[SDL] Problem with glRenderMode(GL_SELECT) in Multimonitor environment

[Göttling Thomas]

Good Day!

I actual debug for more than one Month on this Problem.

On Multiscreen Environments with NVidia Cards, the Call of 
glRenderMode(GL_SELECT); 
corrupts the Memory of my Application. When I disable one Monitor,
everything is Fine!

I Tried different Versions of the Driver, including Beta, and the
Development Drivers. All of them have the same behaviour. GL-Expert and some
self-made Checks cant find Problems within the GL Statements.

The only hint I have:
Maybe, the Call of GL_SELECT switches GL to Software rendering while in this
State?

How do I Know that this call corrupts my Memory?
I Call the Memory Validation function between each single Command. Before
this Statement, everything is fine, after that it isn't.

Is this Problem known?

Best regards, and Thanks your Time,

Thomas