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<b><a class="bz_bug_link
bz_status_NEW "
title="NEW --- - [HSW ULT]igt/kms_flip/flip-vs-panning-vs-hang-interruptible causes "[drm] stuck on render ring""
href="https://bugs.freedesktop.org/show_bug.cgi?id=69747#c9">Comment # 9</a>
on <a class="bz_bug_link
bz_status_NEW "
title="NEW --- - [HSW ULT]igt/kms_flip/flip-vs-panning-vs-hang-interruptible causes "[drm] stuck on render ring""
href="https://bugs.freedesktop.org/show_bug.cgi?id=69747">bug 69747</a>
from <span class="vcard"><a class="email" href="mailto:przanoni@gmail.com" title="Paulo Zanoni <przanoni@gmail.com>"> <span class="fn">Paulo Zanoni</span></a>
</span></b>
<pre>(In reply to <a href="show_bug.cgi?id=69747#c0">comment #0</a>)
<span class="quote">> Created <span class=""><a href="attachment.cgi?id=86433" name="attach_86433" title="dmesg">attachment 86433</a> <a href="attachment.cgi?id=86433&action=edit" title="dmesg">[details]</a></span>
> dmesg
>
> System Environment:
> --------------------------
> Platform: Haswell ULT
> Kernel: (drm-intel-next-queued)1b068ee25776533074251f1c6276c5f720c0284b
>
> Bug detailed description:
> -----------------------------
> It causes <3>[ 326.885041] [drm:intel_uncore_check_errors] *ERROR*
> Unclaimed register before interrupt. It happens on haswell ULT with
> -queued,-fixes and -nightly kernel. I can't find out a good commit.
>
> output:
> Using monotonic timestamps
> Beginning flip-vs-panning-vs-hang-interruptible on crtc 3, connector 10
> 1920x1080 60 1920 1966 1996 2080 1080 1082 1086 1112 0xa 0x48 138780
> ...
> flip-vs-panning-vs-hang-interruptible on crtc 3, connector 10: PASSED
>
> Beginning flip-vs-panning-vs-hang-interruptible on crtc 5, connector 10
> 1920x1080 60 1920 1966 1996 2080 1080 1082 1086 1112 0xa 0x48 138780
> ...
> flip-vs-panning-vs-hang-interruptible on crtc 5, connector 10: PASSED
>
> Beginning flip-vs-panning-vs-hang-interruptible on crtc 7, connector 10
> 1920x1080 60 1920 1966 1996 2080 1080 1082 1086 1112 0xa 0x48 138780
> ...
> flip-vs-panning-vs-hang-interruptible on crtc 7, connector 10: PASSED
>
> Subtest flip-vs-panning-vs-hang-interruptible: SUCCESS
>
> Reproduce steps:
> ----------------------------
> 1. ./kms_flip --run-subtest flip-vs-panning-vs-hang-interruptible</span >
Can you please reproduce the bug again and attach the error state?
Whenever you see a dmesg with "[ 158.798928] [drm] capturing error event; look
for more information in /sys/class/drm/card0/error", please attach the error
state.
Thanks,
Paulo</pre>
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