Change Driver dialog for printer hangs
Solution 1:
This bug seems to have been reported here https://bugs.launchpad.net/ubuntu/+source/system-config-printer/+bug/1883370
There is a fix provided by Ikuya Awashiro https://launchpad.net/~ikuya-fruitsbasket/+archive/ubuntu/scp
I tried his PPA and it seemed to have fixed the hang issue: Available drivers can be shown and chosen, no more useless hang.