Created attachment 108426 [details] related part of kern.log file NAME="Ubuntu" VERSION="12.04.5 LTS, Precise Pangolin" ID=ubuntu ID_LIKE=debian PRETTY_NAME="Ubuntu precise (12.04.5 LTS)" VERSION_ID="12.04" DISTRIB_ID=Ubuntu DISTRIB_RELEASE=12.04 DISTRIB_CODENAME=precise DISTRIB_DESCRIPTION="Ubuntu 12.04.5 LTS" Linux 4720z 3.13.0-38-generic #65~precise1-Ubuntu SMP Thu Oct 9 19:24:05 UTC 2014 i686 i686 i386 GNU/Linux Chromium Version 37.0.2062.120 Ubuntu 12.04 (281580) Go to http://ello.co/johndcook and the GPU will crash with Oct 26 00:43:08 4720z kernel: [242523.988084] [drm] stuck on render ring Oct 26 00:43:08 4720z kernel: [242523.988096] [drm] GPU crash dump saved to /sys/class/drm/card0/error Oct 26 00:43:08 4720z kernel: [242523.988101] [drm] GPU hangs can indicate a bug anywhere in the entire gfx stack, including userspace. Oct 26 00:43:08 4720z kernel: [242523.988106] [drm] Please file a _new_ bug report on bugs.freedesktop.org against DRI -> DRM/Intel Oct 26 00:43:08 4720z kernel: [242523.988110] [drm] drm/i915 developers can then reassign to the right component if it's not a kernel issue. Oct 26 00:43:08 4720z kernel: [242523.988115] [drm] The gpu crash dump is required to analyze gpu hangs, so please always attach it. Oct 26 00:43:08 4720z kernel: [242523.989889] [drm:i915_set_reset_status] *ERROR* render ring hung inside bo (0xd32a000 ctx 0) at 0xd32aadc Oct 26 00:43:08 4720z kernel: [242524.496024] [drm:i915_reset] *ERROR* Failed to reset chip. Oct 26 00:43:18 4720z kernel: [242533.988090] [drm:i915_gem_wait_for_error] *ERROR* Timed out waiting for the gpu reset to complete Oct 26 00:43:18 4720z kernel: [242533.988107] [drm:i915_gem_wait_for_error] *ERROR* Timed out waiting for the gpu reset to complete Oct 26 00:43:18 4720z kernel: [242534.148091] [drm:i915_gem_wait_for_error] *ERROR* Timed out waiting for the gpu reset to complete Oct 26 00:43:18 4720z kernel: [242534.204095] [drm] GMBUS [i915 gmbus vga] timed out, falling back to bit banging on pin 2
Is this 100% reproducible? Every time you go to that website, you can reproduce the GPU hang? Also, can you please reproduce the bug and then attach /sys/class/drm/card0/error to this bug report?
It's quite important that we have the dump of the error. Right now we don't even know which platform we are talking about nor which component of the graphic stack is to blame. Useful information to provide as well is the versions of the intel xorg driver and mesa. It's been a month with no answer, so closing for time out. Please do re-open if the problem persists and you can provide the required information. Thanks,
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