radeon driver & EXA option

[ott0disk]

Hi everybody,i'm having some trouble with the xorg.conf configuration file,i
recently switched from the amd/ati proprietary driver to the radeon that
support well my graphic card.Finally i got everything working but i need
some options to be enabled in xorg,especially :
Option     "AGPFastWrite"
Option      "DynamicPM"                     "on"      # Dynamic powersaving.
Option      "DynamicClocks"
Option      "ClockGating" "on"    # Assisting option for powersaving.

i tryied to enable them but i know(maybe i'm wrong) that until AccellMethod
EXA is used i'will not have these working,in fact:

(II) RADEON(0): Direct rendering enabled
(II) RADEON(0): Setting EXA maxPitchBytes
(II) EXA(0): Driver allocated offscreen pixmaps
(II) EXA(0): Driver registered support for the following operations:
(II)         Solid
(II)         Copy
(II)         Composite (RENDER acceleration)
(II)         UploadToScreen
(II)         DownloadFromScreen
(II) RADEON(0): Acceleration enabled
(==) RADEON(0): DPMS enabled
(==) RADEON(0): Silken mouse enabled
(II) RADEON(0): Set up textured video
(II) RADEON(0): RandR 1.2 enabled, ignore the following RandR disabled
message.
(WW) RADEON(0): Option "BusType" is not used
(WW) RADEON(0): Option "AGPMode" is not used
(WW) RADEON(0): Option "AGPFastWrite" is not used
(WW) RADEON(0): Option "DynamicPM" is not used
(WW) RADEON(0): Option "ClockGating" is not used
(WW) RADEON(0): Option "DynamicClocks" is not used

...from the log file,i already tryied to turn off exa,i tryed to set the
AccellMethod to XAA but exa will still be loaded,
and removing libexa.so from the module path make it crash,someone know how
to tell xorg to not use exa??thanks in advance


ps i'm running debian testing with these spec:
X.Org X Server 1.7.7
Release Date: 2010-05-04
X Protocol Version 11, Revision 0
Build Operating System: Linux 2.6.32-5-686 i686 Debian
Current Operating System: Linux ott0disk 2.6.35.4-ott0disk #2 SMP Fri Oct 1
09:50:57 CEST 2010 i686
Kernel command line: BOOT_IMAGE=/boot/vmlinuz-2.6.35.4-ott0disk
root=/dev/sda1 ro quiet


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