A workaround has been discovered: to make printer work again, add /etc/modprobe.d/usblp-blacklist with the following content:
blacklist usblp Best wishes, Andrey Paramonov -- To UNSUBSCRIBE, email to debian-bugs-dist-requ...@lists.debian.org with a subject of "unsubscribe". Trouble? Contact listmas...@lists.debian.org