Hm, I manually enabled multiarch using: echo foreign-architecture i386 | sudo tee /etc/dpkg/dpkg.cfg.d/multiarch as per the instructions in [1], but update-manager is still failing.
s/natty/oneiric/ in /etc/apt/sources.list and running apt-get update && apt-get dist-upgrade (with multiarch enabled) brings up the same issue: $ sudo apt-get dist-upgrade Reading package lists... Done Building dependency tree Reading state information... Done Calculating upgrade... Failed The following packages have unmet dependencies: ia32-libs : Recommends: ia32-libs-multiarch Breaks: nspluginwrapper (< 1.4.4-0ubuntu2) but 1.2.2-0ubuntu9 is to be installed E: Error, pkgProblemResolver::Resolve generated breaks, this may be caused by held packages. [1] https://lists.ubuntu.com/archives/ubuntu-devel- announce/2011-August/000886.html -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/873883 Title: Natty->Oneiric Upgrade failed: An unresolvable problem occurred while calculating the upgrade To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/ia32-libs/+bug/873883/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs