Ati 9200 acceleration 3D

Bonjour,
J'ai un petit probleme sur l'acceleration 3D avec ati 9200:
j'obtien un resultat pas terrible du tout:

[pqcuong@localhost pqcuong]$ glxgears
285 frames in 5.0 seconds = 57.000 FPS
297 frames in 5.0 seconds = 59.400 FPS
294 frames in 5.0 seconds = 58.800 FPS
296 frames in 5.0 seconds = 59.200 FPS
297 frames in 5.0 seconds = 59.400 FPS
297 frames in 5.0 seconds = 59.400 FPS
297 frames in 5.0 seconds = 59.400 FPS
297 frames in 5.0 seconds = 59.400 FPS
297 frames in 5.0 seconds = 59.400 FPS

[pqcuong@localhost pqcuong]$ lsmod | grep fglrx
fglrx 223292 9

[pqcuong@localhost pqcuong]$ glxinfo | grep direct
direct rendering: Yes


j'ai procédé de regarder mon xorg.conf, il me parait bien configuré:
...................
Section "Device"
Identifier "Videocard0-fglrx"
Driver "fglrx"
VendorName "Videocard vendor"
BoardName "ATI Radeon Mobility M9"
# ### generic DRI settings ###
# === disable PnP Monitor ===
#Option "NoDDC"
# === disable/enable XAA/DRI ===
Option "no_accel" "no"
Option "no_dri" "no"
# === misc DRI settings ===
Option "mtrr" "off" # disable DRI mtrr mapper, driver has its own code for mtrr
.................................
Section "DRI"
Group 0
Mode 0666
EndSection

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et j'ai également regardé le message log:

....................

(II) fglrx(0): [drm] created "fglrx" driver at busid "PCI:1:0:0"
(II) fglrx(0): [drm] added 8192 byte SAREA at 0xe0971000
(II) fglrx(0): [drm] mapped SAREA 0xe0971000 to 0xb7f21000
(II) fglrx(0): [drm] framebuffer handle = 0x98000000
(II) fglrx(0): [drm] added 1 reserved context for kernel
(II) fglrx(0): DRIScreenInit done
(II) fglrx(0): Kernel Module Version Information:
(II) fglrx(0): Name: fglrx
(II) fglrx(0): Version: 3.14.1
(II) fglrx(0): Date: Sep 27 2004
(II) fglrx(0): Desc: ATI Fire GL DRM kernel module
(II) fglrx(0): Kernel Module version matches driver.
(II) fglrx(0): Kernel Module Build Time Information:
(II) fglrx(0): Build-Kernel UTS_RELEASE: 2.6.9-UT
(II) fglrx(0): Build-Kernel MODVERSIONS: no
(II) fglrx(0): Build-Kernel __SMP__: no
(II) fglrx(0): Build-Kernel PAGE_SIZE: 0x1000
(II) fglrx(0): [drm] register handle = 0x90400000
(II) fglrx(0): [agp] Mode=0x1f000217 bridge: 0x8086/0x3340
(II) fglrx(0): [agp] AGP v1/2 disable mask 0x00000000
(II) fglrx(0): [agp] AGP v3 disable mask 0x00000000
(II) fglrx(0): [agp] enabling AGP with mode=0x1f000314
(II) fglrx(0): [agp] AGP protocoll is enabled for grafics board. (cmd=0x1f000314)
(II) fglrx(0): [agp] grafics chipset has AGP v2.0
(II) fglrx(0): [drm] ringbuffer size = 0x00100000 bytes
(II) fglrx(0): [drm] DRM buffer queue setup: nbufs = 100 bufsize = 28672
(II) fglrx(0): [drm] texture shared area handle = 0xe5001000
(II) fglrx(0): shared FSAAScale=1
(II) fglrx(0): DRI initialization successfull!
(II) fglrx(0): FBADPhys: 0x98000000 FBMappedSize: 0x005e9000
(II) fglrx(0): FBMM initialized for area (0,0)-(1280,1210)
(II) fglrx(0): FBMM auto alloc for area (0,0)-(1280,800) (front color buffer - assumption)
(==) fglrx(0): Backing store disabled
(==) fglrx(0): Silken mouse enabled
(II) fglrx(0): Using hardware cursor (scanline 800)
(II) fglrx(0): Largest offscreen area available: 1280 x 402
(**) Option "dpms"
(**) fglrx(0): DPMS enabled
(WW) fglrx(0): Option "XaaNoOffscreenPixmaps" is not used
(**) fglrx(0): Option "XaaNoOffscreenPixmaps" "yes"
(II) fglrx(0): Using XFree86 Acceleration Architecture (XAA)
Screen to screen bit blits
Solid filled rectangles
8x8 mono pattern filled rectangles
Solid Lines
Dashed Lines
Setting up tile and stipple cache:
30 128x128 slots
(II) fglrx(0): Acceleration enabled
(II) fglrx(0): X context handle = 0x00000001
(II) fglrx(0): [DRI] installation complete
(II) fglrx(0): Direct rendering enabled
(II) Loading extension FGLRXEXTENSION
(II) Loading extension ATITVOUT
(==) RandR enabled
(II) Setting vga for screen 0.
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