unmute Speaker mixer channel
Originally created by Tails on #5282 (Redmine)
Linux 3.2 adds a "Speaker" channel for some sound cards.
That channel has been there since forever for some cards.
The Debian Alsa initscript unmutes only a few channels. In alsa-utils 1.0.23-4 and later, the Speaker channel is unmuted.
Tails 0.10.x has been shipping alsa-utils 1.0.23-3, which mutes the Speaker channel. A user have been complaining about this, as Tails effectively mutes their sound card at boot time: Debian bug #603550.
We need to patch /usr/share/alsa/utils.sh
the same way alsa-utils
1.0.23-4 and later do.
Implemented, in branch
bugfix/unmute_alsa_speaker_channel
, done in Tails 0.11.I’m the bug reporter, you set the "Speaker" volume as 80. Doesn’t this mean 80 master x 80% speaker = 64% total volume? If I didn’t get it wrong it should be same for Headphones (80% x 80% = 64%). If so, please set the other channels at maximum and decrease the master if needed so we could change the volume only by controlling the master channel
Can anybody answer this?
All such mixer levels are set to 80% in the initscript shipped by the alsa-utils Debian package. Hardware is wired in many "interesting" ways, that may or may not satisfy the equation you’re guessing, so I doubt there’s any better general setting. I suggest you talk to the maintainers of the alsa-utils Debian package if you want to contribute to improve this area of Debian and Tails.