Approx. start date
Dec 31, 1969
List of current issues
Ubuntu sound settings show "Dummy output" as audio (no driver installed)
alsamixer returns:
"cannot open mixer: no such file or directory"
Steps taken, but unsuccessful?
reinstall alsa and pulseaudio (succeeded but audio still not working)

advanced_skill

Level 3
Verified
alsa reload:
Code:
Unloading ALSA sound driver modules: (none loaded).
Loading ALSA sound driver modules: (none to reload).
 
S

Sr. Normal

Possibly you have a conflict between PulseAudio and Alsa

Remove all traces of Pulseaudio:
sudo cp /usr/share/alsa/alsa.conf /usr/share/alsa/alsa.conf.bak

Add repositories "gnome-media / applets / settings-daemon" to change the Sound Control Press by "gstreamer-based" (This is ideal for users who want OSS4 in GNOME) with:
sudo apt-add-repository ppa:dtl131/ppa

Install the following packages alsa with the following command:
sudo apt-get install esound esound-clients esound-common alsa-base alsa-tools alsa-utils alsa-oss linux-sound-base python-alsaaudio gnome-media libsdl1.2debian-alsa

Uninstalled pulseaudio the following packages with the following command:
sudo apt-get purge libcanberra-pulse pulseaudio pulseaudio-esound-compat pulseaudio-module-bluetooth pulseaudio-module-gconf pulseaudio-module-udev pulseaudio-module-x11 gstreamer0.10-pulseaudio pulseaudio-utils pavucontrol

reinstall Alsa:
sudo apt-get --purge reinstall linux-sound-base alsa-base alsa-utils linux-image-`uname -r` linux-ubuntu-modules-`uname -r` libasound2

reboot

With this we have eliminated the conflict between the two managers audio, leaving only Alsa. :)
-------------------------------------------EDIT----------------------------------------------------------------------

Maybe you just missing libraries so you can start with:
sudo apt-add-repository ppa:dtl131/ppa
sudo apt-get install esound esound-clients esound-common alsa-base alsa-tools alsa-utils alsa-oss linux-sound-base python-alsaaudio gnome-media libsdl1.2debian-alsa
sudo apt-get --purge reinstall linux-sound-base alsa-base alsa-utils linux-image-`uname -r` linux-ubuntu-modules-`uname -r` libasound2

This not uninstall anything and you make sure you have everything you need to work perfectly with Alsa
 
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