[Bug 101884] New: GPU HANG in kscreenlocker_g

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=101884

            Bug ID: 101884
           Summary: GPU HANG in kscreenlocker_g
           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: solitone at mail.com
        QA Contact: intel-gfx-bugs at lists.freedesktop.org
                CC: intel-gfx-bugs at lists.freedesktop.org

Created attachment 132846
  --> https://bugs.freedesktop.org/attachment.cgi?id=132846&action=edit
GPU crash dump

Happens right after resume from hibernate: after some minutes, the graphical
login screen appears, the mouse pointer is visible and moving, but it's not
possible to do anything on that login screen. It's possible to switch to a
virtual console and do a textual login, though.

Details:

* Laptop: Apple MacBookPro 12,1
* kernel 4.9.30
* Distribution: Debian 9 (Stretch)

~$ lspci  -v -s  $(lspci | grep ' VGA ' | cut -d" " -f 1)
00:02.0 VGA compatible controller: Intel Corporation Iris Graphics 6100 (rev
09) (prog-if 00 [VGA controller])
        Subsystem: Apple Inc. Iris Graphics 6100
        Flags: bus master, fast devsel, latency 0, IRQ 53
        Memory at c0000000 (64-bit, non-prefetchable) [size=16M]
        Memory at b0000000 (64-bit, prefetchable) [size=256M]
        I/O ports at 3000 [size=64]
        [virtual] Expansion ROM at 000c0000 [disabled] [size=128K]
        Capabilities: <access denied>
        Kernel driver in use: i915
        Kernel modules: i915


Kernel logs:

Jul 23 08:00:10 alan kernel: [drm] GPU HANG: ecode 8:0:0x980e800f, in
kscreenlocker_g [27962], reason: Hang on render ring, action: reset
Jul 23 08:00:10 alan kernel: [drm] GPU hangs can indicate a bug anywhere in the
entire gfx stack, including userspace.
Jul 23 08:00:10 alan kernel: [drm] Please file a _new_ bug report on
bugs.freedesktop.org against DRI -> DRM/Intel
Jul 23 08:00:10 alan kernel: [drm] drm/i915 developers can then reassign to the
right component if it's not a kernel issue.
Jul 23 08:00:10 alan kernel: [drm] The gpu crash dump is required to analyze
gpu hangs, so please always attach it.
Jul 23 08:00:10 alan kernel: [drm] GPU crash dump saved to
/sys/class/drm/card0/error
Jul 23 08:00:10 alan kernel: drm/i915: Resetting chip after gpu hang
Jul 23 08:00:21 alan kernel: drm/i915: Resetting chip after gpu hang
Jul 23 08:00:32 alan kernel: drm/i915: Resetting chip after gpu hang
Jul 23 08:00:43 alan kernel: drm/i915: Resetting chip after gpu hang

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