In the latest gdm the authentication method buttons (password, fingerprint, etc) show up when clicking the user's name and disappear before they can be used.
So what's going on here is,
- you don't have smartcards enabled
- you don't have a fingerprint reader
The authentication buttons show up briefly because you do have fingerprint authentication enabled, but then fails shortly there after since you don't have a reader.
The gdm code won't show the authentication method buttons if you only have one authentication method available.
We could probably avoid showing the buttons at all if you don't have a fingerprint reader. That would likely require changes to fprintd and the gdm fingerprint plugin.
It's not blocker material at this point, though.
This request was evaluated by Red Hat Product Management for inclusion
in a Red Hat Enterprise Linux maintenance release. Product Management has
requested further review of this request by Red Hat Engineering, for potential
inclusion in a Red Hat Enterprise Linux Update release for currently deployed
products. This request is not yet committed for inclusion in an Update release.
Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.
For information on the advisory, and where to find the updated
files, follow the link below.
If the solution does not work for you, open a new bug report.