Brother DCP-150C scans only when running xsane as a root

[Peter Makowski]

Brother DCP-150C scans only when running xsane as a root. When running as a normal user an error occurs (Input/Output error).

Drivers installed from: http://solutions.brother.com/linux/sol/printer/linux/sane_drivers.html

[FriedChicken (domlyons)]

Confirmed for DCP-120C, too.

Seems to be a udev-problem.

[Otto Kekäläinen (otto)]

The problem is that by default normal users are not given access to the device.

Adding this rule to udev (e.g. at the end of file /etc/udev/rules.d/40-permissions.rules) puts all Brother devices into group "scanner" so that all users who are in the group "scanner" are able to scan. All human users in Ubuntu are by default members of group "scanner".

#Brother
SYSFS{idVendor}=="04f9",GROUP="scanner"

This rule would also solve bug https://bugs.launchpad.net/ubuntu/+source/sane-backends/+bug/173344

[Peter Makowski (petermakowski)]

Occurs with DCP-135C, too.

[Fabián Rodríguez (magicfab)]

I believe this is a duplicate of Bug #217571.

I posted a workaround for Jaunty in it, different from Otto. Take a look and comment/mark as duplicate as deemed appropriate.

[Fabián Rodríguez (magicfab)]

@Otto, I tried your workaround in Jaunty and it didn't work.

[Otto Kekäläinen (otto)]

My fix does not work i 9.04 probably because the udev config is different. I Jaunty the udev basic conf relies in the file /lib/udev/rules.d/50-udev-default.rules

Although I am not sure - I haven't installed Jaunty yet so I haven't tested this theory.

[penalvch (penalvch)]

Piotr Makowski (Aviary.pl), thank you for reporting this and helping make Ubuntu better.

As per https://wiki.ubuntu.com/Releases your release is EOL.

If you have an issue in a supported release (ex. 16.04) please file a new report, and feel free to subscribe me to it.