I have a similar problem (if not the same). I figured out that keyboard shortcuts operate on "Master Volume" instead gnome-volume-applet let you choose the channel to track. In my case, the channel "Master" doesn't affect the output volume at all. The real master volume is instead "Headphone". This is a common problem due to non perfect sound card detection at kernel-level, and explains the channel chooser option in gnome-volume-applet.
For desktop consistency, you should force keyboard shortcuts to operate on the channel chosen in gnome-volume-applet. -- Karmic - Gnome volume keyboard shortcuts do not affect gnome-volume-control-applet https://bugs.launchpad.net/bugs/403609 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