When I start scaning, it seems working but makes a "fake" scanning, black rectangle grows simulating a scanner process, but scanner does not start phisically, no lights, scanner head not moving, etc. and then
this is the output of lsusb:
Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub Bus 001 Device 003: ID 8087:0a2a Intel Corp. Bus 001 Device 002: ID 04f2:b56b Chicony Electronics Co., Ltd Bus 001 Device 005: ID 04a9:220d Canon, Inc. CanoScan N670U/N676U/LiDE 20 Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Any ideas? Thx!