[Bug 99089] Random screen lockups

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=99089

Michel Dänzer <michel at daenzer.net> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
         QA Contact|xorg-team at lists.x.org       |
            Product|xorg                        |DRI
          Component|Driver/Radeon               |DRM/Radeon
           Assignee|xorg-driver-ati at lists.x.org |dri-devel at lists.freedesktop
                   |                            |.org
            Version|7.7 (2012.06)               |unspecified

--- Comment #1 from Michel Dänzer <michel at daenzer.net> ---
(In reply to Witold Baryluk from comment #0)
> 
> It started few weeks ago, and I am getting sporadic screen lookups.

Did the kernel get upgraded to a newer version around that time?


> $ dmesg
> [37571.611965] [drm:intel_pipe_update_end [i915]] *ERROR* Atomic update
> failure on pipe A (start=163606 end=163607) time 560 us, min 1192, max 1199,
> scanline start 1172, end 1213

Are there any other error messages in dmesg after this? Maybe attach the whole
dmesg output.

It looks like maybe a DRM (driver) error path doesn't unlock
dev->mode_config.mutex, so any code trying to lock that hangs.

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