Sebastien, Just to clarify: in my previous comment I really meant pressing the volume keys (they have an indication + or - on my keyboard), I did NOT mean + or - keys on the numpad of the keyboard and the focus is NOT on the slider. Sorry for the possible confusion. I believe this is the same bug as described by Dan F.
-- Keyboard Volume Buttons Don't Work While Volume Control Open https://launchpad.net/bugs/51911 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs