Lennart Poettering schrieb: > Play around with both pavucontrol and all volume controls there, as > well as "alsamixer -c0". OK, that was wrong: the level for " IEC958 P" was on 0, I found it with alsamixer. > > Do you have multiple sound cards/devices? What is the contents of /proc/snd/pcm? onboard sound: lspci | grep audio 00:04.0 Multimedia audio controller: nVidia Corporation CK804 AC'97 Audio Controller (rev a2) I have no idea what set this value to 0. As I told before: it happend when I switched from one player (totem) to another (vlc) - only seconds. I definitly did not change a mixer value at that moment intentionaly. Thanks for your patience. J?erg