I am also experiencing this issue with a Canon LiDE 30. The command scanimage -L returns a "No scanner found" message when running as a normal user, but it does return something when run as root. I am the first user to be created, and I am already in the scanners group.
My output of scanimage -L when run as root: device `plustek:libusb:003:002' is a Canon CanoScan N1240U/LiDE30 flatbed scanner -- [Hardy]Xsane needs root to operate scanner https://bugs.launchpad.net/bugs/205496 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