when i upgrade Xorg 6.7 to 6.8.2 version
My computer can't use direct rendering.
I've installed on my pc intel official drivers and slackware
10.2 (clearly without xorg 6.8.2).
My computer is a Dell C400 laptop
Follow i write my xorg and my lsmod (when running xorg)

Section "ServerLayout"
Identifier "X.org Configured"
Screen 0 "Screen0" 0 0
InputDevice "Mouse0" "CorePointer"
InputDevice "Keyboard0" "CoreKeyboard"
EndSection

Section "Files"
RgbPath "/usr/X11R6/lib/X11/rgb"
ModulePath "/usr/X11R6/lib/modules"
FontPath "/usr/X11R6/lib/X11/fonts/misc/"
FontPath "/usr/X11R6/lib/X11/fonts/TTF/"
FontPath "/usr/X11R6/lib/X11/fonts/Type1/"
FontPath "/usr/X11R6/lib/X11/fonts/CID/"
FontPath "/usr/X11R6/lib/X11/fonts/75dpi/"
FontPath "/usr/X11R6/lib/X11/fonts/100dpi/"
EndSection

Section "Module"
Load "record"
Load "extmod"
Load "dbe"
Load "dri"
Load "glx"
Load "xtrap"
Load "freetype"
Load "type1"
EndSection

Section "InputDevice"
Identifier "Keyboard0"
Driver "kbd"
EndSection

Section "InputDevice"
Identifier "Mouse0"
Driver "mouse"
Option "Protocol" "auto"
Option "Device" "/dev/mouse"
EndSection

Section "Monitor"
Identifier "Monitor0"
VendorName "Monitor Vendor"
ModelName "Monitor Model"
EndSection

Section "Device"
### Available Driver options are:-
### Values: <i>: integer, <f>: float, <bool>: "True"/"False",
### <string>: "String", <freq>: "<f> Hz/kHz/MHz"
### [arg]: arg optional
#Option "NoAccel" # [<bool>]
#Option "SWcursor" # [<bool>]
#Option "ColorKey" # <i>
#Option "CacheLines" # <i>
#Option "Dac6Bit" # [<bool>]
Option "DRI" # [<bool>]
#Option "NoDDC" # [<bool>]
#Option "ShowCache" # [<bool>]
#Option "XvMCSurfaces" # <i>
#Option "PageFlip" # [<bool>]
Identifier "Card0"
Driver "i810"
VendorName "Intel Corp."
BoardName "82830 CGC [Chipset Graphics Controller]"
BusID "PCI:0:2:0"
EndSection

Section "Screen"
Identifier "Screen0"
Device "Card0"
Monitor "Monitor0"
DefaultDepth 24
SubSection "Display"
Viewport 0 0
Depth 24
EndSubSection
#SubSection "Display"
# Viewport 0 0
# Depth 4
#EndSubSection
#SubSection "Display"
# Viewport 0 0
# Depth 8
#EndSubSection
#SubSection "Display"
# Viewport 0 0
# Depth 15
#EndSubSection
#SubSection "Display"
# Viewport 0 0
# Depth 16
#EndSubSection
#SubSection "Display"
# Viewport 0 0
# Depth 24
#EndSubSection
EndSection


Module Size Used by
i830 69796 3
ipv6 212064 8
snd_pcm_oss 49704 0
snd_mixer_oss 17408 1 snd_pcm_oss
ohci_hcd 18436 0
ehci_hcd 27012 0
intel_agp 16540 1
uhci_hcd 27920 0
i8xx_tco 5524 0
snd_intel8x0 32940 1
snd_ac97_codec 64644 1 snd_intel8x0
snd_pcm 80904 2 snd_pcm_oss,snd_intel8x0
snd_timer 21764 1 snd_pcm
snd_page_alloc 10888 2 snd_intel8x0,snd_pcm
gameport 3712 1 snd_intel8x0
snd_mpu401_uart 6912 1 snd_intel8x0
snd_rawmidi 21028 1 snd_mpu401_uart
snd_seq_device 7304 1 snd_rawmidi
snd 48484 11 snd_pcm_oss,snd_mixer_oss,snd_intel8x0,snd_ac97_codec,snd_pcm,snd_timer,snd_mpu401_uart,snd_rawmidi, snd_seq_device
soundcore 6752 1 snd
3c59x 35112 0
ds 13572 2
yenta_socket 17536 1
pcmcia_core 52676 2 ds,yenta_socket
l2cap 18820 2
bluetooth 38116 3 l2cap
ndiswrapper 164372 0
i8k 5520 1
agpgart 26920 4 intel_agp
button 5016 0
ac 3596 0
evdev 7168 0
battery 7948 0
acpi 4364 0
freq_table 3588 1 acpi
processor 14256 1 acpi
psmouse 17544 0
reiserfs 218576 1

Try downloading the i810 and common modules located here (pick the latest ones)

http://dri.freedesktop.org/snapshots/

and installing them. These represent that latest development versions of the i810 drivers, including DRI. I had to do something similar (except in my case it was i915) in order to get both 1400x1050 and DRI working on my Dell Latitude D610.

Fine !

Now i try your solution....


So, i compiled and installed those modules but Directed rendering is switched off.
I read my lsmod output and when xorg is already started i810
is not running.

Do you know anything about ?

Try modprobing the correct module ...

#/sbin/modprobe i810

IIRC, I ended up adding that line to my /etc/rc.d/rc.local file so that the correct module loaded every time I rebooted my laptop.

I've already try it