I have the same Problem with a Prolific PL2305 adapter cable. It turns out to be a kernel problem due to a poor design in the printer class spec. I sent a Patch to lkml [1]. It fixes the discovery problem of cups. Maybe you want to reassign the bug to the kernel package. Matthias Dellweg
[1] http://lkml.org/lkml/2011/9/25/57 -- To UNSUBSCRIBE, email to debian-bugs-dist-requ...@lists.debian.org with a subject of "unsubscribe". Trouble? Contact listmas...@lists.debian.org
