Bug 25707

Created attachment 32174 [details]
Xorg.0.log

Created attachment 32175 [details]
glxinfo

Created attachment 32176 [details]
lspci

Important part:

(II) [drm] DRM interface version 1.3
(II) [drm] DRM open master succeeded.
(II) RADEON(0): [drm] Using the DRM lock SAREA also for drawables.
(II) RADEON(0): [drm] framebuffer handle = 0xe8000000
(II) RADEON(0): [drm] added 1 reserved context for kernel
(II) RADEON(0): X context handle = 0x1
(II) RADEON(0): [drm] installed DRM signal handler
(WW) RADEON(0): [agp] AGP not available
(EE) RADEON(0): [agp] AGP failed to initialize. Disabling the DRI.
(II) RADEON(0): [agp] You may want to make sure the agpgart kernel module
is loaded before the radeon kernel module.
(II) RADEON(0): [drm] removed 1 reserved context for kernel
(II) RADEON(0): [drm] unmapping 8192 bytes of SAREA 0xf8025000 at 0xb714e000
(II) RADEON(0): [drm] Closed DRM master.
(II) RADEON(0): RADEONRestoreMemMapRegisters() : 
(II) RADEON(0):   MC_FB_LOCATION   : 0x010700e8 0x00ff00e0
(II) RADEON(0):   MC_AGP_LOCATION  : 0x003f0000
(==) RADEON(0): Backing store disabled
(WW) RADEON(0): Direct rendering disabled
(EE) RADEON(0): Acceleration initialization failed
(II) RADEON(0): Acceleration disabled

You mean this line:
"(II) RADEON(0): [agp] You may want to make sure the agpgart kernel module
is loaded before the radeon kernel module." I`m sure that agpgart is loaded before radeon. Here`s my /etc/modules.autoload.d/kernel-2.6:
# /etc/modules.autoload.d/kernel-2.6: kernel modules to load when system boots.
#
# Note that this file is for 2.6 kernels.
#
# Add the names of modules that you'd like to load when the system
# starts into this file, one per line. Comments begin with # and
# are ignored. Read man modules.autoload for additional details.

# For example:
# aic7xxx
ati-agp
agpgart
drm
radeon

vboxdrv
vboxnetflt
vboxnetadp

Please attach your dmesg.

Created attachment 32180 [details]
dmesg

I think problem is here:
    0.234229] uvesafb: failed to execute /sbin/v86d
[    0.234238] uvesafb: make sure that the v86d helper is installed and executable
[    0.234246] uvesafb: Getting VBE info block failed (eax=0x4f00, err=-2)
[    0.234252] uvesafb: vbe_init() failed with -22
[    0.234261] uvesafb: probe of uvesafb.0 failed with error -22
[    0.234556] vesafb: framebuffer at 0xe8000000, mapped to 0xf8080000, using 10240k, total 16384k
[    0.234564] vesafb: mode is 1280x1024x32, linelength=5120, pages=2
[    0.234569] vesafb: protected mode interface info at c000:a176
[    0.234575] vesafb: pmi: set display start = c00ca218, set palette = c00ca2d6
[    0.234580] vesafb: scrolling: redraw
[    0.234585] vesafb: Truecolor: size=0:8:8:8, shift=0:16:8:0

Vesa says that framebuffer is mapped to 0xf8080000, but xorg still wants to acces it from 0xe8000000 or i don`t understand this thing.

The agp kernel module for your chipset doesn't seem to be loaded.  You system has an Intel AGP bridge so it should be using the intel agp module.

OK. I have found  it too. I had enabled ati chipset in the kernel. And now i enabled intel chipset anb all works fine. glxgears show ~1100 fps and ut2004-demo goes with little count of lags. Excuse me for disturbing you.
P.S. Sorry for my bad English -- i`m 15 years old student from Russia.

No problem, great you've this working now :)