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I recently performed a clean install of Ubuntu 12.04.5 to cure a few problems, including only having 'dummy output' for sound. After re-install the sound worked fine right up until I installed Gnome 3 on my desktop. After that, sound settings listed only dummy output for a sound card. Using alsa-mixer from the command line shows the proper sound card, but I still could not get any sound from the speakers. I tried updating the alsa drivers, with no luck. I also purged the Gnome ppa from the computer, uninstalled Gnome, and still had the same problem. I had to re-install Ubuntu again to get the sound card working. I would appreciate any help on this since I much prefer the Gnome desktop to Unity.

Mike Key
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  • do you have a file /etc/pulse/default.pa? if not see here http://askubuntu.com/a/225499/167115 – mchid Dec 16 '14 at 05:15
  • I do have /etc/pulse/default.pa, but I have recently re-loaded Ubuntu and have not installed the Gnome desktop yet so I can keep the audio working. – Mike Key Dec 16 '14 at 23:20
  • Apparently losing the sound card is not Gnome's fault. I just rebooted my computer, and I am only showing dummy output now for sound. Have not made any changes, and it was working earlier. – Mike Key Dec 17 '14 at 00:50
  • see if any of these help http://askubuntu.com/questions/294016/no-sound-in-ubuntu-13-04-only-dummy-output-device-listed – mchid Dec 18 '14 at 20:56
  • and try sudo modprobe snd-hda-intel – mchid Dec 18 '14 at 20:58
  • this might help http://itsfoss.com/fix-sound-ubuntu-1304-quick-tip/ and http://askubuntu.com/questions/491346/how-do-i-get-my-sound-working – mchid Dec 18 '14 at 21:01
  • sudo service pulseaudio stop then sudo alsa force reload and finally sudo service pulseaudio start – mchid Dec 18 '14 at 21:03
  • I had tried the pulseaudio stop, force reload and pulseaudio start before without success, but I just tried the modprobe snd-hda-intel, and that one worked. Thank you very much. That saves me from having to start windows for school work. – Mike Key Dec 20 '14 at 13:24

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