i915 GPU hang in Blender

While working in Blender sometimes screen freezes and only killing Xorg helps. I tried to build a kernel from drmtip, the problem persists.

uname -a:

Linux upl 5.11.0-c1991e1c98 #202102142330+drmtip SMP Sun Feb 21 16:53:01 EET 2021 x86_64 x86_64 x86_64 GNU/Linux

• Distro: Ubuntu 20.10
• Display connector: HDMI
• dmesg:

[263779.122755] i915 0000:00:02.0: [drm] Resetting rcs0 for preemption time out
[263779.122773] i915 0000:00:02.0: [drm] blender[402202] context reset due to GPU hang
[263779.164349] i915 0000:00:02.0: [drm] GPU HANG: ecode 9:1:85df9ebf, in blender [402202]

dmidecode.bz2 error.bz2

changed the description

Hi, I had the same problem in this thread: #2935 (closed)

It looks like, that this workaround works for me:

/sys/class/drm/card0/engine/rcs0/preempt_timeout_ms file. Trying to increase the state to 10000

and run blender with

INTEL_DEBUG=reemit blender

Now I'm testing it and it looks promising.

Thanks, I'll check it

OK, it seems that Petr's solution worked for me with the last kernel, I haven't encountered the GPU hang for a long time, so I'm closing the issue for now.

closed