I already tried that, but it doesn't change anything. I was also able to reproduce it on my desktop computer, upgraded to oneiric too, which alsa-base.conf or anything else about alsa has never be modified.
The method to reproduce it is very simple : 1 - open a terminal and execute 'alsamixer' 2 - lower some of the volume controls (PCM, Front, Surround, Center, LFE and Side) 3 - raise or lower the volume via the sound control in the upper bar or shortcuts : it raises all the volumes in alsamixer to the max, or almost... -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/874927 Title: changing the volume in the sound preferences mess up volumes in alsamixer for multi-channel card To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/pulseaudio/+bug/874927/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs