Same scanner, same problem on Dapper (fresh install from live cd) - read about this problem on Ubuntu, FC5.
The solution provided here works for me, too (THANK YOU). Did not change anything else (sane config e.g.,...), btw sane does not seem to be installed (aptitude show) !? libsane 1.0.17-1ubuntu4 xsane 0.97-4ubuntu6 sane-utils 1.0.17-1ubuntu4 -- Canon630u scanner hangs and shows device busy https://launchpad.net/bugs/26812 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
