I'm using Xubuntu 13.10 on a Samsung Series 9 NP900X3C. Recently, I get a buzzing noise on the speakers a while after turning it on. At first I suspected hardware faults - but then I turned down the "system sounds" in the pulse audio volume control, and that made it go away! I can listen to sound from any other source. I can also record the buzzing by selecting the monitor as default fallback under the input devices.
What's the matter?
Edit: I used arecord to dump the noise to a file. I don't really know what to do with that, but looking at it of course the largest part isn't encoded characters. The parts that are, though, are either
a) chunks of lower-case letters
(or similar combinations of the same characters).
What the hell is going on?
Edit 2: After Google turned up some people having trouble with Pulse Audio and Skype, I quit Skype, and the noise is gone now. I had the sound turned down, though, so I don't actually know if that fixed it.
Edit 3: Confirmed, the noise returned and quitting Skype made it stop.