If you don't know what linux is, don't even bother reading this it will just give you a headache.

I you do know what linux is than please read this I need help!

I have UT2003 demo for linux, and my hardware is: an Intel 845 video card w/64mb of ram 384mb of system ram and a 1.7ghz celeron CPU.

The problem is when I type ut2003_demo in the terminal, it starts up until the guy breaks out of the nVidia logo and then it quits an gives me this:

Xlib: extension "XiG-SUNDRY-NONSTANDARD" missing on display ":0.0".

Backtrace:
[ 1] ./Core.so [0x40a0878a]
[ 2] /lib/tls/libc.so.6 [0x420277b8]
[ 3] /usr/X11R6/lib/modules/dri/i830_dri.so [0x45024be0]
[ 4] /usr/X11R6/lib/modules/dri/i830_dri.so [0x4502558f]
[ 5] /usr/X11R6/lib/modules/dri/i830_dri.so [0x4500b165]
[ 6] /usr/X11R6/lib/modules/dri/i830_dri.so [0x44ffd8be]
[ 7] /usr/local/games/ut2003_demo/System/OpenGLDrv.so(DrawPrimitive__22FOpenGLRenderInterface14EPrimitiveTypeiiii+0x373) [0x41844aeb]
[ 8] ./Engine.so(Render__21USkeletalMeshInstanceP13FDynamicActorP15FLevelSceneNodePt5TList1ZP13FDynamicLightPt5TList1ZP20FProjectorRenderInfoP16FRenderInterface+0x11a7) [0x403c3f43]
[ 9] ./Engine.so(Render__13FDynamicActorP15FLevelSceneNodePt5TList1ZP13FDynamicLightPt5TList1ZP20FProjectorRenderInfoP16FRenderInterface+0x703) [0x403450a7]
[10] ./Engine.so [0x40364c81]
[11] ./Engine.so(RenderLevel__FP15FLevelSceneNodeP16FRenderInterface+0x22be) [0x40369f02]
[12] ./Engine.so(Render__15FLevelSceneNodeP16FRenderInterface+0x7a2) [0x4034c38a]
[13] ./Engine.so(Render__16FPlayerSceneNodeP16FRenderInterface+0x330) [0x403514ec]
[14] ./Engine.so(Draw__11UGameEngineP9UViewportiPUcPi+0x2f66) [0x4028bbf2]
[15] /usr/local/games/ut2003_demo/System/SDLDrv.so(Repaint__12USDLViewporti+0x33) [0x4180593b]
[16] /usr/local/games/ut2003_demo/System/SDLDrv.so(Tick__10USDLClient+0x85) [0x41804365]
[17] ./Engine.so(Tick__11UGameEnginef+0x31bd) [0x402902e1]
[18] ./ut2003-bin(SDL_SetVideoMode+0x969) [0x8051b1d]
[19] ./ut2003-bin(main+0x328c) [0x8058b2c]
[20] /lib/tls/libc.so.6(__libc_start_main+0xe4) [0x42015704]
[21] ./ut2003-bin(GetFullName__C7UObjectPw+0x7d) [0x80512d1]
Signal: SIGSEGV [segmentation fault]
Aborting.

Please help me I really don't want to go back to windows! Thanks in advance!