[Bug 76039] New: stuck on render ring at seemingly random moments. Hangs for a few seconds, and then continues with glitches

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=76039

          Priority: medium
            Bug ID: 76039
                CC: intel-gfx-bugs at lists.freedesktop.org
          Assignee: intel-gfx-bugs at lists.freedesktop.org
           Summary: stuck on render ring at seemingly random moments.
                    Hangs for a few seconds, and then continues with
                    glitches
        QA Contact: intel-gfx-bugs at lists.freedesktop.org
          Severity: major
    Classification: Unclassified
                OS: Linux (All)
          Reporter: robert2505 at gmail.com
          Hardware: x86-64 (AMD64)
            Status: NEW
           Version: XOrg 6.7.0
         Component: DRM/Intel
           Product: DRI

Created attachment 95614
  --> https://bugs.freedesktop.org/attachment.cgi?id=95614&action=edit
Dump from /sys/class/drm/card1/error

The system hangs for a few seconds, then dmesg spews this:

[  197.405192] [drm] GPU crash dump saved to /sys/class/drm/card1/error
[  197.405193] [drm] GPU hangs can indicate a bug anywhere in the entire gfx
stack, including userspace.
[  197.405194] [drm] Please file a _new_ bug report on bugs.freedesktop.org
against DRI -> DRM/Intel
[  197.405195] [drm] drm/i915 developers can then reassign to the right
component if it's not a kernel issue.
[  197.405196] [drm] The gpu crash dump is required to analyze gpu hangs, so
please always attach it.
[  203.441104] [drm] stuck on render ring

And the system continues.

Untill reboot random glitches (mostly white bars and blacked out textboxes)
appear

Also, around the time this started happening, bumblebee started rendering black
windows when using Primus as a bridge. VirtualGL looks normal.

Primus can be fixed by setting environment variable PRIMUS_UPLOAD=1

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