Tested using: antergos-2014.04.27-x86_64.iso
I was suprised to see that Antergos new login screen to be lightdm instead of the normal gdm when choosing a “Gnome” installation. This new theme looks great, however this installation is not configured to properly lock the screen using the usual shorcuts: super+L or ctrl+alt+L
Also, i should point out that the default keyboard gnome settings application does not respect any value added for the “lock screen” keyboard shorcut combination. Perhaps it is trying to trigger a non-existent gdm call.
The lock screen can be manually triggered with the command:
This issue should be fixed before final release.