El 01/11/13 15:45, Daniel Vetter escribió:
> On Fri, Nov 01, 2013 at 01:29:30PM -0300, Cristian Rodríguez wrote:
>> Hi:
>>
>> I have a dell laptop XPS 15z, BIOS revision A12, in which a monitor
>> is connected to the displayport .. everything was working OK until
>> the very latest kernel merge.
>>
>> Now, when the monitor is plugged (but NOT when using the laptop
>> display) the GPU freezes the screen for a few seconds, it is
>> impossible to do anything other than waiting until it recovers.
>>
>> reverting commit c6cd2ee2d59111a07cd9199564c9bdcb2d11e5cf
>> "drm/i915/dp: workaround BIOS eDP bpp clamping issue gets things
>> back to the previous working status.
>
> Can you please boot with drm.debug=0xe added to your kernel cmdline,
> reproduce the issue and then attach the complete dmesg?
>
> Thanks, Daniel
>

Thanks for your quick reply, I appreciate that.

Ok, I reverted my local tree to include the mentioned commit ...
attached to this message is the requested log.

the error shown after the freezing behaviour is:

"[drm:ring_stuck] *ERROR* Kicking stuck wait on render ring"



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