Intel driver hangs every time KDE uses one of the special system effects. Kernel version: $ uname -a Linux darkstar 3.19.0-15-generic #15-Ubuntu SMP Thu Apr 16 23:32:37 UTC 2015 x86_64 x86_64 x86_64 GNU/Linux -- Logcat output -- [ 47.675521] [drm] stuck on render ring [ 47.676178] [drm] GPU HANG: ecode 7:0:0x00000000, in kwin_x11 [1519], reason: Ring hung, action: reset [ 47.676180] [drm] GPU hangs can indicate a bug anywhere in the entire gfx stack, including userspace. [ 47.676180] [drm] Please file a _new_ bug report on bugs.freedesktop.org against DRI -> DRM/Intel [ 47.676181] [drm] drm/i915 developers can then reassign to the right component if it's not a kernel issue. [ 47.676182] [drm] The gpu crash dump is required to analyze gpu hangs, so please always attach it. [ 47.676183] [drm] GPU crash dump saved to /sys/class/drm/card0/error [ 47.683468] drm/i915: Resetting chip after gpu hang
Created attachment 115300 [details] Error file dmesg told me attach
Filed ubuntu bug: https://bugs.launchpad.net/ubuntu/+source/xserver-xorg-video-intel/+bug/1447919
Package version: $ apt-cache policy xserver-xorg-video-intel xserver-xorg-video-intel: Installed: 2:2.99.917-1~exp1ubuntu2build1 Candidate: 2:2.99.917-1~exp1ubuntu2build1 Version table: *** 2:2.99.917-1~exp1ubuntu2build1 0 500 http://us.archive.ubuntu.com/ubuntu/ vivid/main amd64 Packages 100 /var/lib/dpkg/status
The submitted batch is full of 0xffffffff
And there's a small Y-tiled buffer just before the batch that is being written to.
Mika, Chris: can I do something to remediate it?
We seem to have neglected the bug a bit, apologies. ohan Dhruva, since There were improvements pushed in kernel, xf86-video-intel & mesa that will benefit to your system, so please re-test with latest kernel, xf86-video-intel & mesa and mark as REOPENED if you can reproduce (and attach fresh gpu error dump & kernel log) and RESOLVED/* if you cannot reproduce.
Can't reproduce any more.
(In reply to Rohan Dhruva from comment #8) > Can't reproduce any more. Thanks for this confirmation
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