[Bug 99057] non-recoverable hang/freeze following WARNING: CPU: 3 PID: 783 at drivers/gpu/drm/i915/intel_display.c:14189 intel_atomic_commit_tail+0xfd0/0xff0 [i915]

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=99057

yann <yann.argotti at intel.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
           Keywords|                            |regression
      i915 features|                            |GPU hang
      i915 platform|                            |SKL
             Status|NEW                         |NEEDINFO

--- Comment #6 from yann <yann.argotti at intel.com> ---
(In reply to bugzilla from comment #5)
> First instance in the journal there's a problem...
> 
> [31603.149518] f25h kernel: [drm] GPU HANG: ecode 9:0:0xfffffffe, in
> gnome-shell [7105], reason: Hang on render ring, action: reset
> 
> That comes before the cell phone photo; and the journal goes to
> [31723.152073] at which point there's a total crash and call trace. So it
> doesn't look like much information was lost in the log itself; but there was
> no way to get the GPU crash dump saved to /sys/class/drm/card0/error.

bugzilla at colorremedies.com, it could be really interesting to get this error
crash dump. Moreover, it will  useful, if you can enable a more verbose log for
drm by setting "drm.debug=0x1e log_buf_len=1M" in your boot command line and
then attached the kernel log (after issue is happening again).

I may also recommend that you use latest firmware (GuC loading is indicated as
skipped in your kernel log) ;  you can download directly from
https://01.org/linuxgraphics/intel-linux-graphics-firmwares

You may have a try by using "i915.enable_rc6=0" in your boot command line and
see if this issue is still occurring.

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