Fritz,
there is upstream issue https://bugs.launchpad.net/hplip/+bug/1772544 about it, would you mind reporting there about non functional m27-m281 printers?
Fritz,
there is upstream issue https:/ /bugs.launchpad .net/hplip/ +bug/1772544 about it, would you mind reporting there about non functional m27-m281 printers?