Public bug reported:
OS: Ubuntu 14.04.4 LTS
pulseaudio-version: 1:4.0-0ubuntu11.1
unity-control-center-version: 14.04.3+14.04.20150916-0ubuntu1
I have with my system the common problem of exchanged center- and LFE-channels,
so I had to change the channel-mapping in
/usr/share/pulseaudio/alsa-mixer/profile-sets/extra-hdmi.conf (exchanging
front-center and lfe for 5.1 and 7.1).
Now the channels are mapped correct (tested using speakertest),
but the subwoofer-slider still controls the level of the front-center-speaker.
(It did also with default channel mapping.)
It seems the subwoofer-slider doesn't respect the channel-mapping.
Additional information (workaround):
This one I also could fix for the GUI of the sound settings by exchanging
[Element LFE] and [Element CENTER] in
/usr/share/pulseaudio/alsa-mixer/paths/analog-output.conf,
but now it is exchanged in the alsa-mixer (but this one I don't really use).
** Affects: pulseaudio (Ubuntu)
Importance: Undecided
Status: New
** Affects: unity-control-center (Ubuntu)
Importance: Undecided
Status: New
** Tags: alsa pulseaudio unity-control-center
** Also affects: pulseaudio (Ubuntu)
Importance: Undecided
Status: New
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https://bugs.launchpad.net/bugs/1592517
Title:
[sound] Subwoofer slider changes center volume not LFE
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