[Bug 99525] New: [SKL] GPU HANG: ecode 9:0:0x85dfbcfb, in siemcy [3440], reason: Hang on render ring, action: reset

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=99525

            Bug ID: 99525
           Summary: [SKL] GPU HANG: ecode 9:0:0x85dfbcfb, in siemcy
                    [3440], reason: Hang on render ring, action: reset
           Product: DRI
           Version: XOrg git
          Hardware: Other
                OS: All
            Status: NEW
          Severity: normal
          Priority: medium
         Component: DRM/Intel
          Assignee: intel-gfx-bugs at lists.freedesktop.org
          Reporter: bhatcher at oblong.com
        QA Contact: intel-gfx-bugs at lists.freedesktop.org
                CC: intel-gfx-bugs at lists.freedesktop.org

Created attachment 129132
  --> https://bugs.freedesktop.org/attachment.cgi?id=129132&action=edit
GPU crash dump file

Bug description: Having random reboot issues with the system, but usually not
accompanied by this GPU hang. Dual displays running @ 4k60. After the random
reboots, both displays work during boot but DP1 does not display once X has
loaded.

[68833.361334] [drm] GPU HANG: ecode 9:0:0x85dfbcfb, in siemcy [3440], reason:
Hang on render ring, action: reset
[68833.361335] [drm] GPU hangs can indicate a bug anywhere in the entire gfx
stack, including userspace.
[68833.361335] [drm] Please file a new bug report on bugs.freedesktop.org
against DRI -> DRM/Intel
[68833.361335] [drm] drm/i915 developers can then reassign to the right
component if it's not a kernel issue.
[68833.361335] [drm] The gpu crash dump is required to analyze gpu hangs, so
please always attach it.
[68833.361336] [drm] GPU crash dump saved to /sys/class/drm/card0/error
[68833.361351] drm/i915: Resetting chip after gpu hang
[68833.361405] [drm] RC6 on
[68833.373251] [drm] GuC firmware load skipped
[68844.433130] drm/i915: Resetting chip after gpu hang
[68844.433165] [drm] RC6 on
[68844.447297] [drm] GuC firmware load skipped

System Environment:
-- Chipset: Intel i7-6770HQ with Iris HD 580 GPU
-- Sys Architecture: 64-bit
-- xf86-video-intel: not installed
-- xserver: 1:7.7+13ubun / 2:1.18.4-0ub
-- mesa: 1:12.1~git16
-- libdrm: 2.4.71+git16
-- kernel: GNU/Linux 4.9.0-040900-generic x86_64
-- Linux Distro: Ubuntu 16.04.1 LTS
-- Machine Model: Intel Skull Canyon NUC (NUC6i7KYK)
-- Display connector: DP1 is mDP->HDMI, DP2 is HDMI

Reproducing steps: Unknown

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