Ad 1) It could also be that the PPD file is the right one (the one which is inteded for my printer) and that the content of the PPD is buggy, maybe a single property is wrong.
Ad 2) My printer model is Color LaserJet Pro MFP M280nw as stated in bug header and I would guess m28-m31 would cover mode numbers starting with M28 which "M280nw" does. So from that point of view it doesn't look like the wrong PPD to me.
Well
Ad 1) It could also be that the PPD file is the right one (the one which is inteded for my printer) and that the content of the PPD is buggy, maybe a single property is wrong.
Ad 2) My printer model is Color LaserJet Pro MFP M280nw as stated in bug header and I would guess m28-m31 would cover mode numbers starting with M28 which "M280nw" does. So from that point of view it doesn't look like the wrong PPD to me.
$ lpinfo -m | grep -i m278
gives nothing
I connect via USB.