Hello, I configured Microtek ScanMaker3600 succesfully under 5.3-Release. So far, so good. In between, I upgraded to -stable and suddenly had to notice that when starting the prescan, the bulb isn't moving but keeps kind of knocking at the front of the case. The scanner uses the sm3600 sane-backend, libusb is 0.1.7_1, which appears to be reasonably new. Controller /dev/usb0: addr 1: full speed, self powered, config 1, UHCI root hub(0x0000), VIA(0x0000),rev 1.00 port 1 addr 2: full speed, self powered, config 1, product 0x40ca(0x40ca), Microtek(0x05da), rev 0.00 port 2 powered Anyone an idea what might have happened? Greets, Dorian