[Bug 92235] Graphics frozen / stuck after random time (minutes-hours) messages contain "drm:intel_pipe_update_end [i915]] *ERROR* Atomic update failure on pipe A ..."

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=92235

--- Comment #15 from Jan Bertran <joanbe at gmail.com> ---
(In reply to Jan Bertran from comment #14)
> With debug full, the assert crashes in minutes/seconds.
> Now running the test with UXA instead of default SNA
> cat /etc/X11/xorg.conf 
> Section "Device"
>         Identifier "Intel UXA"
>         Driver  "Intel"
>         Option "AccelMethod" "UXA"
> EndSection
> 
> First difference: there are no debug messages from xorg_video_Intel.

2 days working, UXA seems valid workaround (at least with
linux-image-4.3.0-994-generic_4.3.0-994.201511052100_amd64.deb)

for me, next tests pending xf86-video-intel from git instead of ubuntu release
and sna enabled, and maybe J1900 instead of N3150.

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