[Bug 101780] [SKL] GPU HANG: ecode 9:0:0x85dffffb, in Xorg [10945], reason: Hang on render ring, action: reset

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=101780

Elizabeth <elizabethx.de.la.torre.mena at intel.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
           Severity|normal                      |major
      i915 platform|                            |SKL
            Summary|GPU HANG: ecode             |[SKL] GPU HANG: ecode
                   |9:0:0x85dffffb, in Xorg     |9:0:0x85dffffb, in Xorg
                   |[10945], reason: Hang on    |[10945], reason: Hang on
                   |render ring, action: reset  |render ring, action: reset
      i915 features|                            |GPU hang
             Status|NEW                         |NEEDINFO

--- Comment #2 from Elizabeth <elizabethx.de.la.torre.mena at intel.com> ---
(In reply to Milan Bouchet-Valat from comment #0)
> Created attachment 132661 [details]
> /sys/class/drm/card0/error
> 
> I get this crash from time to time, without any clear way of reproducing it.
> I've seen it twice in a row today. I think it only happens when connecting
> an external monitor via a docking station (and turning off the built-in
> display).
Hello Milan, 
As you mention about the docking station, some supported features for MST
devices were added for kernel 4.12. Could you please change from 4.11 to 4.12
and try to reproduce the issue again:
https://www.kernel.org/
If the issue persist attach dmesg with parameter drm.debug=0xe on grub. 
> juil. 13 14:33:47 mob01772 /usr/libexec/gdm-x-session[10943]:
> intel_do_flush_locked failed: Input/output error
> [gdm-x-session modeset information]
> juil. 13 14:33:47 mob01772 kernel: [drm] GuC firmware load skipped
> juil. 13 14:33:47 mob01772 kernel: [drm] RC6 on
> juil. 13 14:33:47 mob01772 kernel: drm/i915: Resetting chip after gpu hang
Also you could try disabling the RC6 and see if it hangs again.
Once you provide more information, please change the tag from "NEEDINFO" to
"REOPEN". Thank you.

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