erro ao abrir tremulous

[aelson]

Depois de instalar deu este erro na hora de abrir 

2080 files in pk3 files
execing default.cfg
couldn't exec autogen.cfg
couldn't exec autoexec.cfg
Hunk_Clear: reset the hunk ok
----- Client Initialization -----
----- Initializing Renderer ----
-------------------------------
----- Client Initialization Complete -----
----- R_Init -----

------- Input Initialization -------
Joystick is not active.
------------------------------------
...loading libGL.so.1:
Calling SDL_Init(SDL_INIT_VIDEO)...
SDL_Init(SDL_INIT_VIDEO) passed.
Initializing OpenGL display
...setting mode 3: 640 480
SDL_SetVideoMode failed: Couldn't find matching GLX visual
SDL_SetVideoMode failed: Couldn't find matching GLX visual
Using 8/8/8 Color bits, 16 depth, 8 stencil display.
GL_RENDERER: Mesa GLX Indirect


***********************************************************
You are using software Mesa (no hardware acceleration)!   
Driver DLL used: libGL.so.1
If this is intentional, add
       "+set r_allowSoftwareGL 1"
to the command line when starting the game.
***********************************************************
...WARNING: could not set the given mode (3)
----- CL_Shutdown -----
RE_Shutdown( 1 )
-----------------------
----- CL_Shutdown -----
-----------------------
Sys_Error: GLimp_Init() - could not load OpenGL subsystem

Tem algo a ver com a vga ? drive ?

[jaypee]

IXI digita glxinfo e glxgears para eu ve.