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Old 09-12-2011, 07:50 PM
Thibault Manlay
 
Default Bug#639331: linux-image-2.6.36-rc6-686-bigmem: Closing laptop lid hangs the system on Dell studio 1555

On 12/09/11 21:36, Jonathan Nieder wrote:
> That's the theory, but if Thibault has to use the power button to
> reboot to recover, then something's going wrong, no?
>
> Anyway, it seems it's time to take this upstream. Thibault, could you
> send a summary of findings so far (i.e., what the state is like when
> closing the lid, problem only shows up with CONFIG_LOCKUP_DETECTOR=y,
> the nolapic kernel parameter works around it, whatever logs it was
> possible to get of what happens until the lid closes, and an acpidump)
> to the linux-acpi@vger.kernel.org list (no subscription needed, since
> the convention is to always reply-to-all), cc-ing this bug log?
>
> Sorry for the trouble, and good luck.
>

Hello,

I tried to get a kernel dump with kdump/kexec to have something I could
work on, but no success. The kernel hangs and doesn't reboot on the
crash kernel.
Disabling SMP solves the problem too (it is required for kdump, but SMP
can be enabled if you tell kdump to use one cpu), I feel a little bit
discouraged.

Since I can't find any pertinent similar problem (they are either too
old or with no answer, or both) I begin to believe this is a hardware
problem on my laptop. I'll try to patch the BIOS someday.

Fun fact : closing lid hangs the system, but after I have done a single
suspend-to-ram, I can close the lid as much as I want without getting
the system to hang...


Thanks,

--
Thibault Manlay
 
Old 09-12-2011, 08:25 PM
Jonathan Nieder
 
Default Bug#639331: linux-image-2.6.36-rc6-686-bigmem: Closing laptop lid hangs the system on Dell studio 1555

Thibault Manlay wrote:

> Since I can't find any pertinent similar problem (they are either too
> old or with no answer, or both) I begin to believe this is a hardware
> problem on my laptop. I'll try to patch the BIOS someday.
>
> Fun fact : closing lid hangs the system, but after I have done a single
> suspend-to-ram, I can close the lid as much as I want without getting
> the system to hang...

Neat. Yes, it's probably a BIOS bug, but with "acpidump" output from
before and after suspending, the people at linux-acpi@vger might be able
to help.



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