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<base href="https://bugs.freedesktop.org/">
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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - [DRI3] Jerky video/low FPS"
href="https://bugs.freedesktop.org/show_bug.cgi?id=99854">99854</a>
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<th>Summary</th>
<td>[DRI3] Jerky video/low FPS
</td>
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<th>Product</th>
<td>xorg
</td>
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<th>Version</th>
<td>git
</td>
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<th>Hardware</th>
<td>Other
</td>
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<th>OS</th>
<td>All
</td>
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<th>Status</th>
<td>NEW
</td>
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<th>Severity</th>
<td>normal
</td>
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<th>Priority</th>
<td>medium
</td>
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<th>Component</th>
<td>Driver/intel
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<th>Assignee</th>
<td>chris@chris-wilson.co.uk
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<th>Reporter</th>
<td>hugo.chargois@free.fr
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<th>QA Contact</th>
<td>intel-gfx-bugs@lists.freedesktop.org
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<div>
<pre>Created <span class=""><a href="attachment.cgi?id=129731" name="attach_129731" title="Xorg.0.log, no problem occurring, smooth video">attachment 129731</a> <a href="attachment.cgi?id=129731&action=edit" title="Xorg.0.log, no problem occurring, smooth video">[details]</a></span>
Xorg.0.log, no problem occurring, smooth video
Xorg version: 1.19.1 (archlinux's package)
xf86-video-intel version: git's latest: 860c3664 (built from source)
uname -rm: 4.9.8-1-ARCH x86_64
lspci | grep VGA: 00:02.0 VGA compatible controller: Intel Corporation Xeon
E3-1200 v3/4th Gen Core Processor Integrated Graphics Controller (rev 06)
Video playback looks like it's very low FPS, maybe ~10FPS or less. It doesn't
look like a video acceleration problem, the CPU usage is still very small. It
looks like a refresh problem.
An interesting thing is that the problem disappears as long as the mouse is
moving, as if it forces a high refresh rate. It reappears as soon as the mouse
is still.
The problem doesn't happen when I set
Option "DRI" "2"
in the config.
I also set Option "TearFree" "true" but I don't think it makes any difference,
the problem also happens without TearFree (with DRI3).
I don't have compton or any other compositor.</pre>
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