Found a solution on German forum: https://forum.ubuntuusers.de/topic/h...oblem-unter/4/
Apparently ippusbxd causes problems and can simply be removed to make the printer work again. I used: sudo apt purge ippusbxd -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1876704 Title: 20.04 usb printing problem HP Envy 5640 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/cups/+bug/1876704/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
