Huge necropost, but this issue should now be fixed in Q2DOS. I had problems with it on some real hardware and fixed it there. Let me know if it's still not working.

Q2DOS with 3DFX rendering works OK in pcem for those interested.

It's quite possible as the way the video works is slightly different in Quake 2. I am wondering if someone where in the init routines there was some test for some non-compliant cards and they added such things. I saw there was some kind of specific hack in there some ATI cards that didn't report the...

I don't know what the video card was the user choose. He reported the issue to us and in turn we reverted back to 320x200 as default startup resolution and I posted the issue here.

I will find out more though.

Recently, we switched our code in Q2DOS to default to 320x240 Mode-X. The reasons were that the original ports expected the game to be in a 4:3 resolution and the canonical resolution was 320x240. In any case, this change worked OK in real DOS, Win9x Dos Box, and in the DOSBox emulator itself. Someo...