Can not get Compiz to work what I do.

compiz --replace

Two dashes.

Can you give the output of:

sudo lshw -C display

Thanks

RYAN two dashes doesnt make a difference.

actionparsnip the output of sudo lshw -C display is:

PCI (sysfs)

SCSI

RYAN two dashes doesnt make a difference.

actionparsnip the output of sudo lshw -C display is:

PCI (sysfs)

SCSI

Ok try:

lspci | grep -i vga

On typing lspci | grep -i vga I get the following:

00:05.0 VGA compatible controller: nVidia Corporation C51G [GeForce 6100] (rev a2)

press alt+f2
type: compiz --replace
press enter

The output you gave looks fine and it should work. The command has 2 dashes which is why you get "-replace is not an option"

Started to do something then stopped with this out put:

Checking for Xgl: not present.
xset q doesn't reveal the location of the log file. Using fallback /var/log/Xorg.0.log
Detected PCI ID for VGA:
Checking for texture_from_pixmap: present.
Checking for non power of two support: present.
Checking for Composite extension: present.
Checking screen 1Comparing resolution (1024x768) to maximum 3D texture size (4096): Passed.
Checking for Software Rasterizer: Not present.
Checking for nVidia: present.
Checking for FBConfig: present.
running under gnome seesion, checking for gnomecompat
Checking for Xgl: not present.
/usr/bin/compiz.real (video) - Warn: No 8 bit GLX pixmap format, disabling YV12 image format

Perfect, looks like its running to me now. The last line is a warning only so is ok.

close the terminal and press ALT+F2
type: compiz --replace
press enter
press ALT+F2
type: ccsm
press enter
enable some plugins to test (like wobbly windows)

Nope screen still only blinks for a second, no plug ins working, terminal output:

Checking for Xgl: not present.
xset q doesn't reveal the location of the log file. Using fallback /var/log/Xorg.0.log
Detected PCI ID for VGA:
Checking for texture_from_pixmap: present.
Checking for non power of two support: present.
Checking for Composite extension: present.
Checking screen 1Comparing resolution (1024x768) to maximum 3D texture size (4096): Passed.
Checking for Software Rasterizer: Not present.
Checking for nVidia: present.
Checking for FBConfig: present.
running under gnome seesion, checking for gnomecompat
Checking for Xgl: not present.
/usr/bin/compiz.real (video) - Warn: No 8 bit GLX pixmap format, disabling YV12 image format
inotify_add_watch: No such file or directory
/usr/bin/compiz.real (cube) - Warn: Failed to load slide: /usr/share/gdm/themes/Human/ubuntu.png

try:

sudo apt-get --reinstall install ubuntu-artwork

You can also just download a png file and put it in the right place with the right name.