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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - [N56VZ, Realtek ALC663, Black Headphone Out, Right] No sound from Subwoofer in 2.1 mode"
href="https://bugs.freedesktop.org/show_bug.cgi?id=91568">91568</a>
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<th>Summary</th>
<td>[N56VZ, Realtek ALC663, Black Headphone Out, Right] No sound from Subwoofer in 2.1 mode
</td>
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<th>Product</th>
<td>PulseAudio
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<th>Version</th>
<td>unspecified
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<th>Hardware</th>
<td>x86-64 (AMD64)
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<th>OS</th>
<td>Linux (All)
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<th>Status</th>
<td>NEW
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<th>Severity</th>
<td>normal
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<th>Priority</th>
<td>medium
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<th>Component</th>
<td>alsa
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<th>Assignee</th>
<td>pulseaudio-bugs@lists.freedesktop.org
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<th>Reporter</th>
<td>jason.braddock.69@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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<pre>Hi,
I have a 2.1 sound system.
When I use the profile "stereo" in pusle audio volume control (Xubuntu 15.04),
the subwoofer outputs sound (but it is an incorrect track, sort of miwed with
right channel)
When I use profile "Analog surround 2.1", I get no sound at all from subwoofer.
An historical bug was opened on launchpad. There's a lot of history and
diffrent versions tested. Read from post #115 :
<a href="https://bugs.launchpad.net/ubuntu/+source/alsa-driver/+bug/1040873/comments/115">https://bugs.launchpad.net/ubuntu/+source/alsa-driver/+bug/1040873/comments/115</a>
Some logs:
$ cat /proc/asound/version
Advanced Linux Sound Architecture Driver Version k3.19.0-25-generic.
Pulse audio verbose log :
<a href="https://launchpadlibrarian.net/204577103/15_04_pulseverbose.log">https://launchpadlibrarian.net/204577103/15_04_pulseverbose.log</a>
pactl list sinks :
<a href="https://launchpadlibrarian.net/204577057/15_04_pactlListSinks.txt">https://launchpadlibrarian.net/204577057/15_04_pactlListSinks.txt</a>
Feel free to ask for more tests.
Regards</pre>
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