Sky graphical problem - Help please.

[jameson]

Sorry it did not work, I did a bit of reading about your card and it seems that it is designed for 3D applications like Autocad and 3DS Max. The drivers are also optimised for these as well, so you seem stuck. I have always used ATI so not really much of an expert when it comes to Nvidia, but if you have time you can try to play with this section of your config.

[Render_OpenGL]
TexQual=3
TexMipFilter=3
TexCompress=0
TexFlags.UseDither=1
TexFlags.UseAlpha=0
TexFlags.UseIndex=0
TexFlags.PolygonStipple=1
TexFlags.UseClampedSprites=0
TexFlags.DrawLandByTriangles=1
TexFlags.UseVertexArrays=1
TexFlags.DisableAPIExtensions=0
TexFlags.ARBMultitextureExt=1
TexFlags.TexEnvCombineExt=1
TexFlags.SecondaryColorExt=1
TexFlags.VertexArrayExt=1
TexFlags.ClipHintExt=0
TexFlags.UsePaletteExt=1
TexFlags.TexAnisotropicExt=1
TexFlags.TexCompressARBExt=1

My experience with ATI cards is that they can all be set to 0 except these:

TexFlags.ARBMultitextureExt=1
TexFlags.TexEnvCombineExt=1
TexFlags.SecondaryColorExt=1

If any of these 3 are set to 0 you get black sky. The result of setting most to 0 may not look nice but it should work. Then you have to switch them on one or two at a time and run the game to see what works or not as the case may be. (Some settings are paired like Vertex arrays, hence 2 at a time).

In this section below try turning off the NV bits (set to 0) or all of them and again turning on one at a time and or in different combinations.

TexFlags.TexEnvCombine4NV=1
TexFlags.TexEnvCombineDot3=1
TexFlags.DepthClampNV=1
TexFlags.SeparateSpecular=1
TexFlags.TextureShaderNV=1

This is a thankless task and takes hours and possibly days but you may find the setting that causes the problem. As you say it probably is a driver mismatch and if the older drivers worked you may have to go with them. Good luck, hope this helps.