Comment 60 for bug 479296

I have the same bug, although I experience no difference whether music is being played or not. I suspect this has something to do with the NVIDIA driver and Karmic.

I use an HP DV5 Pavilion with NVIDIA 9600M GT and Ubuntu Karmic. Prior to Karmic I used 9.04 and everything was working fine. On Karmic, the screen would randomly flicker and sometimes freeze. This happens more often whenever I perform any activity which requires more work from the window manager - e.g. moving / opening windows. When the screen freezes, either the computer is completely non-responsive, or sometimes I can use CTRL-ALT-1 to escape it, then return to the normal display and it somehow causes a small temporary improvement. Sometimes, instead of freezing, the X server completely restarts and I get to the login screen.