Arch Linux

wander

Member

Registered: 2012-03-03

Posts: 32

kernel 3.7.0 kernel panic when switching from AC to battery

(discussion started here)

Steps to reproduce:

1. Boot kernel 3.7.0 to gui or console
2. If not already running on battery do so
3. Connect AC power supply -> kernel panic

Here is my bug report.

And here is another one I just found which refers to this commit as a possible cause.

Edit: As mentioned before removing laptop-mode-tools does indeed fix this issue.

Edit 2: 

Apparently

echo 0 > /proc/sys/kernel/nmi_watchdog
echo 1 > /proc/sys/kernel/nmi_watchdog

does trigger this bug.

Here are some further information: https://lkml.org/lkml/2012/12/14/65

Last edited by wander (2012-12-15 17:02:14)

ccc1

Member

Registered: 2009-04-16

Posts: 111

Re: kernel 3.7.0 kernel panic when switching from AC to battery

Bug seems to be fixed:
http://git.kernel.org/?p=linux/kernel/g … 4124f48905

Guess with upcoming 3.7.2 we should be fine. Thanks for reporting the bug.

ccc1