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Brother DCP-7055 scanner: where do I put vendor/product ID?

rated 0 times [ 1] [ 0] / answers: 1 / hits: 2138 / 2 Years ago, tue, august 23, 2022, 8:28:09

Now after updating from 13.10 to Ubuntu 14.04, my Brother DCP-7055 still prints, but still does not scan. I've reinstalled the Brother drivers. Twice. (I'm now using 0.4.2-3)

lsusb says:

Bus 003 Device 011: ID 04f9:0248 Brother Industries, Ltd DCP-7055 scanner/printer

Whereas scanimage -L says

device `brother4:bus2;dev1' is a Brother DCP-7055 USB scanner

So I tried (as root):

ln -s /dev/bus/usb/003/011 /dev/usb/scanner

So, now instead of "failed to open" sane-find-scanner -v gives me:

...

searching for USB scanners:

checking /dev/usb/scanner... open ok, but vendor and product could NOT be identified

found USB scanner (UNKNOWN vendor and product) at device /dev/usb/scanner

....

  # Your USB scanner was detected. It may or may not be supported by

  # SANE. Try scanimage -L and read the backend's manpage.

  # `UNKNOWN vendor and product' means that there seems to be a scanner at this

  # device file but the vendor and product ids couldn't be identified.

  # Currently identification only works with Linux versions >= 2.4.8. You may

  # need to configure your backend manually, see the backend's manpage.

I feel I might have taken an important step forward, but I don't know what to do next? Is there a command to find out the product/device ID? And, if/when I find that, I guess there is a configuration file somewhere where I stick it?

UPDATE

Duh! I just noticed lsusb was giving me vendor ID (04f9) and product ID (0248). But I still don't know where to stick them. Thanks!

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nquirewha

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2 Years ago

answered 2 Years ago odyroc · Accepted Answer

I have got the same problem as you; and although I do know what config file you need to insert vendor and product ID, I fear it will not be enough to get rid of the "Invalid Argument" error. (At least, I am still stuck with it.)

The file you want to edit is /lib/udev/rules.d/40-libsane.rules. Here, you need to insert the following line:

# Brother scanners

ATTRS{idVendor}=="04f9", ATTRS{idProduct}=="0248", ENV{libsane_matched}="yes"

(Actually, most tutorials I found so far content themselves with `ATTRS{idVendor}=="04f9", ENV{libsane_matched}="yes"'. Your posting here was the first time I've seen a product ID to try.)

My current status: After adding my own user account to the "lp" group, I am at least able to start xsane again. But on clicking the "scan" button, I only receive an "Invalid Argument" error message.