0f) (prog-if 10 [OHCI]) Subsystem: ASUSTeK Computer Inc. Unknown device 8087 Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV+ VGASnoop- ParErr- Stepping- SERR- FastB2B- Status: Cap- 66MHz- UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort- >SERR- <PERR- Latency: 32 (20000ns max), Cache Line Size: 32 bytes Interrupt: pin B routed to IRQ 17 Region 0: Memory at e6000000 (32-bit, non-prefetchable) [size=4K] 00:03.2 USB Controller: Silicon Integrated Systems [SiS] USB 1.0 Controller (rev 0f) (prog-if 10 [OHCI]) Subsystem: ASUSTeK Computer Inc. Unknown device 8087 Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV+ VGASnoop- ParErr- Stepping- SERR- FastB2B- Status: Cap- 66MHz- UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort- >SERR- <PERR- Latency: 32 (20000ns max), Cache Line Size: 32 bytes Interrupt: pin C routed to IRQ 18 Region 0: Memory at e5800000 (32-bit, non-prefetchable) [size=4K] 00:03.3 USB Controller: Silicon Integrated Systems [SiS] USB 2.0 Controller (prog-if 20 [EHCI]) Subsystem: ASUSTeK Computer Inc. Unknown device 8087 Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- Status: Cap+ 66MHz- UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort- >SERR- <PERR- Latency: 32 (20000ns max) Interrupt: pin D routed to IRQ 21 Region 0: Memory at e5000000 (32-bit, non-prefetchable) [size=4K] Capabilities: [50] Power Management version 2 Flags: PMEClk- DSI- D1- D2- AuxCurrent=375mA PME(D0+,D1-,D2-,D3hot+,D3cold+) Status: D0 PME-Enable- DSel=0 DScale=0 PME- 00:04.0 Ethernet controller: Silicon Integrated Systems [SiS] SiS900 PCI Fast Ethernet (rev 91) Subsystem: ASUSTeK Computer Inc. Unknown device 80a7 Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- Status: Cap+ 66MHz- UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort- >SERR- <PERR- Latency: 32 (13000ns min, 2750ns max) Interrupt: pin A routed to IRQ 19 Region 0: I/O ports at 9800 [size=256] Region 1: Memory at e4800000 (32-bit, non-prefetchable) [size=4K] Expansion ROM at ef6e0000 [disabled] [size=128K] Capabilities: [40] Power Management version 2 Flags: PMEClk- DSI- D1+ D2+ AuxCurrent=0mA PME(D0+,D1+,D2+,D3hot+,D3cold+) Status: D0 PME-Enable- DSel=0 DScale=0 PME- 00:0a.0 Multimedia audio controller: Creative Labs SB Audigy (rev 04) Subsystem: Creative Labs SB0240 Audigy 2 Platinum 6.1 Control: I/O+ Mem- BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- Status: Cap+ 66MHz- UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort- >SERR- <PERR- Latency: 32 (500ns min, 5000ns max) Interrupt: pin A routed to IRQ 23 Region 0: I/O ports at 9400 [size=64] Capabilities: [dc] Power Management version 2 Flags: PMEClk- DSI+ D1+ D2+ AuxCurrent=0mA PME(D0-,D1-,D2-,D3hot-,D3cold-) Status: D0 PME-Enable- DSel=0 DScale=0 PME- 00:0a.1 Input device controller: Creative Labs SB Audigy Game Port (rev 04) Subsystem: Creative Labs SB Audigy MIDI/Game Port Control: I/O+ Mem- BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- Status: Cap+ 66MHz- UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort- >SERR- <PERR- Latency: 32 Region 0: I/O ports at 9000 [size=8] Capabilities: [dc] Power Management version 2 Flags: PMEClk- DSI+ D1+ D2+ AuxCurrent=0mA PME(D0-,D1-,D2-,D3hot-,D3cold-) Status: D0 PME-Enable- DSel=0 DScale=0 PME- 00:0a.2 FireWire (IEEE 1394): Creative Labs SB Audigy FireWire Port (rev 04) (prog-if 10 [OHCI]) Subsystem: Creative Labs SB Audigy FireWire Port Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV+ VGASnoop- ParErr- Stepping- SERR- FastB2B- Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort- >SERR- <PERR- Latency: 32 (500ns min, 1000ns max), Cache Line Size: 32 bytes Interrupt: pin B routed to IRQ 19 Region 0: Memory at e4000000 (32-bit, non-prefetchable) [size=2K] Region 1: Memory at e3800000 (32-bit, non-prefetchable) [size=16K] Capabilities: [44] Power Management version 2 Flags: PMEClk- DSI- D1+ D2+ AuxCurrent=0mA PME(D0+,D1+,D2+,D3hot+,D3cold-) Status: D0 PME-Enable- DSel=0 DScale=0 PME+ 00:0d.0 Multimedia video controller: Brooktree Corporation Bt878 Video Capture (rev 11) Subsystem: Scion Corporation Unknown device 0012 Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- Status: Cap+ 66MHz- UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort- >SERR- <PERR- Latency: 32 (4000ns min, 10000ns max) Interrupt: pin A routed to IRQ 22 Region 0: Memory at ee800000 (32-bit, prefetchable) [size=4K] Capabilities: [44] Vital Product Data Capabilities: [4c] Power Management version 2 Flags: PMEClk- DSI+ D1- D2- AuxCurrent=0mA PME(D0-,D1-,D2-,D3hot-,D3cold-) Status: D0 PME-Enable- DSel=0 DScale=0 PME- 00:0d.1 Multimedia controller: Brooktree Corporation Bt878 Audio Capture (rev 11) Subsystem: Scion Corporation Unknown device 0012 Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- Status: Cap+ 66MHz- UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort- >SERR- <PERR- Latency: 32 (1000ns min, 63750ns max) Interrupt: pin A routed to IRQ 10 Region 0: Memory at ee000000 (32-bit, prefetchable) [size=4K] Capabilities: [44] Vital Product Data Capabilities: [4c] Power Management version 2 Flags: PMEClk- DSI+ D1- D2- AuxCurrent=0mA PME(D0-,D1-,D2-,D3hot-,D3cold-) Status: D0 PME-Enable- DSel=0 DScale=0 PME- 01:00.0 VGA compatible controller: nVidia Corporation NV25 [GeForce4 Ti 4200] (rev a3) (prog-if 00 [VGA]) Subsystem: Micro-Star International Co., Ltd. Unknown device 8700 Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- Status: Cap+ 66MHz+ UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort- >SERR- <PERR- Latency: 64 (1250ns min, 250ns max) Interrupt: pin A routed to IRQ 16 Region 0: Memory at e7000000 (32-bit, non-prefetchable) [size=16M] Region 1: Memory at f0000000 (32-bit, prefetchable) [size=128M] Region 2: Memory at ef800000 (32-bit, prefetchable) [size=512K] Expansion ROM at ef7e0000 [disabled] [size=128K] Capabilities: [60] Power Management version 2 Flags: PMEClk- DSI- D1- D2- AuxCurrent=0mA PME(D0-,D1-,D2-,D3hot-,D3cold-) Status: D0 PME-Enable- DSel=0 DScale=0 PME- Capabilities: [44] AGP version 2.0 Status: RQ=32 Iso- ArqSz=0 Cal=0 SBA+ ITACoh- GART64- HTrans- 64bit- FW+ AGP3- Rate=x1,x2,x4 Command: RQ=1 ArqSz=0 Cal=0 SBA- AGP- GART64- 64bit- FW- Rate=<none> # cat /proc/interrupts CPU0 0: 283 IO-APIC-edge timer 1: 691 IO-APIC-edge i8042 6: 5 IO-APIC-edge floppy 7: 0 IO-APIC-edge parport0 8: 2 IO-APIC-edge rtc 12: 4 IO-APIC-edge i8042 14: 20344 IO-APIC-edge ide0 15: 24156 IO-APIC-edge ide1 17: 108 IO-APIC-fasteoi ohci_hcd:usb2 18: 1 IO-APIC-fasteoi ohci_hcd:usb3 19: 1043 IO-APIC-fasteoi ohci1394, eth0 20: 23230 IO-APIC-fasteoi acpi, ohci_hcd:usb1 21: 781 IO-APIC-fasteoi ehci_hcd:usb4 22: 4 IO-APIC-fasteoi bttv0 23: 1943588 IO-APIC-fasteoi EMU10K1 NMI: 0 LOC: 548999 ERR: 0 MIS: 0 acpi use the same IRQ 20 as ohci_hcd:usb1 Software Environment: # cat .config|grep ACPI # Power management options (ACPI, APM) # ACPI (Advanced Configuration and Power Interface) Support CONFIG_ACPI=y # CONFIG_ACPI_AC is not set # CONFIG_ACPI_BATTERY is not set # CONFIG_ACPI_BUTTON is not set # CONFIG_ACPI_VIDEO is not set # CONFIG_ACPI_HOTKEY is not set # CONFIG_ACPI_FAN is not set # CONFIG_ACPI_DOCK is not set # CONFIG_ACPI_PROCESSOR is not set # CONFIG_ACPI_ASUS is not set # CONFIG_ACPI_IBM is not set # CONFIG_ACPI_TOSHIBA is not set CONFIG_ACPI_BLACKLIST_YEAR=2001 # CONFIG_ACPI_DEBUG is not set CONFIG_ACPI_EC=y CONFIG_ACPI_POWER=y CONFIG_ACPI_SYSTEM=y # CONFIG_ACPI_CONTAINER is not set # CONFIG_ACPI_SBS is not set CONFIG_PNPACPI=y # dmesg|grep ACPI BIOS-e820: 000000005fffc000 - 000000005ffff000 (ACPI data) BIOS-e820: 000000005ffff000 - 0000000060000000 (ACPI NVS) ACPI: RSDP (v000 ASUS ) @ 0x000f5810 ACPI: RSDT (v001 ASUS P4S8X 0x42302e31 MSFT 0x31313031) @ 0x5fffc000 ACPI: FADT (v001 ASUS P4S8X 0x42302e31 MSFT 0x31313031) @ 0x5fffc0c0 ACPI: BOOT (v001 ASUS P4S8X 0x42302e31 MSFT 0x31313031) @ 0x5fffc030 ACPI: MADT (v001 ASUS P4S8X 0x42302e31 MSFT 0x31313031) @ 0x5fffc058 ACPI: DSDT (v001 ASUS P4S8X 0x00001000 MSFT 0x0100000b) @ 0x00000000 ACPI: PM-Timer IO Port: 0xe408 ACPI: Local APIC address 0xfee00000 ACPI: LAPIC (acpi_id[0x00] lapic_id[0x00] enabled) ACPI: LAPIC_NMI (acpi_id[0x00] high edge lint[0x1]) ACPI: IOAPIC (id[0x02] address[0xfec00000] gsi_base[0]) ACPI: INT_SRC_OVR (bus 0 bus_irq 0 global_irq 2 dfl edge) ACPI: INT_SRC_OVR (bus 0 bus_irq 9 global_irq 20 low level) ACPI: IRQ0 used by override. ACPI: IRQ2 used by override. Using ACPI (MADT) for SMP configuration information ACPI: Core revision 20060707 ACPI: bus type pci registered ACPI: Interpreter enabled ACPI: Using IOAPIC for interrupt routing ACPI: PCI Interrupt Link [LNKA] (IRQs 3 4 5 6 7 10 *11 12 14 15) ACPI: PCI Interrupt Link [LNKB] (IRQs 3 4 5 6 7 *10 11 12 14 15) ACPI: PCI Interrupt Link [LNKC] (IRQs 3 4 *5 6 7 10 11 12 14 15) ACPI: PCI Interrupt Link [LNKD] (IRQs 3 4 5 6 7 10 11 12 14 15) *9 ACPI: PCI Interrupt Link [LNKE] (IRQs 3 4 5 6 7 10 11 12 14 15) *9 ACPI: PCI Interrupt Link [LNKF] (IRQs 3 4 5 6 7 10 11 12 14 15) *9 ACPI: PCI Interrupt Link [LNKG] (IRQs 3 4 5 6 7 10 11 12 14 15) *9 ACPI: PCI Interrupt Link [LNKH] (IRQs 3 4 5 6 7 10 11 12 14 15) *9 ACPI: PCI Root Bridge [PCI0] (0000:00) ACPI: Assume root bridge [\_SB_.PCI0] bus is 0 ACPI: PCI Interrupt Routing Table [\_SB_.PCI0._PRT] ACPI: PCI Interrupt Routing Table [\_SB_.PCI0.PCI1._PRT] pnp: PnP ACPI init pnp: PnP ACPI: found 16 devices PCI: Using ACPI for IRQ routing ACPI: PCI Interrupt 0000:00:02.5[A] -> GSI 16 (level, low) -> IRQ 16 ACPI: PCI Interrupt 0000:00:03.0[A] -> GSI 20 (level, low) -> IRQ 20 ACPI: PCI Interrupt 0000:00:03.1[B] -> GSI 21 (level, low) -> IRQ 17 ACPI: PCI Interrupt 0000:00:03.2[C] -> GSI 22 (level, low) -> IRQ 18 ACPI: PCI Interrupt 0000:00:04.0[A] -> GSI 19 (level, low) -> IRQ 19 ACPI: PCI Interrupt 0000:00:03.3[D] -> GSI 23 (level, low) -> IRQ 21 ACPI: PCI Interrupt 0000:01:00.0[A] -> GSI 16 (level, low) -> IRQ 16 ACPI: PCI Interrupt 0000:00:0d.0[A] -> GSI 17 (level, low) -> IRQ 22 ACPI: PCI Interrupt 0000:00:0a.2[B] -> GSI 19 (level, low) -> IRQ 19 ACPI: PCI Interrupt 0000:00:0a.0[A] -> GSI 18 (level, low) -> IRQ 23 It is with the last bios revison, 1005. With a 2.6.19.1-rt15 that have antother configuration and work fine, I get when running it with pci=noacpi: # cat /proc/interrupts CPU0 0: 228789 XT-PIC-XT timer 1: 229 XT-PIC-XT i8042 2: 0 XT-PIC-XT cascade 5: 148178 XT-PIC-XT EMU10K1 6: 5 XT-PIC-XT floppy 7: 1 XT-PIC-XT parport0 8: 2 XT-PIC-XT rtc 9: 4641 XT-PIC-XT acpi, ohci_hcd:usb1, ehci_hcd:usb2, ohci1394, ohci_hcd:usb3, ohci_hcd:usb4, eth0 10: 4 XT-PIC-XT bttv0 11: 10019 XT-PIC-XT nvidia 12: 4 XT-PIC-XT i8042 14: 19935 XT-PIC-XT ide0 15: 3605 XT-PIC-XT ide1 NMI: 729962 LOC: 228630 ERR: 0 MIS: 0 I am trying to run the 2.6.20-rt8 with noapic and nmi_watchdog=0. I get: # cat /proc/interrupts CPU0 0: 273 XT-PIC-XT timer 1: 5158 XT-PIC-XT i8042 2: 0 XT-PIC-XT cascade 5: 5921433 XT-PIC-XT EMU10K1 6: 5 XT-PIC-XT floppy 7: 1 XT-PIC-XT parport0 8: 2 XT-PIC-XT rtc 9: 1 XT-PIC-XT acpi 10: 35610 XT-PIC-XT ohci_hcd:usb2, ehci_hcd:usb4, bttv0 11: 101814 XT-PIC-XT ohci1394, ohci_hcd:usb1, ohci_hcd:usb3, eth0 12: 4 XT-PIC-XT i8042 14: 96317 XT-PIC-XT ide0 15: 70673 XT-PIC-XT ide1 NMI: 0 LOC: 2294440 ERR: 0 MIS: 0 I also redone the kernel config from scratch with this 2.6.20-rt8. I try first without noapic and it hanged after 2 days, so I am trying now with noapic. Problem Description: I really want to use CONFIG_X86_PM_TIMER in the ACPI config. The problem look like the ACPI is assigning shared IRQ and rt kernels don't like it. It freeze from time to time. Sometime after a few hours, sometime after a few hours. I also don't know how to reproduce it, it just hang when it hang. I try to add some debug stuffs in the kernel but cannot see anithing wrong in dmesg. Steps to reproduce: 1) Boot with ACPI enabled. 2) Wait until it hang 3) It doesn't seem to matter if the system is quite or heavily loaded. I get some hangs when burning a CD and having the network and the proc heavily loaded with amule at the same time. I also get some hangs when only X, fvwm and a gnome console was running.
Created attachment 11044 [details] kernel config My current kernel config. The system freezed yesterday with it. I am currently testing if booting with "noacpi" help.
Created attachment 11045 [details] acpidump An acpidump of my hardware
Created attachment 11046 [details] dmesg output
Unfortunately, it was just frozen again with "noacpi" when I come back from a walk. Is it something more I can do?
have a look at sysrq http://lxr.linux.no/linux/Documentation/sysrq.txt if the local console isn`t useable due to freeze you may redirect kernel message to external attached serial console and trigger sysrq from there. there´s many information on the net how to setup
for me she showed up one time in the floor of hour, however as a result of this problem I lost a mysql database - mysql innodb not start - "Accertion error" - did not help even "innodb_force_recovery = 4", backup was an a week remoteness - the works of whole department lost data for a few days, the management simply in shock - I going to discharge from job ((( this problem already whole year: ----------- I'm stumped trying to track down the below intermittent problem..... I've confirmed this problem on 2.6.19, 2.6.20 and 2.6.21. http://lkml.org/lkml/2007/6/14/154 http://kerneltrap.org/mailarchive/linux-kernel/2007/6/14/103765 "System hang from time to time" http://bugzilla.kernel.org/show_bug.cgi?id=8300 "sata hotplug removal of drive freezes all 2.6.21 kernels" http://bugzilla.kernel.org/show_bug.cgi?id=8421 "(sata_via) system freeze in random time" http://bugzilla.kernel.org/show_bug.cgi?id=9115 "kernel freezes with on clockevent warning" http://bugzilla.kernel.org/show_bug.cgi?id=9834 "[pata_ali] Unspecified hang on Acer laptop" http://bugzilla.kernel.org/show_bug.cgi?id=9898 "System freezes after I/O on pata_jmicron device" http://bugzilla.kernel.org/show_bug.cgi?id=10296 -----------
Dominique: Does booting with clocksource=acpi_pm avoid the issue?