I gave up, reinstalled the previous version, now all is well.
Everything works fine with HPLIP-3.15.6, printing does not work with HPLIP-3.15.7.
NOTHING changed except the version of HPLIP.
I gave up, reinstalled the previous version, now all is well.
Everything works fine with HPLIP-3.15.6, printing does not work with HPLIP-3.15.7.
NOTHING changed except the version of HPLIP.