I have an old CanoScan N640Pex flat bed scanner and a USB-to-parallel port cable through which I can connect it to my PC. Unfortunately neither Simple Scan nor XSane detect the scanner.
I'm running Ubuntu 12.04 (plus updates and backports) with kernel
dmesg tells me this when I plus the cable in:
[256411.641910] usb 7-1: new full-speed USB device number 10 using uhci_hcd [256411.872392] usblp0: USB Bidirectional printer dev 10 if 0 alt 1 proto 2 vid 0x067B pid 0x2305 [256411.872417] usbcore: registered new interface driver usblp
lsusb shows this device for my cable:
Bus 007 Device 010: ID 067b:2305 Prolific Technology, Inc. PL2305 Parallel Port
The device node created is
crw-rw---- 1 root lp 180, 0 Sep 9 17:46 /dev/usb/lp0
There is no extra information from any of these commands when I attach the scanner to the cable and power it on, though.
I suspect I might need to change something in
/etc/sane.d/canon_pp.conf, but I have no idea what to put for the
ieee1284 line, since there is pretty much zero documentation for that parameter.
So how can I get it to work?