[Bug 110450] Stability issue in i915 with transcode operation

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=110450

--- Comment #3 from Emelianova Svetlana <svetlana.emelianova at intel.com> ---
I added drm.debug=0xe parameter
>> cat /proc/cmdline
\boot\vmlinuz-4.19.5 root=LABEL=TARGET_OS ro vconsole.font=latarcyrheb-sun16
crashkernel=128M vconsole.keymap=us biosdevname=0 LANG=en_US.UTF-8
systemd.debug modprobe.blacklist=ast,mgag200 intel_pstate=disable
i915.enable_rc6=0 intel_idle.max_cstate=1 drm.debug=0xe
initrd=boot\initrd.img-4.19.5

dmesg after GPU hang
>> dmesg -e 
[Apr17 11:24] i915 0000:00:02.0: Resetting rcs0 for hang on rcs0
[  +0.001032] [drm:intel_gpu_reset [i915]] rcs0: timed out on STOP_RING
[  +0.000034] [drm:i915_gem_reset_engine [i915]] client mfx_transcoder[6254]/2:
gained 1 ban score, now 1
[  +4.031095] i915 0000:00:02.0: Resetting vcs0 for hang on vcs0
[  +0.001028] [drm:intel_gpu_reset [i915]] vcs0: timed out on STOP_RING
[  +0.000022] [drm:i915_gem_reset_engine [i915]] client mfx_transcoder[6254]/2:
gained 1 ban score, now 2

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