http://bugzilla.kernel.org/show_bug.cgi?id=6415
Summary: Problem with /proc/acpi after resume
Kernel Version: 2.6.15 .. 2.6.17-rc2
Status: NEW
Severity: normal
Owner: [EMAIL PROTECTED]
Submitter: [EMAIL PROTECTED]
Most recent kernel where this bug did not occur: 2.6.14
Distribution: Gentoo
Hardware Environment: Asus M6V notebook
Problem Description:
If I do suspend to RAM and then suspend to disk (swsusp or suspend2), after
resume every proces which tries to read from /proc/acpi/* freezes, starts to
take 100% of CPU and can't be killed (even with kill -9). The whole system does
not crash, and there's no output in dmesg. Repeated suspend to
ram or suspend to disk is OK, only this combination triggers it.
Steps to reproduce:
echo mem > /sys/power/state
echo disk > /sys/power/state
cat /proc/acpi/thermal_zone/THRM/temperature
lspci output:
0000:00:00.0 Host bridge: Intel Corporation Mobile 915GM/PM/GMS/910GML Express
Processor to DRAM Controller (rev 03)
0000:00:01.0 PCI bridge: Intel Corporation Mobile 915GM/PM Express PCI Express
Root Port (rev 03)
0000:00:1b.0 Class 0403: Intel Corporation 82801FB/FBM/FR/FW/FRW (ICH6 Family)
High Definition Audio Controller (rev 04)
0000:00:1d.0 USB Controller: Intel Corporation 82801FB/FBM/FR/FW/FRW (ICH6
Family) USB UHCI #1 (rev 04)
0000:00:1d.1 USB Controller: Intel Corporation 82801FB/FBM/FR/FW/FRW (ICH6
Family) USB UHCI #2 (rev 04)
0000:00:1d.2 USB Controller: Intel Corporation 82801FB/FBM/FR/FW/FRW (ICH6
Family) USB UHCI #3 (rev 04)
0000:00:1d.3 USB Controller: Intel Corporation 82801FB/FBM/FR/FW/FRW (ICH6
Family) USB UHCI #4 (rev 04)
0000:00:1d.7 USB Controller: Intel Corporation 82801FB/FBM/FR/FW/FRW (ICH6
Family) USB2 EHCI Controller (rev 04)
0000:00:1e.0 PCI bridge: Intel Corporation 82801 Mobile PCI Bridge (rev d4)
0000:00:1f.0 ISA bridge: Intel Corporation 82801FBM (ICH6M) LPC Interface Bridge
(rev 04)
0000:00:1f.1 IDE interface: Intel Corporation 82801FB/FBM/FR/FW/FRW (ICH6
Family) IDE Controller (rev 04)
0000:01:00.0 Ethernet controller: Marvell Technology Group Ltd. 88E8001 Gigabit
Ethernet Controller (rev 13)
0000:01:01.0 CardBus bridge: Ricoh Co Ltd RL5c476 II (rev b3)
0000:01:01.1 FireWire (IEEE 1394): Ricoh Co Ltd R5C552 IEEE 1394 Controller
(rev 08)
0000:01:01.2 Class 0805: Ricoh Co Ltd R5C822 SD/SDIO/MMC/MS/MSPro Host Adapter
(rev 17)
0000:01:01.3 System peripheral: Ricoh Co Ltd R5C592 Memory Stick Bus Host
Adapter (rev 08)
0000:01:01.4 System peripheral: Ricoh Co Ltd xD-Picture Card Controller (rev 03)
0000:01:02.0 Network controller: Intel Corporation PRO/Wireless 2915ABG MiniPCI
Adapter (rev 05)
0000:03:00.0 VGA compatible controller: ATI Technologies Inc M24 1P [Radeon
Mobility X600]
Additional information:
I was pointed here from LKML, the original post is here:
http://lkml.org/lkml/2006/4/19/135
The problem happens after SMBus was enabled in drivers/pci/quirks.c (commit
89fbb69c4f285019ba5e029963dc11cc6beb078a, the patch originates here:
http://lists.lm-sensors.org/pipermail/lm-sensors/2005-September/013663.html ).
But it doesn't matter whether I2C and Hardware Monitoring modules are loaded,
only whether SMBus is enabled.
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