I tested this using update-manager version 1:18.04.11.11 from bionic- proposed and I immediately received the message about no more upgrades being available for the system. See the attached screenshot for proof!
** Attachment added: "bug-1845690-verification.png" https://bugs.launchpad.net/ubuntu/+source/update-manager/+bug/1845690/+attachment/5354097/+files/bug-1845690-verification.png ** Tags removed: verification-needed verification-needed-bionic ** Tags added: verification-done verification-done-bionic -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1845690 Title: Do not offer an upgrade from i386 systems To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/update-manager/+bug/1845690/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs