Discovered the problem: Copying the file /usr/lib/sane/libsane-hpaio.so.1 from the precise 12.04 installation to the quantal 12.10 installation fixes the problem. This file is part of the libsane-hpaio package. If I can figure out how to change the bug report, I will do so.
** Project changed: hplip => sane-backends -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1055903 Title: hplip duplexer problem and scanner does not work To manage notifications about this bug go to: https://bugs.launchpad.net/sane-backends/+bug/1055903/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs