In case anybody cares, I have the same issue with my good old HP DeskJet
880C, which worked perfectly until upgrading to 9.04, working fine for
more than ten years...

I had to change the way it is accessed for it to start working at all. Thanks 
to my backup, I can tell you the the old URI was:
DeviceURI usb://HP/DESKJET%20880C?serial=ES91P131MRFA
...and the new is:
DeviceURI hp:/usb/DeskJet_880C?serial=ES91P131MRFA

AFAIK, the old URI scheme does not work anymore...
The printer works for some time, then something goes pear shaped and I have 
PoffPon the printers's, I suppose to reset its USB stack.

-- 
package linux-image-2.6.28-11-generic 2.6.28-11.42 failed to install/upgrade: 
subprocess post-installation script returned error exit status 3
https://bugs.launchpad.net/bugs/364435
You received this bug notification because you are a member of Ubuntu
Bugs, which is subscribed to Ubuntu.

-- 
ubuntu-bugs mailing list
ubuntu-bugs@lists.ubuntu.com
https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs