[sane-devel] Canon MP250 detected by sane-find-scanner but not by scanimage

Gernot Hassenpflug aikishugyo at gmail.com
Fri Jul 22 14:07:46 UTC 2011

On Fri, Jul 22, 2011 at 11:00 PM, Noe Nieto <nnieto at noenieto.com> wrote:
> I have a Canon MP250 device. The manpage of the pixma backend states that
> this device is supported, but when trying to use scanimage, there's no
> scanner detected.
> Test case:
> Plug the scanner, and check lsusb and /var/log/messages:
> # dmesg

- sane-find-scanner only checks libusb can detect the scanner, not if
SANE's backends are working or not. So all is well on that front at

- check if pixma_mp150.c has this scanner listed in it. At the tip f
the file the USB ID, at the bottom of the file the properties.

- check if you compiled correctly (local compiles by default go into
/usr local so your scanimage should be running from there)

- run scanimage as root to see if it might be a permissions issue

HTH as a start,
Gernot Hassenpflug

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