[Bug 89196] Radeon GPU crashes at random times (GPU lockup)

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=89196

            Bug ID: 89196
           Summary: Radeon GPU crashes at random times (GPU lockup)
           Product: DRI
           Version: XOrg git
          Hardware: x86-64 (AMD64)
                OS: Linux (All)
            Status: NEW
          Severity: normal
          Priority: medium
         Component: DRM/Radeon
          Assignee: dri-devel at lists.freedesktop.org
          Reporter: info at maciejgluszek.com

Created attachment 113583
  --> https://bugs.freedesktop.org/attachment.cgi?id=113583&action=edit
Syslog output during lockup

Hello,

There are several similar bug reports but someone asked to fill every instance
as separate bug so here goes.

I'm running Ubuntu 14.04 on a 64bit machine with kernel 3.13.0-46-generic
#75-Ubuntu SMP.

My GPU is: VGA compatible controller: Advanced Micro Devices, Inc. [AMD/ATI]
RV635/M86 [Mobility Radeon HD 3650]

Packages:
xserver-xorg (1:7.7+1ubuntu8.1) 
xorg-server (2:1.15.1-0ubuntu2.6) 
xserver-xorg-video-ati (1:7.3.0-1ubuntu3.1) 

Randomly, sometimes 2-3 times a day, sometimes once every 2 days i get GPU
lockups. For 2-3 seconds the screen freezes, then goes black for a couple of
seconds, and then its still "frozen" and flickering when i move the mouse.

I am able to switch to console with ctrl+alt+f{n} but when coming back to
desktop, the screen is in the same frozen state.

I am NOT using proprietary drivers from AMD.

I attached an output from syslog when it happens, there seems to be no output
in Xorg.log though.

If you need any more information, please let me know.

Thanks!

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