New answers tagged alsa
You need to run xfce4-volumed with applied pulse audio patches. Please be aware that with the deprecation of gstreamer0.10 and its mixer interface in favor of gst1.0, xfce4-mixer and xfce4-volumed became deprecated. Use xfce4-pulseaudio-plugin and pavucontrol instead.
You can use pavucontrol to set the default (and fallback) audio output device. But this needs pulseaudio (one of the reasons pulse was developed).
Try a newer kernel You can get 3.16 from backports: Add the line deb http://http.debian.net/debian wheezy-backports main to /etc/apt/sources.list. Then run aptitude update aptitude -t wheezy-backports install linux-image-3.16.0-0.bpo.4-amd64 and reboot. Debugging ALSA Get the script http://www.alsa-project.org/alsa-info.sh and run it to get ...
Debian 7 "wheezy" was released in may 2013, with a kernel released early 2012. If your sound hardware is more recent than that, it is possible that it just isn't supported by Debian 7. Have you tried with Debian 8 "Jessie"?
Not sure about PulseAudio, but this thing always was glitchy for me so I stick to just Alsa now. I googled a bit and you might need http://freedesktop.org/software/pulseaudio/pavucontrol/ to make it work. There is a known bug where amixer doesn't affect xfce4-mixer, and pavucontrol most likely patches it.
This was a problem on Debian Wheezy, when I upgraded to Jessie the issue went away.
I had this problem on a program that I was using, to fix it I downloaded a new sound driver. There are a lot of drivers, I use ASIO4ALL v2 I like it but it is for a program and the program itself launches it. it isn't default, so make sure you set it up like you want it. sorry if this doesn't help
On my system I get amixer -c MID sget Capture Simple mixer control 'Capture',0 Capabilities: cvolume cswitch Capture channels: Front Left - Front Right Limits: Capture 0 - 46 Front Left: Capture 42 [91%] [25.00dB] [on] Front Right: Capture 42 [91%] [25.00dB] [on] amixer -c MID sset Capture 23 Simple mixer control 'Capture',0 Capabilities: ...
The file /usr/share/pulseaudio/alsa-mixer/paths/analog-output.conf.common contains all the explanations and the basic settings on how pulseaudio will tinker with Alsa Mixer settings.
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