Kernel Bug Tracker – Bug 34272
Kernel panic when issuing "echo disabled > /proc/acpi/ibm/bluetooth" during startup
Last modified: 2011-05-09 09:33:58 UTC
Created attachment 56292 [details]
I've configured acpid to issue the above given command when I press Fn+F6 to disable the BT module built into my laptop. Running 2.6.39-rc5, the kernel panics when I press Fn+F6 during startup, preferably when X/gdm is starting. I wasn't able to reproduce the problem once the system was "settled".
I never faced this problem in 2.6.38 or any prior version.
Attached you find a photo (sorry for the bad quality, but it should be readable) of the messages and the lsusb output.
Steps to reproduce:
- Turn on the laptop. The bluetooth module is activated by default.
- Press Fn+F6 after acpid is started, i.e. while gdm is starting
- watch the kernel panic
- Thinkpad Z60m
- Gentoo Linux
- if you need version numbers of some particular userspace programs, let me know
Created attachment 56302 [details]
The promised photo showing the panic message
Created attachment 56312 [details]
OK, now I was able to trigger the bug during a running KDE session. So I withdraw my statement that the problem isn't reproducible once the boot process is finished.
I also suspect this bug being the reason that entering Suspend to RAM fails with a flashing Caps Lock LED since 2.6.39-rc5. Suspend to RAM worked flawlessly with .38.
Does 2.6.39-rc6 fix it?
(In reply to comment #4)
> Does 2.6.39-rc6 fix it?
Apparently, yes. I can't reproduce the panic with 2.6.39-rc6, and suspend works again. Thank you!
Thanks for the update.