I have a Brother MFC-7420, which also works as a scanner. I have attached this machine to a computer running Ubuntu 12.04 LTS 64bit via USB.
I installed the following package:
Now when I start
xsane, the device is detected. However, when I try to scan or run a preview scan, I get the message
Could not start scanner: Invalid Argument. The same problem exists if I run
xsane as root, so I don't think it's a privilege problem.
There's no output on the console while running
xsane (see screenshot below). The dialog box showing the error appeared just after pressing the "scan" button in
What can I do to get this scanner running?