New answers tagged gdm
Instead of hiding all but one user why can you not create just 1 user for all lab pc's, and install that user locally on each machine? Then enable sharing this way: If a user is on the LDAP Server allow the user to login to devices etc while logged in as guest, by providing their LDAP credentials, only when needed instead of allowing them to login via GDM
To answer the stated question, you can make sure whether the Xserver is running by issuing command: ps -C Xorg
Solved after long try by just making live cd of kali linux and copy libudev.so.0.13.0, libudev.so.0(link) and paste it in /lib/x86_64-login-gnu/.
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