The appearance and placement of the buttons is actually dynamically configurable. Please try this command to restore the default button layout:
gsettings reset org.gnome.desktop.wm.preferences button-layout And then verify: gsettings get org.gnome.desktop.wm.preferences button-layout 'close,minimize,maximize:' ** Changed in: compiz Status: New => Incomplete ** Changed in: compiz (Ubuntu) Status: New => Incomplete -- You received this bug notification because you are a member of compiz packagers, which is subscribed to compiz in Ubuntu. https://bugs.launchpad.net/bugs/1098788 Title: There is no minimize and maximize button on the border of windows To manage notifications about this bug go to: https://bugs.launchpad.net/compiz/+bug/1098788/+subscriptions _______________________________________________ Mailing list: https://launchpad.net/~compiz Post to : compiz@lists.launchpad.net Unsubscribe : https://launchpad.net/~compiz More help : https://help.launchpad.net/ListHelp