[Bug 111888] New: [SKL] GPU hang when watching video using GNOME MPV using VAAPI

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=111888

            Bug ID: 111888
           Summary: [SKL] GPU hang when watching video using GNOME MPV
                    using VAAPI
           Product: DRI
           Version: DRI git
          Hardware: Other
                OS: All
            Status: NEW
          Severity: not set
          Priority: not set
         Component: DRM/Intel
          Assignee: intel-gfx-bugs at lists.freedesktop.org
          Reporter: leozinho29_eu at hotmail.com
        QA Contact: intel-gfx-bugs at lists.freedesktop.org
                CC: intel-gfx-bugs at lists.freedesktop.org

Created attachment 145617
  --> https://bugs.freedesktop.org/attachment.cgi?id=145617&action=edit
Logs and MPV configuration

When watching videos with GNOME MPV on which VAAPI can be used to decode them,
multiple GPU hangs may happen. As the GPU hangs never stop, it's required to
use another system, start a SSH session and restart LightDM to make the frozen
computer work again. Sometimes it may kept hanging for a long time until the
GPU hangs stop.

Stesps to reproduce:

1) Have a video that can be decoded using VAAPI;
2) Have GNOME MPV (probably MPV works too) configured to decode using VAAPI;
3) Play the video using GNOME MPV;
4) Let the video play until the GPU hangs start.

It is very complicated to recover the frozen machine without another computer,
but it is possible.

The attached file contain dmesg, the card0/error and MPV configuration that
reproduces this.

Processor: Intel Core i3-6100U;
Video: Intel HD Graphics 520;
Architecture: amd64;
Mesa:  19.3.0-devel (git-5a747306ce);
Kernel version: drm-tip (5.4.0-rc1-9300459553e8);
Distribution: Xubuntu 18.04.3 amd64.

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