[pulseaudio-tickets] [Bug 54673] master volume at zero and muted when pulseaudio starts

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=54673

--- Comment #3 from Tanu Kaskinen <tanuk at iki.fi> 2012-09-09 06:35:51 UTC ---
Pulseaudio seems to remove the "analog-output" path, because it appears to be a
subset of "analog-output-mono". "analog-output-mono" is then chosen as the
active path, and it mutes the Master element, because it thinks that Master
Mono (also available) is the right element to use.

It appears that Master Mono has volume control for two channels. That seems
strange, I wonder if this is an alsa bug? If it had only one channel, as would
be logical, then I believe the "analog-output" path wouldn't be considered a
subset of "analog-output-mono", and things would work for you.

But there's another odd thing: why is "analog-output-mono" path part of the
"analog-stereo" mapping at all? That doesn't make sense to me. Removing the
path from the "analog-stereo" mapping should also make things work for you.

So, try editing /usr/share/pulseaudio/alsa-mixer/profile-sets/extra-hdmi.conf.
There's this section:

[Mapping analog-stereo]
device-strings = front:%f hw:%f
channel-map = left,right
paths-output = analog-output analog-output-speaker
analog-output-desktop-speaker analog-output-headphones
analog-output-headphones-2 analog-output-mono analog-output-lfe-on-mono
paths-input = analog-input-front-mic analog-input-rear-mic
analog-input-internal-mic analog-input-dock-mic analog-input analog-input-mic
analog-input-linein analog-input-aux analog-input-video analog-input-tvtuner
analog-input-fm analog-input-mic-line analog-input-headphone-mic
priority = 10

Remove analog-output-mono from the paths-output line.

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