Laptop finger scanner no longer activated after upgrading to F25

[Sam Varshavchik]

After upgrading to Fedora 25, the fingerprint reader no longer gets  
activated.

The laptop boots to lightdm, which merely prompts for my password, without  
activating the fingerprint reader.

Additionally, starting virt-manager to access my virtual machines no longer  
activates the fingerprint reader either, but only prompts for the password.

I reran fprintd-enroll without any issues. fprintd-enroll activated the  
fingerprint reader, and did its usual thing. But the fingerprint scanner is  
still not being used for authentication.