This is a great bit of kit….no self-respecting developer should leave home without it :O) I needed to find a way of integrating it with Ubuntu Linux. Enter evrouter which integrates with USB devices. I installed evrouter. Added the following to .evrouterr (this maps keys to Griffin Powermate: Window “” “Griffin PowerMate” “” any key/256 “XKey/XF86AudioMute” “Griffin PowerMate” “” any rel/7/1 “XKey/XF86AudioRaiseVolume” “Griffin PowerMate” “” any rel/7/-1 “XKey/XF86AudioLowerVolume” Typed sudo evrouter /dev/input/event* I need to improve things by checking udev so it is automatically picked up when plugged in. But until then I have volume control!!!!!