My screen brightness changes on my MSI U120 when I log in. I can fix this by switching workspaces, and the screen will stay at a constant brightness. Changing the brightness using the function keys triggers the problem again. Occasionally if I change workspaces too late the touchpad will stop working. This happens on Joli OS too, but not on Windows. Interestingly, the flickering goes on at the logon screen in Ubuntu, at which point I press Control Alt Left / Right. But, the flickering does not happen at the logon screen in Joli OS, but after I login it starts.Any help would be greatly appreciated.