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 ** Attachment added: "dmesg of the oops on a Thinkpad R31" http://launchpadlibrarian.net/9710830/dmesg-r31-acpioops.txt.gz -- [gutsy] thinkpad_acpi oops on thinkpad t22 https://bugs.launchpad.net/bugs/145857 You received this bug notification because you are a member of Ubuntu Bugs, which is the bug contact for Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs