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<base href="https://bugs.freedesktop.org/" />
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<th>Priority</th>
<td>medium
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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW --- - Separate X screens --> Xvideo is vsynced to primary screen only"
href="https://bugs.freedesktop.org/show_bug.cgi?id=83021">83021</a>
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<th>Assignee</th>
<td>nouveau@lists.freedesktop.org
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<th>Summary</th>
<td>Separate X screens --> Xvideo is vsynced to primary screen only
</td>
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<th>QA Contact</th>
<td>xorg-team@lists.x.org
</td>
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<th>Severity</th>
<td>normal
</td>
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<th>Classification</th>
<td>Unclassified
</td>
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<th>OS</th>
<td>Linux (All)
</td>
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<th>Reporter</th>
<td>janjanjanx@gmail.com
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<th>Hardware</th>
<td>x86-64 (AMD64)
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<th>Status</th>
<td>NEW
</td>
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<th>Version</th>
<td>unspecified
</td>
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<th>Component</th>
<td>Driver/nouveau
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<th>Product</th>
<td>xorg
</td>
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<pre>I use two separate X screens and Xvideo is vsynced only to the primary display.
The DRM however supports syncing to secondary display as well (using
_DRM_VBLANK_SECONDARY).
I looked at the xf86-video-nouveau source, and it looks like it tries to
determine on wich display the window is by using the window position (in the
nv_window_belongs_to_crtc function). I think this method only works when there
is one X screen assembled of two displays, but it does not work with two
separate X screens.
Linux 3.15.10, Xorg 1.16, xf86-video-nouveu 1.0.10
GPU GTX 560Ti</pre>
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