Fullscreen and locking


I have a written an app that works fine in windowed mode. But if I go into
fullscreen it segfaults if I choose the same bpp as on desktop.
Before segfault it says that it’s unable to lock a surface.

I’m developing under windows. Using SDL 1.1.6 with a GeForce 2 Mx. Is this a
problem known in SDL 1.1.6 or has this something to do with DirectX (I read
something about that a blit could fail and the data has to be reloaded…)

Thx in advance
–Alexander Lauser