[Bug 91076] New: Repeated GPU hangs with Linux 4.1 on i5-5300U graphics

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=91076

            Bug ID: 91076
           Summary: Repeated GPU hangs with Linux 4.1 on i5-5300U graphics
           Product: DRI
           Version: unspecified
          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: michael at michaelmarley.com
        QA Contact: intel-gfx-bugs at lists.freedesktop.org
                CC: intel-gfx-bugs at lists.freedesktop.org

Created attachment 116675
  --> https://bugs.freedesktop.org/attachment.cgi?id=116675&action=edit
Contents of /sys/class/drm/card0/error

Since upgrading my Intel NUC5i5MYHE with the Core i5-5300U CPU from Linux
kernel 4.0.5 to Linux kernel 4.1.0, I now get repeated GPU hangs about every 6
seconds starting immediately after boot.  I have attached both the dmesg output
showing the hang messages and the contents of /sys/class/drm/card0/error, as
requested by the first hang message.

This is a headless system and does not have Xorg installed or running (only the
framebuffer console is active).  The "monitor" attached is a dummy display
simulator dongle attached to a Mini DisplayPort to HDMI connector and not a
real monitor.  Plugging in a real (DVI) monitor using another adapter yields
the same hangs, as does plugging in no monitor at all.  While the real monitor
is attached, I can detect the GPU hangs as jerkiness in display updates, but
the console is still usable.

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