European Wafaa

Strange thing happened earlier today on one of my 11.0 machines - PulseAudio decided it was no longer connected to any server and therefore I could get no sound other than system beeps

With thanks to Jigish Gohil I was able to return things to normality. Below are the steps I took to fix things, hopefully they will work for you too :

As root (either su - or sudo whichever floats your boat):
Get rid of PA's temp files rm -rf /tmp/pulse-*
Then kill any residual PA process killall -9 pulseaudio
Then restart the sound server rcalsasound restart

Then as the good ol' user start PA - pulseaudio&
When you start PA, the chances are you'll get some output similar to
W: core-util.c: setpriority(): Permission denied
E: pid.c: Daemon already running.
E: main.c: pa_pid_file_create() failed.

Don't Panic Captain Mannering This is quite normal You may now return to your listening pleasure.