Not sure what happened, sound was working at then suddenly stopped. It’s not muted and if I go in to PulseAudio I can see the decibel meter moving. Happens in browser or when playing audio using rhythmbox. Continues after restart. Not playing through speakers or headphones. What should I be checking?
I had the same or similar audio issue recently. I didn’t know what to do and just messed around with settings until the sound came back. My OS is Ubuntu 16.04 and I was trying to play a movie with VLC at the time.
I had exactly the same problem. The sound worked when my new Librem 15 first arrived, but stopped sometime after (when I was tinkering). It took a while to sort out, but after confirming the sound hardware was recognized by the OS with the “lspci”, I dug into the Debian and Ubuntu wikis for more info (https://wiki.debian.org/SoundConfiguration and https://help.ubuntu.com/community/SoundTroubleshootingProcedure) . Ultimately, running the adduser command in the Debian page solved my problem.
thanks for this. mine seemed to come back on it’s own just as mysteriously as it went away. But will keep this in mind if it happens again.