Desktop effects could not be enabled

[guymalka]

hi,
im new with ubuntu and im tring to enable desktop effects
i have ati 4650 and i installed it and still receive the "Desktop effects could not be enabled" massage

this is the outpu after compiz:
Detected PCI ID for VGA:
Checking for texture_from_pixmap: not present.
Trying again with indirect rendering:
Checking for texture_from_pixmap: present.
Checking for non power of two support: present.
Checking for Composite extension: present.
Checking screen 1Comparing resolution (1680x1050) to maximum 3D texture size (4096): Passed.
Checking for Software Rasterizer: present.
Software rasterizer detected, abortingaborting and using fallback: /usr/bin/metacity

what is the problem?

[stlsaint]

Ensure that you are using the recommended driver in System>admin>Hardware menu.

[Gregorybekkers]

U need to install the correct video driver for your videocard before you can use Desktop effects.

[guymalka]

i installed it
how can i check that the installation is OK?

[Gregorybekkers]

are they enabled?

[guymalka]

no

[Gregorybekkers]

make sure it is correctly installed and enabled then you can enable the Desktop effects.