Composite error in Angstrom linux


I have successfully installed Angstrom Linux on my Beagle Xm Rev C
board. Angstrom linux is booting fine but on every boot it gives me a
Composite error
dialog box saying

"Your screen is not in 24/32 bit display mode. This is required to be
your default depth setting for compositor to work properly"

my composite is disabled but still i get the message. I want to get
rid of the above message which comes on every boot. As my final
application will not have keyboard or mouse.

Thanks in Advance