Error with X11

[Fico]

Hi friends,

I have successfully installed VDrift without error, but I can not run game. I get following error:

Code:

fico@debian:~/Downloads/vdrift-src-2011-09-01/build$ ./vdrift
INFO: Multi-processor system detected.  Run with -multithreaded argument to enable multithreading (EXPERIMENTAL).
INFO: Starting VDrift: development-full, Version: , O/S: Unix
INFO: Home directory: /home/fico
INFO: Settings file: /home/fico/.vdrift/VDrift.config (does not exist, will be created)
INFO: Data directory: /usr/local/share/games/vdrift/data
      DATA_DIR: /usr/local/share/games/vdrift/data
INFO: Temporary directory: /home/fico/.vdrift/tmp
INFO: Log file: /home/fico/.vdrift/log.txt
ERROR: Failed to load /home/fico/.vdrift/VDrift.config
INFO: The last VDrift startup was unsuccessful.
      Settings have been set to failsafe defaults.
      Your original VDrift.config file was backed up to VDrift.config.backup
INFO: SDL initialization successful
INFO: SDL video query was successful
INFO: Disabling antialiasing
ERROR: Display change failed: 800x600x16 16z fullscreen=0
ERROR: Error: X11 driver not configured with OpenGL
vdrift: src/window.cpp:122: void WINDOW_SDL::ChangeDisplay(int, int, int, int, bool, unsigned int, bool, std::ostream&, std::ostream&): Assertion `0' failed.
INFO: SIGABRT detected, releasing the mouse
Aborted

I have no idea, what is wrong, but it is obvious, that troubles are with my graphic settings. Device informations:

Code:

VGA compatible controller : ATI Technologies Inc Device 95c2
Memory : 256MB (32-bit, prefetchable)

My system is ( uname -a ):

Code:

Linux debian 2.6.32-5-686 #1 SMP Wed Jan 12 04:01:41 UTC 2011 i686 GNU/Linux

If you need some more informations, just let me know. Thanks in advance for all your responses.