I have had sound working for months but recently I plugged in a USB headset and to get it to work, I had to open pulse audio and change to it. I later unplugged it, turned off the computer and have now restarted it (without the headset) and now I get no sound through the computer speakers!
I used the Pulse Audio manager that shows up in the taskbar when you select it from the Kickoff Launcher.
But now it’s showing “Null Audio” and under “Sound” it shows “Audio Devices: NOT ENABLED IN CONFIG”
Under System Settings -> Multimedia, it lists Pulse Audio Sound Server.
Under PulseAudio Manager ->Devices tab it has Null Output as the only device.
What do I do?