I figured out the problem. When I upgraded packages today, it uninstalled fprintd-clients but did not install libpam-fprintd. /etc/pam.d/gdm-fingerprint says that gdm is supposed to open pam_fprintd.so, but it couldn't because it wasn't available any longer.
I have no understanding of the intricacies of all the package dependencies that caused this broken situation to be allowed to occur. I will, however, mention that previous to today's package upgrade, I had open-fprintd installed, _not_ fprintd, because the fprintd that ships with Ubuntu is incompatible with my fingerprint reader (Lenovo Thinkpad X1 Carbon 6th gen). I don't know whether this is relevant to the problem that occurred here. To fix this, I had to uninstall open-fprintd (which means I can no longer use my fingerprint reader) and install libpam-fprintd, which pulled in the fprintd package along with it even though that's useless to me since that fprintd doesn't work with my reader. I am now unable to use open-fprintd because it conflicts with the fprintd package but I can't uninstall fprintd because that will cause libpam-fprintd to be uninstalled as well. But I'm going to open a separate ticket about that, since that's a different issue from the fact that today's upgrade made my system unusable as described above. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1917175 Title: gdm login screen says "Something went wrong please try again" three times and sends me back to the login screen when I'm not typing anything To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gdm3/+bug/1917175/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
