[Bug 103529] [GM45] GPU hang with mpv fullscreen (bisected)

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=103529

            Bug ID: 103529
           Summary: [GM45] GPU hang with mpv fullscreen (bisected)
           Product: Mesa
           Version: 17.2
          Hardware: x86 (IA32)
                OS: Linux (All)
            Status: NEW
          Severity: normal
          Priority: medium
         Component: Drivers/DRI/i915
          Assignee: dri-devel at lists.freedesktop.org
          Reporter: adeshk at hotmail.com
        QA Contact: dri-devel at lists.freedesktop.org

Complete graphics freeze when watching videos in mpv fullscreen mode with
hardware acceleration enabled (vaapi), which results in GPU hang. Video plays
just fine in normal windowed mode.

After mpv crashes, following is printed on the terminal:
intel_do_flush_locked failed: Input/output errord: 47

I bisected mesa between 17.1.8 and 17.2.0 to find first bad commit to be
79f2a5541f92920d35d3621179f7377c97cc75e1

Relevant thread on Arch Linux forums:
https://bbs.archlinux.org/viewtopic.php?id=230688

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