[Bug 85014] New: X crashes (black screens) on any use of DRM

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=85014

            Bug ID: 85014
           Summary: X crashes (black screens) on any use of DRM
           Product: DRI
           Version: XOrg CVS
          Hardware: x86-64 (AMD64)
                OS: Linux (All)
            Status: NEW
          Severity: major
          Priority: medium
         Component: DRM/Intel
          Assignee: intel-gfx-bugs at lists.freedesktop.org
          Reporter: wiljohnson at gmail.com
        QA Contact: intel-gfx-bugs at lists.freedesktop.org
                CC: intel-gfx-bugs at lists.freedesktop.org

Created attachment 107831
  --> https://bugs.freedesktop.org/attachment.cgi?id=107831&action=edit
dump file referenced in dmesg output /sys/class/drm/card0/error

Firefox, Chrome, any other app that uses video DRM crashes X on ubuntu running
gnome-shell.

[43503.816040] [drm] stuck on render ring
[43503.816048] [drm] GPU crash dump saved to /sys/class/drm/card0/error
[43503.816050] [drm] GPU hangs can indicate a bug anywhere in the entire gfx
stack, including userspace.
[43503.816052] [drm] Please file a _new_ bug report on bugs.freedesktop.org
against DRI -> DRM/Intel
[43503.816054] [drm] drm/i915 developers can then reassign to the right
component if it's not a kernel issue.
[43503.816056] [drm] The gpu crash dump is required to analyze gpu hangs, so
please always attach it.
[43503.817210] [drm:i915_set_reset_status] *ERROR* render ring hung inside bo
(0xfff3000 ctx 0) at 0xfff3c90
[43503.876054] [drm] GMBUS [i915 gmbus vga] timed out, falling back to bit
banging on pin 2
[43504.328060] [drm:i915_reset] *ERROR* Failed to reset chip.

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