After a reboot (cpu loaded at 100%, system freezed, reset button) my FC4 won't play any sound at all.
I checked alsa troubleshooting
but all seems ok, except that now I have only 5 slider in alsa mixer: bass, trebl, synth, pcm2 and digital1. Before the crash I have more controls, above all master volume slider.
In Windows all works fine. My guess is that some config file was lost because the hard reboot.