[Bug 91393] [bdw edp] Screen Flickering

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=91393

--- Comment #71 from Mika Kahola <mika.kahola at intel.com> ---
(In reply to Tom Furniss from comment #69)
> Created attachment 120919 [details]
> syslog for 3 patches with increased debug
> 
> Hi Mika
> 
> No problem.  I applied the following patches to the latest drm-intel-nightly:
> https://patchwork.freedesktop.org/patch/69394/
> https://patchwork.freedesktop.org/patch/69395/
> https://patchwork.freedesktop.org/patch/69396/
> https://bugs.freedesktop.org/attachment.cgi?id=120893
> 

Thank you Tom for providing a log. The issue still persists and you keep
receiving a lot of short hotplug detection pulses.

> As expected, flickering is still present.  syslog attached.
> 
> The last patch that fixed the issue was this:
> https://patchwork.freedesktop.org/patch/66697/
> Is there a reason we're not using it now?
During the patch review I received comments that I should move the idea of
tracking the config changes to its current location in patch
https://patchwork.freedesktop.org/patch/69394/

If you have time, it would be interesting to know if you apply this patch
https://patchwork.freedesktop.org/patch/66697/
on top of current -nightly and check if it still fixes the flickering.

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