I just the lenovo computers, Windows 10, 20 version h2, AMD graphics, install ubumtu18.04 LTS graphical interface, when I was in command line, enter sudo compiz occur when the following contents:
Compiz (core) - Info: Loading the plugin: core
Compiz (core) - Info: Starting the plugin: core
Compiz (core) - Fatal: Could 't open the display
Compiz (core) - Info: Stopping the plugin: core
Compiz (core) - Info: Unloading plugin: core
Please advice!