[Bug 90509] New: [drm] GPU HANG - screen freezes for aprox. 20 seconds

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=90509

            Bug ID: 90509
           Summary: [drm] GPU HANG - screen freezes for aprox. 20 seconds
           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: windose at kabelmail.de
        QA Contact: intel-gfx-bugs at lists.freedesktop.org
                CC: intel-gfx-bugs at lists.freedesktop.org

Created attachment 115879
  --> https://bugs.freedesktop.org/attachment.cgi?id=115879&action=edit
dmesg

EA50_HW Acer Incorporated [ALI] Device [1025:0775] 
Intel Corporation Haswell-ULT Integrated Graphics Controller [8086:0a06] (rev
0b) 
Kernel driver in use: i915 
x86_64 3.16.0-37-generic

screen freezes randomly during work for some aprox. 20 seconds.
After that KDE desktop notification popup windows says: Desktop effects will be
restarted.

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