Ubuntu + Beryl

Pozdravljeni.
Sem nov na linuxu, pa me zanima naslednje.
Instaliral sem ubuntu in ustrezne gonilnike za graficno Ati 9700, ki delujejo v redu. Namestil sem tudi Beryl in sem ob zagonu le-tega dobil naslednje:

test@ubuntu:~$ beryl-manager
test@ubuntu:~$ Xlib: extension "XFree86-DRI" missing on display ":0.0".
**************************************************************
* Beryl system compatiblity check *
**************************************************************

Detected xserver : AIGLX

Checking Display :0.0 ...

Checking for XComposite extension : passed (v0.3)
Checking for XDamage extension : passed
Checking for RandR extension : passed
Checking for XSync extension : passed

Checking Screen 0 ...

Checking for GLX_SGIX_fbconfig : passed
Checking for GLX_EXT_texture_from_pixmap : passed
Xlib: extension "XFree86-DRI" missing on display ":0.0".
Checking for non power of two texture support : failed

Support for non power of two textures missing
Xlib: extension "XFree86-DRI" missing on display ":0.0".
beryl: glXBindTexImageEXT is missing
beryl: Failed to manage screen: 0
beryl: No manageable screens found on display :0.0

_______________________

A je potrebno se kaj dodatno instalirati (XGL?)?

Izkusenim linux uporabnikom to vrjetno ne bo prevelik problem.
Prosim ce bi lahko odgovarjali tudi v razumljivem, začetniškem jeziku (step by step).



Hvala vsem za pomoc!
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