my mouse/keyboard combo is not working correctly when connected through an usb hub (Belkin 7 port usb 2.0 hub). That means, that only the keyboard is working nicely. I got this problem with 2 different desktop sets.

The hub is connected through an usb 3.0 slot on my notebook. If I connect the desktop combo directly through my notebook slot, all is working perfectly out of the box.

Other devices like external hdd's or usb sticks are working through the usb hub.

Ubuntu 12.04 64