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<body><span class="vcard"><a class="email" href="mailto:lakshminarayana.vudum@intel.com" title="Lakshmi <lakshminarayana.vudum@intel.com>"> <span class="fn">Lakshmi</span></a>
</span> changed
<a class="bz_bug_link
bz_status_NEW "
title="NEW - NON-GuC constant i915 0000:00:02.0: GPU HANG: ecode 9:1:0x00000000, hang on rcs0"
href="https://bugs.freedesktop.org/show_bug.cgi?id=111920">bug 111920</a>
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<table border="1" cellspacing="0" cellpadding="8">
<tr>
<th>What</th>
<th>Removed</th>
<th>Added</th>
</tr>
<tr>
<td style="text-align:right;">i915 features</td>
<td>
</td>
<td>GPU hang
</td>
</tr>
<tr>
<td style="text-align:right;">CC</td>
<td>
</td>
<td>mika.kuoppala@intel.com
</td>
</tr></table>
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<b><a class="bz_bug_link
bz_status_NEW "
title="NEW - NON-GuC constant i915 0000:00:02.0: GPU HANG: ecode 9:1:0x00000000, hang on rcs0"
href="https://bugs.freedesktop.org/show_bug.cgi?id=111920#c3">Comment # 3</a>
on <a class="bz_bug_link
bz_status_NEW "
title="NEW - NON-GuC constant i915 0000:00:02.0: GPU HANG: ecode 9:1:0x00000000, hang on rcs0"
href="https://bugs.freedesktop.org/show_bug.cgi?id=111920">bug 111920</a>
from <span class="vcard"><a class="email" href="mailto:lakshminarayana.vudum@intel.com" title="Lakshmi <lakshminarayana.vudum@intel.com>"> <span class="fn">Lakshmi</span></a>
</span></b>
<pre>(In reply to Kenneth C from <a href="show_bug.cgi?id=111920#c0">comment #0</a>)
<span class="quote">> Created <span class=""><a href="attachment.cgi?id=145678" name="attach_145678" title="/sys/class/drm/card0/error">attachment 145678</a> <a href="attachment.cgi?id=145678&action=edit" title="/sys/class/drm/card0/error">[details]</a></span>
> /sys/class/drm/card0/error
>
> In <a class="bz_bug_link
bz_status_RESOLVED bz_closed"
title="RESOLVED WORKSFORME - [CI][SHARDS] igt@gem_userptr_blits@readonly-unsync - fail - WARNING: CPU: 2 PID: 1202 at mm/filemap.c:220 unaccount_page_cache_page"
href="show_bug.cgi?id=111085">bug 111085</a> (<a class="bz_bug_link
bz_status_NEEDINFO "
title="NEEDINFO - Constant "Resetting rcs0 for hang on rcs0" and machine lockup"
href="show_bug.cgi?id=111805">https://bugs.freedesktop.org/show_bug.cgi?id=111805</a>)
> <a href="mailto:lakshminarayana.vudum@intel.com">lakshminarayana.vudum@intel.com</a> asked me to try running without the GuC
> enabled.
>
> I did that, and it's still hanging up. This is the DRM-tip right before
> commit c1132367 as that commit prevents my box from going into S0/s2idle
> suspend (see bug <a class="bz_bug_link
bz_status_NEW "
title="NEW - commit c1132367 "Extract GT render sleep (rc6) management" prevents entering s2idle"
href="show_bug.cgi?id=111909">https://bugs.freedesktop.org/show_bug.cgi?id=111909</a>).
>
> Here's the worst part- if I can wrench control to a VT, I can usually "sudo
> systemctl hibernate" to force a power-cycle that unwedges the i915- but THIS
> time, right after the resume:
>
> ----
> Oct 7 17:03:36 hp-x360n systemd-sleep[16719]: System resumed.
> Oct 7 17:03:36 hp-x360n systemd[1]: Stopping TLP suspend/resume...
> Oct 7 17:03:36 hp-x360n systemd[1]: Stopped TLP suspend/resume.
> Oct 7 17:04:40 hp-x360n kernel: [20868.899672] i915 0000:00:02.0: Resetting
> rcs0 for hang on rcs0
> Oct 7 17:05:16 hp-x360n kernel: [20904.931581] i915 0000:00:02.0: Resetting
> rcs0 for hang on rcs0
> Oct 7 17:07:04 hp-x360n kernel: [21012.899361] i915 0000:00:02.0: Resetting
> rcs0 for hang on rcs0
> ----
>
> <facepalm>
>
> The latest i915 changes on Sept 26th are really killing my workflow, as I
> can never tell when my laptop will just decide to hang up (and I can be
> doing such mundane tasks as viewing a webpage or building some software in a
> konsole- I don't game and this time I wasn't even watching video).
>
> Is there ANYTHING I can do to help you guys diagnose, mitigate, or warn me
> when it's likely to occur? I've posted some 7 .../card0/error files and
> apparently there's not enough info in these to help figure out what's going
> on. Are there any debug flags (that won't ruin daily-driver performance)
> that I can try so when this happens again there's more info?
>
> (Is there any way to just hack out a merge from a GIT tree?)</span >
Mika, any suggestions here?</pre>
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