luca@ubuntu:~/Scrivania$ compiz --replace
Nessun valore impostato per "/apps/compiz-1/general/allscreens/options/active_plugins".
Backend     : gconf
Integration : true
Profile     : default
Adding plugins
Initializing core options...done
Initializing bailer options...done
Initializing detection options...done
Initializing composite options...done
compiz (opengl) - Fatal: GLX_EXT_texture_from_pixmap is missing
Initializing opengl options...done
Initializing decor options...done
Initializing mousepoll options...done
Initializing vpswitch options...done
Initializing animation options...done
Initializing snap options...done
Initializing expo options...done
Initializing move options...done
Initializing place options...done
Initializing gnomecompat options...done
compiz (wall) - Error: Couldn't create cairo context for switcher
compiz (wall) - Error: Couldn't create cairo context for switcher
compiz (wall) - Error: Couldn't create cairo context for switcher
compiz (wall) - Error: Couldn't create cairo context for switcher
compiz (wall) - Error: Couldn't create cairo context for switcher
compiz (wall) - Error: Couldn't create cairo context for switcher
compiz (wall) - Error: Couldn't create cairo context for switcher
compiz (wall) - Error: Couldn't create cairo context for switcher
Initializing wall options...done
compiz (wall) - Error: Couldn't create cairo context for switcher
compiz (wall) - Error: Couldn't create cairo context for switcher
compiz (wall) - Error: Couldn't create cairo context for switcher
compiz (wall) - Error: Couldn't create cairo context for switcher
compiz (wall) - Error: Couldn't create cairo context for switcher
compiz (wall) - Error: Couldn't create cairo context for switcher
compiz (wall) - Error: Couldn't create cairo context for switcher
compiz (wall) - Error: Couldn't create cairo context for switcher
compiz (wall) - Error: Couldn't create cairo context for switcher
compiz (wall) - Error: Couldn't create cairo context for switcher
compiz (wall) - Error: Couldn't create cairo context for switcher
compiz (wall) - Error: Couldn't create cairo context for switcher
Initializing ezoom options...done
Initializing workarounds options...done
Initializing staticswitcher options...done
Initializing resize options...done
Initializing fade options...done
Initializing scale options...done
Initializing session options...done
Setting Update "run_command_terminal_key"
Setting Update "fullscreen_visual_bell"
Starting gtk-window-decorator

(gtk-window-decorator:1547): Gdk-CRITICAL **: IA__gdk_drawable_set_colormap: assertion `cmap == NULL || gdk_drawable_get_depth (drawable) == cmap->visual->depth' failed

Gdk-ERROR **: The program 'gtk-window-decorator' received an X Window System error.
This probably reflects a bug in the program.
The error was 'BadWindow (invalid Window parameter)'.
  (Details: serial 2321 error_code 3 request_code 38 minor_code 0)
  (Note to programmers: normally, X errors are reported asynchronously;
   that is, you will receive the error a while after causing it.
   To debug your program, run it with the --sync command line
   option to change this behavior. You can then get a meaningful
   backtrace from your debugger if you break on the gdk_x_error() function.)
aborting...
Trace/breakpoint trap