By the way, I solved the same problem (which was present in 12.04 for a Canon 650U) as described in https://bugs.launchpad.net/ubuntu/+source/xsane/+bug/40682/comments/21
By the way, I solved the same problem (which was present in 12.04 for a Canon 650U) as described in https:/ /bugs.launchpad .net/ubuntu/ +source/ xsane/+ bug/40682/ comments/ 21