The Composite extension is not available

Two things.
One, check if you have a 3d acceleration functions in your system. You can check it with the follow command in a terminal/console
glxinfo | grep direct
If you see Yes, you have a 3D acceleration
If you have a ATI vga graphics card you need to put this other command:
fglxinfo | grep direct

The second thing that you need check if the xorg.conf file.
Example at termial/console:
cat /etc/X11/xorg.conf | grep Composite
(if it don't answer nothing, you need Put this Options on this file:)

Section "Extensions"
        Option "Composite" "Enable"
EndSection

Put this lines at the end of file (create a previous copy of original file).

glxinfo | grep direct

this thing replies yes....

cat /etc/X11/xorg.conf | grep Composite.....when i put this i get as below......

Option "Composite" "0"

......ONCE AGAIN........but i cannot get back me desktop effects.....plz help me out....i have ati x300 graphic card......plzz help me out...

You can follow this guide HowTO:

http://www.howtoforge.com/ubuntu_feisty_beryl_ati_radeon

i did as it was said there.............but.................when i restarted i could not login and there was error messsege......................my ati graphix card is x300 but the matter in tht article is x9,500............i just reinstalled complete linux psat hours......

                    now i get my desktop effets working but in restricted drivers i found tht atix300 is not in use..........please help me out.......thnks for ur fast replies..............i am grateful to you...........

one more question is that in restricted drivers it is shown that ati is not in use........

but that command is like as follows...

azaruddin@azaruddin-IBM:~$ glxinfo | grep vendor
server glx vendor string: SGI
client glx vendor string: SGI
OpenGL vendor string: Tungsten Graphics, Inc.
azaruddin@azaruddin-IBM:~$

....what does this means.....

If you are running with Beryl/Compiz (Desktop Effects) you don't worry with it info.

i just want to make clear that..... i just installed ubuntu again...........right now when i go throught restircted drivers i found out tht ati 3d acceleration is disabled.........however i get desktop effects to work............so what do u thnk................if i enable restricted drivers then i will loose my desktop effects......plzz findout a solution for this.....

hey dude, I have message that says: cat/etc/X11/xorg.conf: No such file or directory PLS HELP

it is not "cat/etc/X11/xorg.conf"
it should be "cat /etc/X11/xorg.conf"

The Composite extension is not available
message is displayed when I enable extra features in visual effects

 "Composite" "0"
So what i have to do next?

i am having the same problem and i am also brand new to ubuntu. I cannot change the visual effects without it saying "The Composite extension is not available" Also my backround and all other images are pixelated.
Thanks in advance

frank@frank-desktop:~$ cat /etc/X11/xorg.conff | grep Composite
cat: /etc/X11/xorg.conff: No such file or directory
frank@frank-desktop:~$ cat /etc/X11/xorg.con
cat: /etc/X11/xorg.con: No such file or directory
frank@frank-desktop:~$ cat /etc/X11/xorg.conf
# xorg.conf (X.Org X Window System server configuration file)
#
# This file was generated by dexconf, the Debian X Configuration tool, using
# values from the debconf database.
#
# Edit this file with caution, and see the xorg.conf manual page.
# (Type "man xorg.conf" at the shell prompt.)
#
# This file is automatically updated on xserver-xorg package upgrades *only*
# if it has not been modified since the last upgrade of the xserver-xorg
# package.
#
# Note that some configuration settings that could be done previously
# in this file, now are automatically configured by the server and settings
# here are ignored.
#
# If you have edited this file but would like it to be automatically updated
# again, run the following command:
# sudo dpkg-reconfigure -phigh xserver-xorg

Section "Device"
 Identifier "Configured Video Device"
 BusID "PCI:0:16:0"
 Option "UseFBDev" "true"
EndSection

Section "Monitor"
 Identifier "Configured Monitor"
EndSection

Section "Screen"
 Identifier "Default Screen"
 Monitor "Configured Monitor"
 Device "Configured Video Device"
EndSection
frank@frank-desktop:~$