After upgrading from Lucid, the system was unable to reproduce sound. Even "yes > /dev/dsp" had no effect.
For some strange reason, alsamixer showed all channels to be muted while KDE's mixer didn't – But that turned out not to be the problem. Correcting that had no effect.
However, the problem was solved by doing the following:
rm -rf ~/.pulse*
killall -HUP pulseaudio
Whatever it is that's confusing Pulseaudio should be deleted or renamed upon every upgrade.
Binary package hint: pulseaudio
After upgrading from Lucid, the system was unable to reproduce sound. Even "yes > /dev/dsp" had no effect.
For some strange reason, alsamixer showed all channels to be muted while KDE's mixer didn't – But that turned out not to be the problem. Correcting that had no effect.
However, the problem was solved by doing the following:
rm -rf ~/.pulse*
killall -HUP pulseaudio
Whatever it is that's confusing Pulseaudio should be deleted or renamed upon every upgrade.