Created attachment 117696 [details]
screenshot in the PA menu

the cursor is a big white square in planetary annihilation. (see screenshot
attached).

only the blue arrow should be seen, the white square should be transparent.

HW is radeon HD 7950 with radeonsi driver

OpenGL vendor string: X.Org
OpenGL renderer string: Gallium 0.4 on AMD TAHITI
OpenGL core profile version string: 3.3 (Core Profile) Mesa 10.6.4
OpenGL core profile shading language version string: 3.30

thread on uber forum : 
https://forums.uberent.com/threads/state-of-the-cursor-fix.69376/

tried to add   Option  "SWCursor" "True" to xorg.conf, but doesn't have any
visible effect.