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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - system hangs on xv ports exceeded"
href="https://bugs.freedesktop.org/show_bug.cgi?id=85974">85974</a>
</td>
</tr>
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<th>Summary</th>
<td>system hangs on xv ports exceeded
</td>
</tr>
<tr>
<th>Product</th>
<td>xorg
</td>
</tr>
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<th>Version</th>
<td>unspecified
</td>
</tr>
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<th>Hardware</th>
<td>x86-64 (AMD64)
</td>
</tr>
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<th>OS</th>
<td>Linux (All)
</td>
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<th>Status</th>
<td>NEW
</td>
</tr>
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<th>Severity</th>
<td>normal
</td>
</tr>
<tr>
<th>Priority</th>
<td>medium
</td>
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<th>Component</th>
<td>Driver/intel
</td>
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<th>Assignee</th>
<td>chris@chris-wilson.co.uk
</td>
</tr>
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<th>Reporter</th>
<td>lists@svrinformatica.it
</td>
</tr>
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<th>QA Contact</th>
<td>intel-gfx-bugs@lists.freedesktop.org
</td>
</tr></table>
<p>
<div>
<pre>xorg 1.16.1
xf86-video-intel 2.99.916
kernel 3.17.2
lspci | grep VGA
00:02.0 VGA compatible controller: Intel Corporation 4th Gen Core Processor
Integrated Graphics Controller (rev 06)
xvinfo
X-Video Extension version 2.2
screen #0
Adaptor #0: "Intel(R) Textured Video"
number of ports: 16
so I can have at most 16 xvideo ports
with 16 xvideo ports active if I request another one (using for example a
gstreamer pipeline or with vlc) the system hangs. I have no trace in dmesg.
I'm sure that with older chip (gen2) and with older drivers I simply get an
error message saying that a new xvideo window cannot be open. This seems better
than a system hangs :-)
Can I ask why there is such limit about xvideo ports? On my hw I can use a
gstreamer app that open 16 xvideo windows (xvimagesink) with 16 full hd video
(I send 1920x1080 yuv frame to 16 concurrent xvimagesink gstreamer plugin) but
I cannot open 17 xvideo windows showing 160x120 videos. What is the rationale
behind this?</pre>
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