Re: [Libreboot] X60 freezes with kernel > 4.0.7

[Francis Rowe]

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On 16/07/15 12:35, Francis Rowe wrote:
> 
> 
> On 16/07/15 11:08, Robert Alessi wrote:
>> On Wed, Jul 15, 2015 at 04:20:56PM -0500, Will Hill wrote:
>>> Is your fan in good condition and your heat exchanger dust
>>> free? The slim series, denoted by the s, is known for
>>> overheating.
> 
>> Thank you very much for the hint.  You are perfectlty right.  So
>> I carefully cleaned the fan and the heat exchanger this morning. 
>> Then I booted 4.1.2, and worked on it for about an hour.  The
>> X60s did not freeze, and to my knowledge xsensors gave me
>> acceptable values, such as 47.0°C coretemp and 2769 RPM for
>> fan1.
> 
>> However --and this is the important point-- I tried to reboot 
>> twice: - on the first attempt, I got snapshot1.png (attached); -
>> on the second attempt, I got snapshot2.png (also attached),
>> namely a kernel panic.  This is much worse, as it makes kernels
>> starting from 4.1.1 unusable at least for libreboot laptops such
>> as mine.
> 
>> Then I reverted to linux-libre 4.0.7, and everything works fine 
>> again.
> 
>> Provisional conclusion: I strongly suspect that something is
>> wrong in kernels above 4.0.7.  Is it related to the bluetooth
>> subsystem? I can't say.  But I am convinced there is something.
> 
> 
> Looks like it's related to the graphics (i915 driver). Can you
> compile a full bug report? Also, boot with drm.debug=0x06 enabled
> on the "linux" line in GRUB. Then try to reproduce the error, and
> post the logs. (especially kernel logs at boot, and the crash
> logs)
> 
> https://bugzilla.kernel.org/ is where you can submit bug reports
> for the linux kernel.
> 
> 

Please take what I said about it being graphics-related with a pinch
of salt.
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