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<b><a class="bz_bug_link
bz_status_NEW "
title="NEW - 4.4.0-rc7: [drm] GPU HANG: ecode 6:-1:0x00000000, reason: Kicking stuck wait on render ring, action: continue"
href="https://bugs.freedesktop.org/show_bug.cgi?id=93710#c4">Comment # 4</a>
on <a class="bz_bug_link
bz_status_NEW "
title="NEW - 4.4.0-rc7: [drm] GPU HANG: ecode 6:-1:0x00000000, reason: Kicking stuck wait on render ring, action: continue"
href="https://bugs.freedesktop.org/show_bug.cgi?id=93710">bug 93710</a>
from <span class="vcard"><a class="email" href="mailto:mmokrejs@fold.natur.cuni.cz" title="Martin Mokrejs <mmokrejs@fold.natur.cuni.cz>"> <span class="fn">Martin Mokrejs</span></a>
</span></b>
<pre>(In reply to Chris Wilson from <a href="show_bug.cgi?id=93710#c3">comment #3</a>)
<span class="quote">> Hmm, the vsync region is right up to the last scanline (give or take the
> granularity). Do you see the error if you move the window off the bottom of
> the screen?</span >
I do not understand. I have just one screen, via HDMI to an external display.
The internal LVDS display of the laptop is disabled. I can only add that when I
leave my computer and turn off the external LCD, then after returning back and
turning on the external LCD power it has no signal and the laptop's LCD is
enabled. I have to use arandr to swap the outputs. I don't remember having to
use arandr for a while. Maybe some code is too eager to disable the HDMI
output? I would dare to guess that this (need to use arandr to re-enable HDMI
output) is a consequence of the GPU HANG, because I realized this only after
the GPU HANG.
<span class="quote">>
> Also the error state is reporting GPU page faults from the context and VT'd.
> A recent drm-intel-nightly kernel should fix the context fault, and can you
> try intel_iommu=off?</span >
I can after I reboot after some days.
<span class="quote">>
> Do you see the same error on older kernels?</span >
You can search bugzilla for my previous reports with GPU HANGs, I have no idea
which have the same traces. But with 4.3.0, 4.3.3, 3.18.xx I did not see it.</pre>
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