Cups seems broken under 12.04 LTS...

[dragonfly41]

My HP LaserJet 2100M - which previously worked reliably on ubuntu 10.10 - and windows in dual boot - is now not even seen by ubuntu 12.04.1 (installed via upgrades).

"no local printers found" in printers.

I also want to add Canon ip2600 as a second printer (not available today for testing). I've added this in case Canon ip2600 is also not found.

https://launchpad.net/~michael-gruz/...ve/canon-trunk

sudo add-apt-repository ppa:michael-gruz/canon-trunk

Printers are attached via USB port

Is there any workaround?

[Edit]

I installed HPLIP
HP Linux Imaging and Printing System (ver. 3.12.2)
Printer/Fax Setup Utility ver. 9.0


and this utility reports .

error: No devices found on bus: usb