Users of ATI X-series and below:
First of all, make sure to install the 1.0.1 patch:
http://support.frictionalgames.com/entry/98/
Note: People who have bought from steam, use steam to update the game! Retail users, check with the distributer of the retail version.
The OpenGL drivers for this card can be really bad and it might help to try a few different drivers (try from the manufacturer of the cards as well as the ATI home page)
If that does not do the trick, then try out the Omega drivers. Found here:
http://www.omegadrivers.net
Users have reported to got the game working after using these!
If you still have problem you might want to try this that the user yhancik did like this to fix his system:
- installed older SiS GART drivers - not the most recent ones
(it activated AGP Write)
- uninstalled the ATI drivers
- used a drivers cleaner in safe mode (not sure if it's necessary)
- reboot
- switched my AGP speed from x8 to x4 (in the BIOS)
- reinstalled ATI drivers
Et voilà, AGP Read & Write, AGP Texture Acceleration (in dxdiag), all supported OpenGL extension activated and the Renderer test working Wink
Obviously the key is to install the graphic card drivers in the *right AGP conditions*, that is
- right GART drivers
- right AGP speed