Compiz-Check is a script to test if Compiz is able to run on your system/setup and if not, it will tell you the reason why.

Additionally you can use the output of the script to look for support here, which will make it much easier to locate your problem.

To post the output here, use the forum's [CODE] tag (# button)

The test consists mainly of three parts:

  1. List relevant system information
  2. Run several Compiz related checks
  3. Check for problematic hardware and problems with the setup in use.

So the output will eventually look like this:
Gathering information about your system...

 Distribution:          Ubuntu 8.04
 Desktop environment:   GNOME
 Graphics chip:         ATI Technologies Inc RV350 AR [Radeon 9600]
 Driver in use:         radeon
 Rendering method:      AIGLX

Checking if it's possible to run Compiz on your system...

 Checking for texture_from_pixmap...               [ OK ]
 Checking for non power of two support...          [ OK ]
 Checking for composite extension...               [ OK ]
 Checking for FBConfig...                          [ OK ]
 Checking for hardware/setup problems...           [ OK ]
If anything is OK like in this example, your system is most probably able to run Compiz.
In case anything fails, in most cases you will be prompted a reason and ideally a hint how to solve the problem.

Compiz-Check will not run Compiz for you, nor will it do any changes to your system (unless you specifically say so).

Get it here and follow the instructions how to use it:

You can find more about Compiz-Check and my original intention to write it here and here.