Problem with Anti-Aliasing under OpenGL

[Squarefox]

HI,

I've programmed a game. When I set AntiAlias of the Irrlicht config to 255 and activate anti-aliasing for all scene nodes, it works well under DirectX 9.
But under OpenGL it doesn't work. I tried other settings than 255 (e.g. 2 and 4), but it didn't worked either.
I though it was the graphics driver, but when I activate anti-aliasing override in Catalyst Control Center, the anti-aliasing is shown.
If I only use "use application settings", it doesn't work.

Can anyone help?

Kind regards,
Squarefox

[Squarefox]

I tested this also on my laptop and there the anti-aliasing under OpenGL works. So this is most probably a driver problem.