CUPS

Raised as a usability problem by 9 people on Hacker News over 9 years (2013–2021), in 8 threads.

People raised many different problems with CUPS, but no single problem has yet been raised by 3 people in 3 different months and threads.

Unreviewed issues were grouped by machine: Claude Haiku labelled each comment as a usability complaint, named what it's about and summed up the problem in a line, and a small model grouped similar problems. Nobody has checked them by hand. Expect mistakes.

The newest 12 complaints

Must remember exact lp syntax to select black-and-white printing2021-08-04
Submitting a sequence of print jobs incurs a 3-5 second delay between jobs2020-12-22
Add-printer dialog is hostile; autodiscovery often fails and end users struggle2020-10-15
Printer didn't work with CUPS until setup, and scanning never worked2020-10-15
Setting up a printer is non-trivial and often requires digging into internals2020-10-15
Printer must be added manually through a hostile dialog that many users would give up on2020-10-15
Adding network printers fails or needs expert knowledge like manual protocol and IP setup2020-10-15
Printer becomes unusable when its IP address changes, even with a known hostname2019-11-22
Shell command names are confusing, e.g. cancel controls print jobs2018-08-05
Multiple similar drivers for one printer, unclear which is best, must try each2016-05-18
Complex and bewildering UI that is hard to make sense of2015-08-02
Getting printers working on Debian takes several extra manual steps2013-02-11