Hi Willy et al,
Please consider
f70e957cda22 x86: Don't use the EFI reboot method by default,
2011-07-06
for application to the 2.6.32.y and 2.6.34.y trees. The patch was
applied upstream late in the 3.0 cycle, so newer kernels don't need
it.
In 2011, Keith Ward wrote[1]:
> When attempting to reboot my my UEFI enabled system, the system hangs when
> calling reboot requiring me to manually reset the system via the reset switch.
>
> Screenshot: http://twitgoo.com/29bq1c
Ben Hutchings writes[1]:
> Version: 3.0.0-1
>
> I also had this problem on my own system, but it is fixed now.
> I bisected the fix to:
>
> commit f70e957cda22d309c769805cbb932407a5232219
> Author: Matthew Garrett <m...@redhat.com>
> Date: Wed Jul 6 16:52:37 2011 -0400
>
> x86: Don't use the EFI reboot method by default
>
> which is basically equivalent to the workaround!
>
> I'll also apply this fix to squeeze as it's so simple.
Keith Ward also wrote[1]:
> It seems as if this has recently been reported at Ubuntu's Launchpad as well:
> https://bugs.launchpad.net/ubuntu/+source/linux/+bug/721576
There are a variety of reports of the same panic at that bug on
2.6.32.y-, 2.6.38.y-, and 2.6.39-based kernels. Passing "reboot=a,w"
on the kernel command line avoids trouble for reporters.
Regards,
Jonathan
[1] http://bugs.debian.org/626022
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