I happen to have the same problem with Fujitsu Siemens Amilo Pi1505. Killing gnome-power-manager doesn't help. Switching desktops with ctrl-alt-left or right does hide the volume-bar window, but the keyboard isn't working until I switch to VT1 using ctrl-alt-F1. I'm switched back instantaneously without pressing ctrl-alt-F7.
I happen to have the same problem with Fujitsu Siemens Amilo Pi1505. Killing gnome-power-manager doesn't help. Switching desktops with ctrl-alt-left or right does hide the volume-bar window, but the keyboard isn't working until I switch to VT1 using ctrl-alt-F1. I'm switched back instantaneously without pressing ctrl-alt-F7.