ps axu | grep kwin
jindal 5729 0.1 1.4 26212 15300 ? S 14:42 0:01 kwin --replace
jindal 9916 0.0 0.0 2860 692 pts/4 R+ 15:04 0:00 grep kwin
03:04:40@~ $ kill -9 5729 && compiz --replace
libGL warning: 3D driver claims to not support visual 0x4b
/usr/bin/compiz.real: Another window manager is already running on screen: 0
/usr/bin/compiz.real: No manageable screens found on display :0
03:04:48@~ $ Window manager warning: Failed to read theme from file /usr/share/themes/Clearlooks/metacity-1/metacity-theme-1.xml: Failed to open file '/usr/share/themes/Clearlooks/metacity-1/metacity-theme-1.xml': No such file or directory
Window manager warning: Failed to load theme "Clearlooks": Failed to open file '/usr/share/themes/Clearlooks/metacity-1/metacity-theme-1.xml': No such file or directory