Global 4:3 Game/Emulator aspect ratio

[andyhamer]

I know this is most probably due to something that i have recently done (after i have changed some Desktop settings) but every game & emulator now displays in only 4:3 (black bars on either side) and i have no idea what setting i have changed, or more importantly how to change it back.. can anyone help here?


Thanks.

 

[Prometheus]

Just a thought: Didn't you enable display compositing recently, in order to get a transparent Xfce panel? Does this continue if you turn compositing off again?