[Bug 90159] New: Intel DRM GPU hang in Ubuntu 15.04

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=90159

            Bug ID: 90159
           Summary: Intel DRM GPU hang in Ubuntu 15.04
           Product: DRI
           Version: XOrg git
          Hardware: x86-64 (AMD64)
                OS: Linux (All)
            Status: NEW
          Severity: normal
          Priority: medium
         Component: DRM/Intel
          Assignee: intel-gfx-bugs at lists.freedesktop.org
          Reporter: rohandhruva at gmail.com
        QA Contact: intel-gfx-bugs at lists.freedesktop.org
                CC: intel-gfx-bugs at lists.freedesktop.org

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

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