If there's any bug in Ubuntu here, it's that the release upgrader didn't try harder to get the system into a consistent state before offering a reboot. No bug in pam, which is simply one of the packages to be upgraded.
libpam-modules refused to be upgraded because there were references to obsolete modules in the system config and one or more services would be broken after upgrade. At the per package level there really isn't a better way to handle this. ** Package changed: pam (Ubuntu) => ubuntu-release-upgrader (Ubuntu) -- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to pam in Ubuntu. https://bugs.launchpad.net/bugs/1977493 Title: Upgrade from Ubuntu 21.10 to 22.04 fails - unmet dependencies: libpam- modules Status in Ubuntu on IBM z Systems: Incomplete Status in ubuntu-release-upgrader package in Ubuntu: Incomplete Bug description: ---Problem Description--- Upgrade from Ubuntu 21.10 to 22.4 fails I run do-release-upgrade and I got a message upgrade completed with errors. I rebooted the server and it is now in an undefined state between 21.10 and 22.04. Not all packages have been installed. I attach apt log and output of some commands: root@tuxmaker:~# cat /etc/os-release PRETTY_NAME="Ubuntu 21.10" NAME="Ubuntu" VERSION_ID="21.10" VERSION="21.10 (Impish Indri)" VERSION_CODENAME=impish ID=ubuntu ID_LIKE=debian HOME_URL="https://www.ubuntu.com/"; SUPPORT_URL="https://help.ubuntu.com/"; BUG_REPORT_URL="https://bugs.launchpad.net/ubuntu/"; PRIVACY_POLICY_URL="https://www.ubuntu.com/legal/terms-and-policies/privacy-policy"; UBUNTU_CODENAME=impish root@tuxmaker:~# do-release-upgrade Checking for a new Ubuntu release Please install all available updates for your release before upgrading. root@tuxmaker:~# apt dist-upgrade Reading package lists... Done Building dependency tree... Done Reading state information... Done You might want to run 'apt --fix-broken install' to correct these. The following packages have unmet dependencies: libpam-modules : PreDepends: libpam-modules-bin (= 1.3.1-5ubuntu11) but 1.4.0-11ubuntu2 is installed Recommends: update-motd but it is not installed E: Unmet dependencies. Try 'apt --fix-broken install' with no packages (or specify a solution). root@tuxmaker:~# apt --fix-broken install Reading package lists... Done Building dependency tree... Done Reading state information... Done Correcting dependencies... Done The following additional packages will be installed: libpam-modules The following packages will be upgraded: libpam-modules 1 upgraded, 0 newly installed, 0 to remove and 1208 not upgraded. 4 not fully installed or removed. Need to get 0 B/279 kB of archives. After this operation, 1,024 B disk space will be freed. Do you want to continue? [Y/n] y Preconfiguring packages ... (Reading database ... 401827 files and directories currently installed.) Preparing to unpack .../libpam-modules_1.4.0-11ubuntu2_s390x.deb ... dpkg: error processing archive /var/cache/apt/archives/libpam-modules_1.4.0-11ubuntu2_s390x.deb (--unpack): new libpam-modules:s390x package pre-installation script subprocess returned error exit status 2 Errors were encountered while processing: /var/cache/apt/archives/libpam-modules_1.4.0-11ubuntu2_s390x.deb E: Sub-process /usr/bin/dpkg returned an error code (1) Contact Information = pp...@de.ibm.com ---uname output--- Linux tuxmaker 5.13.0-44-generic #49-Ubuntu SMP Wed May 18 13:30:03 UTC 2022 s390x s390x s390x GNU/Linux Machine Type = z15, 8561-701 ---boot type--- upgade ---Kernel cmdline used to launch install--- do-release-upgrade ---Install repository type--- Internet repository ---Install repository Location--- http://ports.ubuntu.com:80/ ---Point of failure--- Other failure during installation (stage 1) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu-z-systems/+bug/1977493/+subscriptions -- Mailing list: https://launchpad.net/~touch-packages Post to : touch-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~touch-packages More help : https://help.launchpad.net/ListHelp
