I have suse11 GNOME desc.
From log file i get:

RADEONHD(0): Selected XAA 2D acceleration.
(--) RADEONHD(0): Detected an RV570 on a Sapphire X1950 GT
(II) RADEONHD(0): Mapped IO at 0xb7c32000 (size 0x00010000)
(II) RADEONHD(0): Getting BIOS copy from legacy VBIOS location
(II) RADEONHD(0): ATOM BIOS Rom:
SubsystemVendorID: 0x174b SubsystemID: 0xe190
IOBaseAddress: 0xd000
X1950GT 256MB BIOS 600m/500e

1) Why XAA 2D acceleration Selected?
2) I have to solve it by looking for drivers or there is something else that i can do?

I try the bellow but nothing done:

I Put on xong.conf at options:

Option "RenderAccel" "on"
Option "SubPixelOrder" "RGB" - άν έχεις TFT οθόνη
Option "DDCMode" "true"
Option "ColorTiling" "true"
Option "DMAForXv" "true"
Option "HWCursor" "on"
Option "DynamicClocks" "off"
Option "backingstore" "true"
Option "AccelMethod" "exa"

glxinfo=> Rendering was off again
The unmodified xong.conf placed in its position.

Have in mind that im too rookie for complex things.
Any help will be helpfull

AS long as you have not install the correct driver the 3D is disabled
Find out on the opensuse website if they supported the install of the original driver.
If so all you have to do is add the repositories to the one you used and yast take care of the install
As a example I use a Nvidia one of my repositories is download nvidia.com/openssuse/11.0

you should just install the drivers and it will work fine, ofc. try searching the internet for recommended one's for your os.

Debian Development