I sorted the problem for my 05ca:1870 in Intrepid. I found the proper way in this discussion on ubuntu forum, I copy here just in case someone needs it.
http://ubuntuforums.org/archive/index.php/t-1014025.html -- [needs-packaging] Ricoh R5U87x Webcam userland tools https://bugs.launchpad.net/bugs/120434 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
