Bizarre Computer Problems

[DrDoom]

uhm, well....

I only get mouse problems when running Nexuiz. No other app/game behaves that way. And Im pretty sure my (good old) mouse is still ok - Im using it every day without any trouble, except in Nex'. Another mouse, hmm, I have a kind of adapter to plug the one I have in as an usb-device... dont think that will help, but Im trying.
I remeber I had a similar issue with other OpenGL- and SDL-based games. The effect You describe to exit and restart the app/game did work back then, but I didnt encounter that behaviour for quiete a while now, only in Nexuiz.

specs...
Im playing Nexuiz compiled from cvs/svn, which I update&compile every few weeks...
My system basically is a Debian (mostly) testing, with kernel 2.6.17 and libc6 2.3.6-15 (all debian packages).
sdl-libs versions:
sdl-image: 1.2.5-2
sdl-mixer: 1.2.6-1.1+b1
sdl-net: 1.2.5-7
sdl-sound: 1.0.1-9+b1
libsdl1.2-dev: 1.2.10-3
sdl-gfx1.2: 2.0.13-2

Xorg: 7.0.22 - Ill skip the 100 packages for each X-component here...

and of course the nvidia-driver: 1.0.8762-2, same as kernel module, the kernel module was compiled i686, gcc 4.0.4 20060507 (prerelease) (Debian 4.0.3-3), same as version as used to compile the kernel.

I really dont think this is a hardware-issue, as I would have strange effects in other apps as well, so Ill omit my hardware-specs here, but If You really want to hear about that, Ill post them too.

[divVerent]

I remeber I had a similar issue with other OpenGL- and SDL-based games. The effect You describe to exit and restart the app/game did work back then,

Yes, what I was describing happens when ANY OpenGL fullscreen game/app crashes.

but I didnt encounter that behaviour for quiete a while now, only in Nexuiz.

If Nexuiz, running without root privileges, can "disable" your mouse even across X server restarts (Ctrl-Alt-Backspace), something is totally wrong with your operating system and you should report it as Linux kernel bug.

If Nexuiz can disable your mouse just for the running X session, starting and exiting helps.

Can you try starting gpm as console mouse service (then you have a mouse pointer on text-mode consoles) and when it happens again, press Ctrl-Alt-F1 and check if the mouse works there? If it doesn't, it is either a hardware problem or a kernel problem. If it does but restarting the X server doesn't work, it could as well be a bug in the X server's mouse driver or a not completely protocol conforming mouse.

BTW, the only pointer movement affecting functions Nexuiz uses are XGrabPointer (all events to the Nexuiz window), XWarpPointer (jumps to a given position) and XDefineCursor (used to make the pointer disappear). So when it happens again, look with ps if there are any Nexuiz processes left, and if there are, kill them with -9. That removes any effects that XGrabPointer and XWarpPointer could cause. After that, run xsetroot and move your mouse, even click around wildly. It should work again. If not, it isn't Nexuiz's bug but something more serious.

However, I still believe that it is a cable issue - note that you move your mouse a totally different way in FPS games than in most other applications.