It seems that when I use -opengl and mouse look is enabled in the latest Vavoom, all mouse movement is interpreted as "up and to the left" and I end up spinning around staring at the ceiling. When run without -opengl, mouse operation is normal. Mouse sensitivity and "inver mouse" have the expected effects. I'm afraid I don't know enough about Vavoom to troubleshoot this (does Vavoom still use Allegro for mouse input with -opengl?). Info: Vavoom version: 1.16.1 Allegro: 4.1.16 OpenGL: NVIDIA 6629 (GLX 1.3) OS: SuSE Linux 9.2 I would appreciate any suggestions-I was looking forward to playing Heretic again!

Do you have a (yet uncalibrated) joystick?

No, I have no joystick. I ran with -nojoy just for fun, and no difference.

In latest development releases of Allegro they changd omething that causes this bug. I tried to downgrade to latest stable version (4.0.3) and it dosen't have this problem.

I've confirmed everything works with Allegro 4.03; I didn't even realize 4.18 was WIP. Hopefully it won't be too hard to figure out what changed from 4.03 to cause the mouse problem...Anyway, thanks for your help, everything seems to work great now!

Actually with 4.0.3 this problem still exists in windowed mode. So I decided to stop using my hacked driver and switch to AllegroGL library. Now everything works fine.