First, make sure that your user is not already in the audio group: # id mark If you're not in the audio group already, use gpasswd to add yourself: # gpasswd -a mark audio Take a look at the man-pages for 'id' and 'gpasswd': man id man gpasswd HTHSumo
Thanks, that worked. I now get sound from KDE, Gnome, and other applications without seeing the "device not found, using null output device instead" message.