Created attachment 111170 [details] GPU crash dump I have experienced a desktop freeze during few seconds. System messages relate that to a GPU hang. In what follows, further information, and the GPU crash dump. * This situation was experienced under Kubuntu vivid (updated on the 22th, december 2014), and compositor mode was enabled on the window manager kwin_x11. (No problem encountered without the compositor mode) * Linux version is 3.18.0-031800-generic #201412071935 SMP, from Ubuntu repository * The package used for xserver-xorg-video-intel is from http://ppa.launchpad.net/xorg-edgers/ppa/ubuntu: 2:2.99.916+git20141215.99537089-0ubuntu0sarvatt * system messages: [ 3265.604584] [drm] stuck on render ring [ 3265.606629] [drm] GPU HANG: ecode 0:0x002883e6, in kwin_x11 [3333], reason: Ring hung, action: reset [ 3265.606640] [drm] GPU hangs can indicate a bug anywhere in the entire gfx stack, including userspace. [ 3265.606644] [drm] Please file a _new_ bug report on bugs.freedesktop.org against DRI -> DRM/Intel [ 3265.606649] [drm] drm/i915 developers can then reassign to the right component if it's not a kernel issue. [ 3265.606653] [drm] The gpu crash dump is required to analyze gpu hangs, so please always attach it. [ 3265.606661] [drm] GPU crash dump saved to /sys/class/drm/card0/error
What version of Mesa are you using (glxinfo | grep 'GL version')? Also, what version of the X server are you using? This looks an awful lot like a bug we fixed some time back.
Sorry for the delay. version of Mesa: 10.5.0~git20141210.47aaabda version of xserver-xorg-core: 1.16.2.901-1ubuntu3 version of xserver-xorg-video-intel: 2.99.916+git20141215.99537089
Please reopen if you can still reproduce with Mesa 17.0.
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