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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - [OS X] (USB) sink/source names are meaningless and vary across pulseaudio restarts"
href="https://bugs.freedesktop.org/show_bug.cgi?id=88941">88941</a>
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<th>Summary</th>
<td>[OS X] (USB) sink/source names are meaningless and vary across pulseaudio restarts
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<th>Product</th>
<td>PulseAudio
</td>
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<th>Version</th>
<td>unspecified
</td>
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<th>Hardware</th>
<td>Other
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<th>OS</th>
<td>Mac OS X (All)
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<th>Status</th>
<td>NEW
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<th>Severity</th>
<td>major
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<th>Priority</th>
<td>medium
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<th>Component</th>
<td>misc
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<th>Assignee</th>
<td>pulseaudio-bugs@lists.freedesktop.org
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<th>Reporter</th>
<td>rjvbertin@gmail.com
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<th>QA Contact</th>
<td>pulseaudio-bugs@lists.freedesktop.org
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<th>CC</th>
<td>lennart@poettering.net
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<p>
<div>
<pre>Created <span class=""><a href="attachment.cgi?id=113100" name="attach_113100" title="pacmd list-sinks > pacmd-list-sinks-1.log">attachment 113100</a> <a href="attachment.cgi?id=113100&action=edit" title="pacmd list-sinks > pacmd-list-sinks-1.log">[details]</a></span>
pacmd list-sinks > pacmd-list-sinks-1.log
On OS X, pulseaudio attributes human-unreadable names to the sinks and sources
it detects, and in addition to that, they vary across restarts for USB sound
devices. They may also vary for other external sound devices (FireWire), but I
don't have any way to test that.
The attachments highlight the issue: they are the output of `pacmd list-sinks`
for 2 consecutive runs of `pulseaudio -C`:
<span class="quote">> pulseaudio -C
> pacmd list-sinks > pacmd-list-sinks-1.log
> pulseaudio -C
> pacmd list-sinks > pacmd-list-sinks-2.log
> pacmd list-sources > pacmd-list-sources-2.log
> pulseaudio -C
> pacmd list-sinks > pacmd-list-sinks-3.log
> pacmd list-sources > pacmd-list-sources-3.log</span >
The implications are clear: it's impossible to set a default sink and/or source
persistently, other than to the internal devices.</pre>
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