Remove Ubuntu guest/remote login

less than 1 minute read

Ubuntu 18.04 uses a different login system than described below, and does NOT have guest login.

Ubuntu 16.04 / 14.04

Add to /etc/lightdm/lightdm.conf.d/50-unity-greeter.conf

[SeatDefaults] 
allow-guest=false 
greeter-show-remote-login=false

Ubuntu 12.04

Add lines above to /etc/lightdm/lightdm.conf

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