I have followed the how to and added a start up to the menu and told it to start at log-in. This shows OK in start up applications how-ever it does not start. I have tried to run compiz --replace in the terminal but get the following:
wilf@lmde ~ $ 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
wilf@lmde ~ $
Can anyone help please.