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akxer
Asked: 2018-04-29 03:01:45 +0800 CST

Authentication Problem on first Loging attempt 18.04

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When I start my system and try logging in to my user in the first attempt event thought the password is correct the screen goes blank just showing the background and after a long while it shows Authentication Error.

Why is this happening and how do I fix it?

Update 1:

This is all I could dig up from syslogs

Apr 28 15:05:35 akxer-Alienware-15-R3 org.gnome.Shell.desktop[2155]: polkit-agent-helper-1: pam_authenticate failed: Authentication failure
Apr 28 16:26:06 akxer-Alienware-15-R3 systemd[1]: Stopping Authorization Manager...
login login-screen 18.04

1 Answers

  1. I had this issue on Ubuntu 18.04 too. I solved it by uncommenting WaylandEnable=false in /etc/gdm3/custom.conf (forcing GDM to run under X11).

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