[sane-devel] Completely supported scanner Canon CanoScan Lide 300 doesn't work

[Simon Matter]

> Hi
>
> I've got a new flatbed scanner, a Canon CanoScan Lide 300. I had a Canon
> CanoScan Lide 220 before, which worked mostly fine. But then the lamp
> broke.
> Both are listed as "completely" supported on the SANE devices page. But
> that
> Lide 300 doesn't work.
>
> I'm using Ubuntu 20.04.1 with SANE version 1.0.14-15 (that's the version
> of
> the "sane" package).
>
> "xsane" says:
> Failed to open device 'pixma::04A91913': Device busy"
>
> "simple-scan" first asks for which scanner to use. It provides a list with
> one element, which is the correctly recognized CanoScan Lide 300. When
> trying to scan, this message appears: "Failed to scan. Unable to connect
> to
> scanner"
>
> "scanimage -L" says:
> device `pixma:04A91913' is a CANON CanoScan LiDE 300 multi-function
> peripheral
>
> I'm wondering why the Lide 300 is listed as a "multi-function peripheral".
> It's not multi-function. It's just a flatbed scanner. Maybe those buttons
> at the scanner are meant (?).
>
> "scanimage --device=pixma > image.pnm" says:
> scanimage: open of device pixma failed: Device busy
>
> "lsusb" says:
> Bus 006 Device 002: ID 1058:25ed Western Digital Technologies, Inc. My
> Book 25ED
> Bus 006 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
> Bus 005 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
> Bus 004 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
> Bus 003 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
> Bus 002 Device 002: ID 05e3:0612 Genesys Logic, Inc. Hub
> Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
> Bus 001 Device 003: ID 046d:c05b Logitech, Inc. M-U0004 810-001317 [B110
> Optical USB Mouse]
> Bus 001 Device 004: ID 04f2:0402 Chicony Electronics Co., Ltd Genius
> LuxeMate i200 Keyboard
> Bus 001 Device 008: ID 04a9:1913 Canon, Inc. USB2.0 Hub
> Bus 001 Device 002: ID 05e3:0610 Genesys Logic, Inc. 4-port hub
> Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
>
> The Lide 220 and the Lide 300 use different backends. For the 220 it's
> "genesys", for the 300 it's "pixma".
>
> I've also found a "driver" from Canon for the Lide 300. But it's *not* a
> SANE backend, and it doesn't work either.
>
> Any idea what's wrong?
>
> Regards,
> Volker
>

I don't see the scanner in the lsusb output?

Is the scanner connected to an USB3 port? If so, could you test it on a
USB2 port?

Regards,
Simon