[gutsy] thinkpad_acpi oops on thinkpad t22

(Not an acpi-support bug, leaving targetted at the kernel)

Apologies for targeting the initial report to acpi-support.

Further information:

This occurs on a fresh install using http://cdimage.ubuntu.com/xubuntu/daily-live/20070923/gutsy-desktop-i386.iso. I reinstalled to minimize upgrade errors. The kernel update afterwards produces the same oops (and is what was used in the dmesg).

several of the /proc/acpi/ibm/ entries are missing which can cause monitoring applications to fail.
$ ls /proc/acpi/ibm/
driver hotkey light video

I tried patching the ubuntu source with thinkpad_acpi 0.16 (patches clean with offsets) but that still produces an oops.

I then tried vanilla 2.6.22.9 from kernel.org and patch with 0.16 and there is no oops and the missing entries are back.
$ ls /proc/acpi/ibm
beep driver fan led thermal volume
brightness ecdump hotkey light video

In both cases .config was produced by copying /boot/config-2.6.22-12-generic and then 'make oldconfig' to try and eliminate configuration differences as a variable. I followed the procedure in https://wiki.ubuntu.com/KernelCustomBuild.

Gutsy commit df21414650ebc3538fcb9e78e1422ecabf1bdb38

I have te same or a similar problem here on a Thinkpad R31. I believe it is triggered by a "modprobe -r thinkpad_acpi", this process is here now since over half an hour.

107 4454 0.0 0.6 5612 3176 ? Ss 16:29 0:04 /usr/sbin/hald
root 4455 0.0 0.2 3096 1040 ? S 16:29 0:00 \_ hald-runner
107 4514 0.0 0.1 2160 896 ? S 16:29 0:00 \_ hald-addon-keyboard: listening on /dev/input/event1
107 4519 0.0 0.1 2156 876 ? S 16:29 0:00 \_ hald-addon-acpi: listening on acpid socket /var/run/acpid.socket
107 4539 0.0 0.2 3260 1188 ? S 16:29 0:02 \_ hald-addon-storage: polling /dev/scd0 (every 2 sec)
107 4656 0.0 0.1 2156 888 ? S 16:29 0:00 \_ hald-addon-keyboard: listening on /dev/input/event7
root 9364 0.0 0.0 1752 504 ? S 17:43 0:00 \_ /bin/sh ./linux/hal-system-power-hibernate-linux
root 9365 0.0 0.2 2872 1424 ? S 17:43 0:00 | \_ /bin/bash /etc/acpi/hibernate.sh force
root 9936 0.3 0.1 1696 608 ? S 17:43 0:10 | \_ modprobe -r thinkpad_acpi
107 9903 0.0 0.1 2156 892 ? S 17:43 0:00 \_ hald-addon-keyboard: listening on /dev/input/event5
107 9906 0.0 0.1 2156 892 ? S 17:43 0:00 \_ hald-addon-keyboard: listening on /dev/input/event4
107 9908 0.0 0.1 2160 892 ? S 17:43 0:00 \_ hald-addon-keyboard: listening on /dev/input/event6

I found this link with more information: http://www.nabble.com/Bug-435655:-linux-image-2.6.21-2-686:-ibm-acpi-oops-on-removal-t4205682.html .

Ciao

Martin

linux-source-2.6.22 (2.6.22-13.40) gutsy; urgency=low

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