I followed the same test, s/focal/jammy/ in /etc/apt/sources.list and apt-get update. I then first installed the new snapd from jammy:
... Preparing to unpack .../6-snapd_2.55.2+22.04_amd64.deb ... Unpacking snapd (2.55.2+22.04) over (2.54.3+20.04.1ubuntu0.2) ... ... Setting up snapd (2.55.2+22.04) ... Installing new version of config file /etc/apparmor.d/usr.lib.snapd.snap-confine.real ... snapd.failure.service is a disabled or a static unit, not starting it. snapd.snap-repair.service is a disabled or a static unit, not starting it. ... I then ran "sudo apt-get dist-upgrade" but I still encountered the same error: Errors were encountered while processing: /tmp/apt-dpkg-install-DY0azb/17-firefox_1%3a1snap1-0ubuntu1_amd64.deb Error: Timeout was reached E: Sub-process /usr/bin/dpkg returned an error code (1) -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1966589 Title: release upgrade fails due to `firefox package pre-installation script subprocess returned error exit status 1` To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/firefox/+bug/1966589/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
