Ubuntu

Comment 77 for bug 352732

This issue may be a problem in pulseaudio. I managed to get it to work as expected by replacing the line

load-module module-device-restore

in /etc/pulse/default.pa with

#load-module module-device-restore

Perhaps you have to logout, kill all pulseaudio daemons, login, adjust volumes, logout and login again to see if it works.