I confirm what Jimmy Buck already said: when you shutdown your system in a forced way (or if it crashes, as it was in my case), the sound is not muted after a reboot. It looks like something mutes the channels upon shutdown, and then re-mutes them upon login. That's why the master channel is unmuted after boot, but gets muted at login.
-- [jaunty] Sound muted after boot https://bugs.launchpad.net/bugs/352732 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs