You want to run `pavucontrol` to see what's going on. Any audio playing app that *doesn't* show up there is not using PulseAudio and most likely blocking the audio device (this could be YT/Spotify in your case, if you don't have the above config).
-
-
Thanks. Twitter will use this to make your timeline better. UndoUndo
-
Loading seems to be taking a while.
Twitter may be over capacity or experiencing a momentary hiccup. Try again or visit Twitter Status for more information.