I'm not sure what's suppose to work right now but on trying to run compiz or beryl, I get the following BadAlloc error:

atippett@actlap:~$ compiz --replace
X Error of failed request: BadAlloc (insufficient resources for operation)
Major opcode of failed request: 143 (GLX)
Minor opcode of failed request: 3 (X_GLXCreateContext)
Serial number of failed request: 16
Current serial number in output stream: 17
/usr/bin/compiz.real: No GLXFBConfig for default depth, this isn't going to work.
/usr/bin/compiz.real: Failed to manage screen: 0
/usr/bin/compiz.real: No manageable screens found on display :0.0