низкая производительность intel gma x4500hd

в glxgears на чистых иксах (startx /usr/bin/glxgears -- :1) всего ~560fps.
и любое приложение использующее gl ругается на ttm:

ниже выкладываю версии софта (в всё вроде размаскил), lspci, xorg.conf
версии софта:

% paludis -q xorg-server libdrm mesa xf86-video-intel gentoo-sources                                                                ~
* x11-base/xorg-server
    gentoo:                  1.3.0.0-r6 (1.4.2)K (1.5.2)K 1.5.3 {:0} 
    installed:               1.5.3* {:0} 
    Description:             X.Org X servers
    Homepage:                http://xorg.freedesktop.org/
    License:                 xorg-server MIT
    Installed time:          Fri Jan  2 05:31:12 2009
    Use flags:               (-3dfx) (-debug) (-dmx) (-hal) (ipv6) (kdrive) (-minimal) (nptl) (-sdl) (-tslib) (xorg) input_devices: (-acecad) (-aiptek) (-calcomp) (-citron) (-digitaledge) (-dmc) (-dynapro) (-elo2300) (-elographics) (-evdev) (-fpit) (-hyperpen) (-jamstudio) (-joystick) (keyboard) (-magellan) (-microtouch) (mouse) (-mutouch) (-palmax) (-penmount) (-spaceorb) (-summa) (-synaptics) (-tek4957) (-tslib) (-ur98) (-vmmouse) (-void) (-wacom) video_cards: (-apm) (-ark) (-ast) (-chips) (-cirrus) (-cyrix) (-dummy) (-epson) (-fbdev) (-fglrx) (-geode) (-glint) (-i128) (-i740) (-impact) (-imstt) (intel) (-mach64) (-mga) (-neomagic) (-newport) (-nsc) (-nv) (-nvidia) (-r128) (-radeon) (-radeonhd) (-rendition) (-s3) (-s3virge) (-savage) (-siliconmotion) (-sis) (-sisusb) (-sunbw2) (-suncg14) (-suncg3) (-suncg6) (-sunffb) (-sunleo) (-suntcx) (-tdfx) (-tga) (-trident) (-tseng) (-v4l) (-vermilion) (-vesa) (-vga) (-via) (-vmware) (-voodoo) (-xgi)
    From repositories:       gentoo
    Installed using:         paludis-0.32.4

* x11-libs/libdrm
    gentoo:                  2.3.0 2.3.1_pre20080528 2.3.1 2.4.1 2.4.3 {:0} 
    installed:               2.4.3* {:0} 
    local:                   2.4.3 {:0} 
    Description:             X.Org libdrm library
    Homepage:                http://dri.freedesktop.org/
    License:                 libdrm
    Installed time:          Fri Jan  2 04:26:06 2009
    Use flags:               (-debug)
    From repositories:       local
    Installed using:         paludis-0.32.4

* media-libs/mesa
    gentoo:                  6.5.2-r1 7.0.3 7.1_rc3 7.1 7.2_rc1 7.2 {:0} 
    installed:               7.2* {:0} 
    Description:             OpenGL-like graphic library for Linux
    Homepage:                http://mesa3d.sourceforge.net/
    License:                 LGPL-2
    Installed time:          Fri Jan  2 04:27:29 2009
    Use flags:               (-debug) (-doc) (-motif) (nptl) (-pic) (xcb) video_cards: (intel) (-mach64) (-mga) (-none) (-r128) (-radeon) (-s3virge) (-savage) (-sis) (-sunffb) (-tdfx) (-trident) (-via)
    From repositories:       gentoo
    Installed using:         paludis-0.32.4

* x11-drivers/xf86-video-intel
    gentoo:                  (1.6.5)R (1.7.4)R 2.1.1 2.2.1 2.3.2 2.4.2-r3 2.4.3 2.5.0 2.5.1 2.5.1-r1 {:0} 
    installed:               2.5.1-r1* {:0} 
    Description:             X.Org driver for Intel cards
    Homepage:                http://xorg.freedesktop.org/
    License:                 xf86-video-intel
    Installed time:          Fri Jan  2 04:28:22 2009
    Use flags:               (-debug) (dri)
    From repositories:       gentoo
    Installed using:         paludis-0.32.4

* sys-kernel/gentoo-sources
    gentoo:                  2.6.16-r13 {:2.6.16-r13} 2.6.20-r10 {:2.6.20-r10} 2.6.24-r8 {:2.6.24-r8} 2.6.25-r9 {:2.6.25-r9} 2.6.26-r2 {:2.6.26-r2} 2.6.26-r3 {:2.6.26-r3} 2.6.26-r4 {:2.6.26-r4} 2.6.27 {:2.6.27} 2.6.27-r1 {:2.6.27-r1} 2.6.27-r2 {:2.6.27-r2} 2.6.27-r3 {:2.6.27-r3} 2.6.27-r4 {:2.6.27-r4} 2.6.27-r5 {:2.6.27-r5} 2.6.27-r6 {:2.6.27-r6} 2.6.27-r7 {:2.6.27-r7} 2.6.28 {:2.6.28} 
    installed:               2.6.28* {:2.6.28} 
    Description:             Full sources including the Gentoo patchset for the 2.6 kernel tree
    Homepage:                http://dev.gentoo.org/~dsd/genpatches
    License:                 GPL-2
    Installed time:          Thu Jan  1 12:23:31 2009
    Use flags:               (-build) (symlink)
    From repositories:       gentoo
    Installed using:         paludis-0.32.4

xorg.conf:

Section "Module"
    Load        "dbe"  	# Double buffer extension
    SubSection  "extmod"
      Option    "omit xfree86-dga"   # don't initialise the DGA extension
    EndSubSection
    Load        "freetype"
    Load       "glx"
    Load       "dri"
EndSection
Section "DRI"
    Mode 0666
EndSection
Section "Files"
    FontPath   "/usr/share/fonts/local/"
    FontPath   "/usr/share/fonts/misc/:unscaled"
    FontPath   "/usr/share/fonts/75dpi/:unscaled"
    FontPath   "/usr/share/fonts/100dpi/:unscaled"
    FontPath   "/usr/share/fonts/Type1/"
    FontPath   "/usr/share/fonts/corefonts"
EndSection
Section "ServerFlags"
EndSection
Section "InputDevice"
    Identifier	"Keyboard1"
    Driver	"kbd"
    Option     "XkbRules"      "xorg"
    Option     "XkbModel"      "pc105"
    Option     "XkbLayout"     "us,ru(winkeys)"
    Option     "XkbOptions"    "grp:caps_toggle,grp_led:scroll"
EndSection
Section "InputDevice"
    Identifier	"Mouse1"
    Driver	"mouse"
     Option     "Protocol"      "Auto"
    Option "Device"      "/dev/input/mice"
     Option "ZAxisMapping" "4 5"
     Option "SendCoreEvents"  "true"
EndSection
Section "Monitor"
    Identifier  "My Monitor"
    Option        "DPMS"
    Modeline "1680x1024_60.00"  143.48  1680 1784 1968 2256  1024 1025 1028 1060  -HSync -Vsync
EndSection
Section "Device"
    Identifier "Intel X4500HD"
    Driver     "intel"
EndSection
Section "Extensions"
EndSection
Section "Screen"
    Identifier  "Screen 1"
    Device      "Intel X4500HD"
    Monitor     "My Monitor"
   DefaultDepth 24
    Subsection "Display"
        Depth       24
        Modes "1600x1050" "1024x640" "1152x720" "1280x800" "1440x900"  "1024x768" "800x600" "640x480"
        # 8:5 and 4:3 classical modes
    EndSubsection
    Subsection "Display"
        Depth       16
        # 8:5 and 4:3 classical modes
    EndSubsection
EndSection
Section "ServerLayout"
    Identifier  "Simple Layout"
    Screen "Screen 1"
    InputDevice "Mouse1" "CorePointer"
    InputDevice "Keyboard1" "CoreKeyboard"
EndSection

lspci:

00:00.0 Host bridge: Intel Corporation 4 Series Chipset DRAM Controller (rev 03)
00:02.0 VGA compatible controller: Intel Corporation 4 Series Chipset Integrated Graphics Controller (rev 03)
00:02.1 Display controller: Intel Corporation 4 Series Chipset Integrated Graphics Controller (rev 03)
00:1a.0 USB Controller: Intel Corporation 82801JI (ICH10 Family) USB UHCI Controller #4
00:1a.1 USB Controller: Intel Corporation 82801JI (ICH10 Family) USB UHCI Controller #5
00:1a.2 USB Controller: Intel Corporation 82801JI (ICH10 Family) USB UHCI Controller #6
00:1a.7 USB Controller: Intel Corporation 82801JI (ICH10 Family) USB2 EHCI Controller #2
00:1b.0 Audio device: Intel Corporation 82801JI (ICH10 Family) HD Audio Controller
00:1c.0 PCI bridge: Intel Corporation 82801JI (ICH10 Family) PCI Express Port 1
00:1c.5 PCI bridge: Intel Corporation 82801JI (ICH10 Family) PCI Express Port 6
00:1d.0 USB Controller: Intel Corporation 82801JI (ICH10 Family) USB UHCI Controller #1
00:1d.1 USB Controller: Intel Corporation 82801JI (ICH10 Family) USB UHCI Controller #2
00:1d.2 USB Controller: Intel Corporation 82801JI (ICH10 Family) USB UHCI Controller #3
00:1d.7 USB Controller: Intel Corporation 82801JI (ICH10 Family) USB2 EHCI Controller #1
00:1e.0 PCI bridge: Intel Corporation 82801 PCI Bridge (rev 90)
00:1f.0 ISA bridge: Intel Corporation 82801JIR (ICH10R) LPC Interface Controller
00:1f.2 IDE interface: Intel Corporation 82801JI (ICH10 Family) 4 port SATA IDE Controller
00:1f.3 SMBus: Intel Corporation 82801JI (ICH10 Family) SMBus Controller
00:1f.5 IDE interface: Intel Corporation 82801JI (ICH10 Family) 2 port SATA IDE Controller
02:00.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL8111/8168B PCI Express Gigabit Ethernet controller (rev 02)
03:05.0 IDE interface: Integrated Technology Express, Inc. IT8213 IDE Controller
03:07.0 FireWire (IEEE 1394): Texas Instruments TSB43AB23 IEEE-1394a-2000 Controller (PHY/Link)