3d

threeD

Hi.
I have an ATI X1600 card, I have the video driver installed, but I can't get 3D working.
On the wiki for xf86-video-ati it says: Radeons up to the X1xxx series are fully supported, stable, and full 2D and 3D acceleration are provided.

pacman -Qs xf-86-video - http://paste.xinu.at/agD3/
lspci -v - http://paste.xinu.at/LRkJv/
lsmod - http://paste.xinu.at/lXwg2/
cat /etc/group | grep video - video:x:91:paullik
glxinfo - http://paste.xinu.at/LzL/
glxgears - black window and upon exit it says: 
XIO:  fatal IO error 11 (Resource temporarily unavailable) on X server ":0.0"
      after 35 requests (35 known processed) with 0 events remaining.

I also tried with some games such as warzone2100, 0ad and teeworlds which all show me black screens, but freeciv, warmux and battle for wesnoth work!
If the screen becomes black when launching some of these games I have to switch to tty and reboot.
Installing libtxc_dxtn from AUR doesn't change a thing.

I must say that I have no xorg.conf file...

Also, here: http://www.free3d.org/ ATI X1600 is mentioned to work.
And here: http://xorg.freedesktop.org/wiki/RadeonProgram R500 (ATI X1600 included) is mentioned to work with some 3d games.

Why I can't get 3D working?

Thanks!