Comment 26 for bug 83957

Confirm this on Kubuntu 11.10.

Tried to set usb autosuspend as per https://bugs.launchpad.net/ubuntu/+source/sane-backends/+bug/85488/comments/459
But no luck.

lsusb and sane-find-scanner seem to find the scanner, and sometimes scanimage -L succeeds too.

$ sane-find-scanner
[...]
found USB scanner (vendor=0x04a9 [Canon], product=0x220e [CanoScan], chip=LM9832/3) at libusb:005:003
[...]

$ scanimage -L
device `plustek:libusb:005:003' is a Canon CanoScan N1240U/LiDE30 flatbed scanner

$ scanimage
scanimage: no SANE devices found

$ uname -a
Linux linus 3.0.0-16-generic #29-Ubuntu SMP Tue Feb 14 12:49:42 UTC 2012 i686 i686 i386 GNU/Linux

$ lsusb
Bus 005 Device 003: ID 04a9:220e Canon, Inc. CanoScan N1240U/LiDE 30