Created attachment 96112 [details] GPU crash dump My system hangs for a few seconds at seemingly random times and I get the following error in the log: [drm:ring_stuck] *ERROR* Kicking stuck semaphore on render ring Sometimes accompanied by: [drm] stuck on render ring [drm] stuck on blitter ring I'm using KDE 4.12.2. System: Intel Sandy Bridge with nVidia Optimus and Core i7 Kernel: 3.13.6 I'm using the Intel pre-3.0 DDX drivers (currently at 2.99.911).
*** This bug has been marked as a duplicate of bug 54226 ***
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