I found the problem. It's the arrangement of the Screens. My xorg.conf now says: Screen "Screen 1" Screen "Screen 0" RightOf "Screen 1" And this works. Thank you for your ideas, you made me find the right way! Qbix: Maybe DOSBox has some inconsistency with negative cursor positions?

Okay, thanks so far for your hints! @simonecuttlefish: Changing the sensitivity just made the cursor faster. I've had changed the Autolock entry to false before (to make DOSBox launch in a usable state). I've put some green USB-to-PS2 adaptor between my computer and my mouse, so it should be a PS/2- …

Hey everybody! Since I bought a new computer I have some trouble with my beloved DOSBox: The mouse locking ain't working no more, at least the mouse's X axis. If I start the games without a lock, everything works fine (besides the cursor moving out of the window). However, once I press Ctrl+F10 to …