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<base href="https://bugs.freedesktop.org/">
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<body><table border="1" cellspacing="0" cellpadding="8">
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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - DC + TearFree display lock"
href="https://bugs.freedesktop.org/show_bug.cgi?id=100577">100577</a>
</td>
</tr>
<tr>
<th>Summary</th>
<td>DC + TearFree display lock
</td>
</tr>
<tr>
<th>Product</th>
<td>DRI
</td>
</tr>
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<th>Version</th>
<td>DRI git
</td>
</tr>
<tr>
<th>Hardware</th>
<td>Other
</td>
</tr>
<tr>
<th>OS</th>
<td>All
</td>
</tr>
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<th>Status</th>
<td>NEW
</td>
</tr>
<tr>
<th>Severity</th>
<td>normal
</td>
</tr>
<tr>
<th>Priority</th>
<td>medium
</td>
</tr>
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<th>Component</th>
<td>DRM/AMDgpu
</td>
</tr>
<tr>
<th>Assignee</th>
<td>dri-devel@lists.freedesktop.org
</td>
</tr>
<tr>
<th>Reporter</th>
<td>adf.lists@gmail.com
</td>
</tr></table>
<p>
<div>
<pre>Created <span class=""><a href="attachment.cgi?id=130688" name="attach_130688" title="dmesg with errors and trace">attachment 130688</a> <a href="attachment.cgi?id=130688&action=edit" title="dmesg with errors and trace">[details]</a></span>
dmesg with errors and trace
This one may be hard to reproduce for some as it seems to rely a bit on cpufreq
ondemand being a bit rubbish on my old cpu. Lowest is 800MHz for me (high 3.4
GHz).
I don't use a compositing desktop and vids played in my browser (seamonkey)
don't get vsync.
Turning on TearFree gets me vsync, but while testing I got a screen lock. Seems
to involve timing luck - I couldn't reproduce with the browser in a sane
timescale so invented a different test that could run while AFK.
mpv -fs --vo=x11 a720p60video --loop=inf
Will usually lock in < 15 minutes with cpufreq ondemand.
It was still going after an hour with cpufreq set to perf.
Also seems OK with amdgpu.dc=0 on same kernel = amd-staging-4.9
As I've only recently started running DC, and never tried this test before, I
have no idea whether it ever worked.
xserver is latest release ddx is git.
dmesg attached shows errors and a trace starting with
[ 2009.442985] [drm:drm_atomic_helper_commit_cleanup_done [drm_kms_helper]]
*ERROR* [CRTC:39:crtc-0] flip_done timed out
[ 2013.027575] [drm:drm_atomic_helper_wait_for_dependencies [drm_kms_helper]]
*ERROR* [CRTC:39:crtc-0] flip_done timed out
[ 2013.027727] [drm:amdgpu_dm_atomic_commit_tail [amdgpu]] *ERROR*
dm_dc_surface_commit: acrtc 0, already busy</pre>
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