X

+Compiz+Nvidia

https://help.ubuntu.com/community/CompositeManager/CompizFusion

If you ran nvidia-settings, then your xorg.conf lost some info. To fix your compiz window decorations (titlebars) with an nVidia graphics card, run

sudo nvidia-xconfig —add-argb-glx-visuals -d 24

then restart X by logging out and back in again and selecting “Restart X Server” from the login menu.

If you want to stop Compiz and start the old window manager (metacity or kwin), just press Alt+F2 and put in the following for Ubuntu

metacity —replace

Alternate syntax if you receive: ‘Window Manager error: Unable to Open X display’
when using the above command. The correct —display= value can be determined by
issuing the ‘who’ command and noting the values in parenthesis at line-end.

metacity —display=:0.0 —replace