I got it working by adding
Section "Extensions"
Option "Composite" "Enable"
EndSectionto the xorg.conf and also adding Option "AddARGBGLXVisuals" "True" to the "Device" section. -- gtk-window-decorator does not display borders https://launchpad.net/bugs/88589 -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
