- doesn't show up at all
- is a black square
- is a square mixed black and/or with parts of another screen area or the screen background (Steam)
or you have display issues when running wine, try this option in your xorg.conf:
If this works for you in a situation which is not described above, please post a comment. Otherwise, e.g. if you don't know what xorg.conf is and where to find it, please use google for further information.Option "UseFastTLS" "2"