On Mon 10 Apr 2017 at 19:05:19 +0200, Olivier Aubert wrote: > Actually, my wording was wrong: the Brother drivers do not use > gutenprint and gutenprint does not support the MFC7420, as far as I can > read the source/doc.
Indeed. There is no declared support for the MFC7420. > I just can acknowledge that the printer stopped working after upgrading > gutenprint to 5.2.11 (with a gutenprint-related error message), and > that downgrading gutenprint solved the issue. You will have a PPD in /etc/cups/ppd which gives the capabilities of your printer. Please post the outputs of grep -i Nickname /etc/cups/ppd/your_ppd and grep -i cupsfilter /etc/cups/ppd/your_ppd Regards, Brian.
