I tested using radeon.modeset=1 radeon.agpmode=8 on the linux kernel 2.6.32-996-generic_2.6.32-996.200912181514_amd64 and 2.6.33-999-generic_2.6.33-999.200912181148_amd64
Compiz on both kernels don't work.
$ compiz --replace
compiz (core) - Fatal: Software rendering detected.
compiz (core) - Error: Failed to manage screen: 0
compiz (core) - Fatal: No manageable screens found on display :0.0
Let re-post it:
I tested using radeon.modeset=1 radeon.agpmode=8 on the linux kernel 2.6.32- 996-generic_ 2.6.32- 996.20091218151 4_amd64 and 2.6.33- 999-generic_ 2.6.33- 999.20091218114 8_amd64
Compiz on both kernels don't work.
$ compiz --replace
compiz (core) - Fatal: Software rendering detected.
compiz (core) - Error: Failed to manage screen: 0
compiz (core) - Fatal: No manageable screens found on display :0.0
Launching fallback window manager
The same output on both.
Any ideas?