I freshly installed yesterday, and I'm running into an issue with Cinnamon. When I go into the Cinnamon sound settings, output volume is greyed out. No GUI applications seem to be able to access the audio either. However, when I do a speaker test, it plays the sound just fine and I've checked alsamixer to ensure that all the channels are unmuted.
Check alsamixer again by running
Are you running them as users in the audio group? What happens when you run the media players as root?
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