[Bug 101533] New: [SKL] drm/i915: Resetting chip after gpu hang with webgl

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=101533

            Bug ID: 101533
           Summary: [SKL] drm/i915: Resetting chip after gpu hang with
                    webgl
           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: joel.stan at gmail.com
        QA Contact: intel-gfx-bugs at lists.freedesktop.org
                CC: intel-gfx-bugs at lists.freedesktop.org

Created attachment 132110
  --> https://bugs.freedesktop.org/attachment.cgi?id=132110&action=edit
/sys/class/drm/card0/error

Running Ubuntu's 4.11.0-6-generic kernel, whenever Facebook loads a webGL
widget in Google Chrome my screen locks up for a few seconds. When it comes
back, Chrome reports that webGL has crashed and I see this in the kernel log:

[121807.432832] drm/i915: Resetting chip after gpu hang
[121807.433343] [drm] RC6 on
[121807.448255] [drm] GuC firmware load skipped
[121819.496336] drm/i915: Resetting chip after gpu hang
[121819.496482] [drm] RC6 on
[121819.516308] [drm] GuC firmware load skipped

I've attached the contents of /sys/class/drm/card0/error.

i915 bits from boot up:

i915 0000:00:02.0: enabling device (0006 -> 0007)
[drm] Finished loading DMC firmware i915/skl_dmc_ver1_26.bin (v1.26)
i915 0000:00:02.0: vgaarb: changed VGA decodes:
olddecodes=io+mem,decodes=io+mem:owns=mem
[drm] Initialized i915 1.6.0 20170123 for 0000:00:02.0 on minor 0
[drm] Initialized i915 1.6.0 20170123 for 0000:00:02.0 on minor 0
i915 0000:00:02.0: fb0: inteldrmfb frame buffer device

The machine is a 4th gen X1 carbon, running Lenovo's N1FET50W (1.24) firmware.

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