On 2017-08-04, Jape Person <jap...@comcast.net> wrote: > A few weeks ago a CUPS upgrade to our Debian testing systems started > showing a new driver for our Brother MFC-9340CDW in print dialogs and in > the CUPS printer list and in the system-config-printer utility. > > You'd think that was good news, but we've been unable to find any way to > make the queue for this "driverless" instance of the printer function > properly. >
Just very quickly found this bug that seems to be relevant to your case, Jape. As you didn't describe the "garbled" condition of your printouts with the "driverless" driver I can't be sure but it seems a fair guess. Apparently a resolution dpi error (reported as 600x2dpi--firmware bug?--and set that way by cups in the PPD. Workaroundable by modifying the PPD manually as explained in the thread). BTW at the Brother site I think they're recommending updating the firmware for this printer (maybe not for the reasons explicited here). HTH. https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=868360 -- “Certitude is not the test of certainty.” --Oliver Wendell Holmes, Jr.