The workaround is to not use light-locker for screenlocking, as it does VT switches. Killing the other xserver process obviously won't help, because that's where the (lightdm-)greeter sits that is expecting authentification.
The workaround is to not use light-locker for screenlocking, as it does VT switches.
Killing the other xserver process obviously won't help, because that's where the (lightdm-)greeter sits that is expecting authentification.