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<b><a class="bz_bug_link
bz_status_NEW "
title="NEW - Stability issue in i915 with transcode operation"
href="https://bugs.freedesktop.org/show_bug.cgi?id=110450#c3">Comment # 3</a>
on <a class="bz_bug_link
bz_status_NEW "
title="NEW - Stability issue in i915 with transcode operation"
href="https://bugs.freedesktop.org/show_bug.cgi?id=110450">bug 110450</a>
from <span class="vcard"><a class="email" href="mailto:svetlana.emelianova@intel.com" title="Emelianova Svetlana <svetlana.emelianova@intel.com>"> <span class="fn">Emelianova Svetlana</span></a>
</span></b>
<pre>I added drm.debug=0xe parameter
<span class="quote">>> cat /proc/cmdline</span >
\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
<span class="quote">>> dmesg -e </span >
[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</pre>
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