In summary:
=========
The sample pdf file of this bug prints well if pdftops is replaced by pdftocairo. I still find that printing is slow for my Linux Mint test page. Passing the LanguageLevel to "2" in PPD seems finally to be worse, at least for this test page. Maybe I underestimate the complexity of this test page, but it prints quickly with a generic PCL6 Guntenprint PPD.
Time will tell if pdftocairo is an "acceptable" fix, since I have no official PCL6 alternative (for this printer).
In summary:
=========
The sample pdf file of this bug prints well if pdftops is replaced by pdftocairo. I still find that printing is slow for my Linux Mint test page. Passing the LanguageLevel to "2" in PPD seems finally to be worse, at least for this test page. Maybe I underestimate the complexity of this test page, but it prints quickly with a generic PCL6 Guntenprint PPD.
Time will tell if pdftocairo is an "acceptable" fix, since I have no official PCL6 alternative (for this printer).