If it's too short, I'll paste the full log. > Does it happen with simple password? like if you "sudo passwd <user>" and set "one" does it log in using "ONE"?
Yes > "dpkg -l | grep pam" ii libpam-cap:amd64 1:2.25-1.2 amd64 POSIX 1003.1e capabilities (PAM module) ii libpam-gnome-keyring:amd64 3.28.0.2-1ubuntu1.18.04.1 amd64 PAM module to unlock the GNOME keyring upon login ii libpam-modules:amd64 1.1.8-3.6ubuntu2.18.04.1 amd64 Pluggable Authentication Modules for PAM ii libpam-modules-bin 1.1.8-3.6ubuntu2.18.04.1 amd64 Pluggable Authentication Modules for PAM - helper binaries ii libpam-runtime 1.1.8-3.6ubuntu2.18.04.1 all Runtime support for the PAM library ii libpam-systemd:amd64 237-3ubuntu10.21 amd64 system and service manager - PAM module ii libpam0g:amd64 1.1.8-3.6ubuntu2.18.04.1 amd64 Pluggable Authentication Modules library ii thunderbird 1:60.6.1+build2-0ubuntu0.18.04.1 amd64 Email, RSS and newsgroup client with integrated spam filter -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1828116 Title: Password works uppercase and lowercase To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gdm3/+bug/1828116/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs