[Bug 2075968] Re: cloud-init locks out user `ubuntu` after upgrade from 22.04 to 24.04

Thu Aug 8 22:25:53 UTC 2024

** Also affects: ubuntu-release-upgrader (Ubuntu)
   Importance: Undecided
       Status: New

** Changed in: ubuntu-release-upgrader (Ubuntu Noble)
   Importance: Undecided => High

** Changed in: ubuntu-release-upgrader (Ubuntu)
   Importance: Undecided => Medium

** Changed in: ubuntu-release-upgrader (Ubuntu)
   Importance: Medium => High

** Changed in: ubuntu-release-upgrader (Ubuntu Noble)
     Assignee: (unassigned) => Nick Rosbrook (enr0n)

** Changed in: ubuntu-release-upgrader (Ubuntu Noble)
       Status: New => Triaged

** Changed in: ubuntu-release-upgrader (Ubuntu)
       Status: New => Triaged

** Changed in: ubuntu-release-upgrader (Ubuntu)
     Assignee: (unassigned) => Nick Rosbrook (enr0n)

** Changed in: ubuntu-release-upgrader (Ubuntu Noble)
    Milestone: None => ubuntu-24.04.1

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https://bugs.launchpad.net/bugs/2075968

Title:
  cloud-init locks out user `ubuntu` after upgrade from 22.04 to 24.04

Status in cloud-init package in Ubuntu:
  New
Status in ubuntu-release-upgrader package in Ubuntu:
  Triaged
Status in cloud-init source package in Noble:
  New
Status in ubuntu-release-upgrader source package in Noble:
  Triaged

Bug description:
  After performing an upgrade, and then rebooting, I am no longer able
  to login with my user "ubuntu". I get an authentication failure with
  both the graphical login screen, and when attempting to login on a
  non-graphical tty.

  Dropping to a rescue shell, I can see this in the logs:

  root at xubuntu:~# journalctl -b --grep pam
  Aug 02 11:52:45 xubuntu systemd[1]: systemd 255.4-1ubuntu8.2 running in system mode (+PAM +AUDIT +SELINUX +APPARMOR +IMA +SMACK +SECCOMP +GCRYPT -GNUTLS +OP>
  Aug 02 11:53:00 xubuntu lightdm[1422]: pam_unix(lightdm-greeter:session): session opened for user lightdm(uid=115) by (uid=0)
  Aug 02 11:53:00 xubuntu (systemd)[1472]: pam_unix(systemd-user:session): session opened for user lightdm(uid=115) by lightdm(uid=0)
  Aug 02 11:53:00 xubuntu lightdm[1422]: gkr-pam: couldn't unlock the login keyring.
  Aug 02 11:53:01 xubuntu lightdm[1584]: pam_succeed_if(lightdm:auth): requirement "user ingroup nopasswdlogin" not met by user "ubuntu"
  Aug 02 11:53:40 xubuntu lightdm[1584]: pam_unix(lightdm:auth): authentication failure; logname= uid=0 euid=0 tty=:0 ruser= rhost=  user=ubuntu
  Aug 02 11:53:42 xubuntu lightdm[1604]: pam_succeed_if(lightdm:auth): requirement "user ingroup nopasswdlogin" not met by user "ubuntu"
  Aug 02 11:53:49 xubuntu lightdm[1604]: pam_unix(lightdm:auth): authentication failure; logname= uid=0 euid=0 tty=:0 ruser= rhost=  user=ubuntu
  Aug 02 11:53:51 xubuntu lightdm[1605]: pam_succeed_if(lightdm:auth): requirement "user ingroup nopasswdlogin" not met by user "ubuntu"
  Aug 02 11:53:58 xubuntu lightdm[1607]: pam_succeed_if(lightdm:auth): requirement "user ingroup nopasswdlogin" not met by user "root"
  Aug 02 11:53:59 xubuntu lightdm[1607]: gkr-pam: unable to locate daemon control file
  Aug 02 11:53:59 xubuntu lightdm[1607]: gkr-pam: stashed password to try later in open session
  Aug 02 11:53:59 xubuntu lightdm[1422]: pam_unix(lightdm-greeter:session): session closed for user lightdm
  Aug 02 11:53:59 xubuntu lightdm[1607]: pam_unix(lightdm:session): session opened for user root(uid=0) by (uid=0)
  Aug 02 11:54:00 xubuntu (systemd)[1614]: pam_unix(systemd-user:session): session opened for user root(uid=0) by root(uid=0)
  Aug 02 11:54:00 xubuntu lightdm[1607]: gkr-pam: unlocked login keyring
  Aug 02 11:54:10 xubuntu (sd-pam)[1473]: pam_unix(systemd-user:session): session closed for user lightdm
  Aug 02 11:55:01 xubuntu CRON[2417]: pam_unix(cron:session): session opened for user root(uid=0) by root(uid=0)
  Aug 02 11:55:01 xubuntu CRON[2417]: pam_unix(cron:session): session closed for user root

  Other notes:

  (1) During the upgrade, the screen saver was disabled. I know this has been a bug in the past, but I do not believe it is the cause here.
  (2) A work around for this is to drop into a rescue shell, and from root, run e.g. `passwd ubuntu` to reset the user's password.

  ProblemType: Bug
  DistroRelease: Ubuntu 24.04
  Package: libpam-modules 1.5.3-5ubuntu5.1
  ProcVersionSignature: Ubuntu 6.8.0-39.39-generic 6.8.8
  Uname: Linux 6.8.0-39-generic x86_64
  ApportVersion: 2.28.1-0ubuntu3
  Architecture: amd64
  CasperMD5CheckResult: pass
  CloudArchitecture: x86_64
  CloudID: none
  CloudName: none
  CloudPlatform: none
  CloudSubPlatform: config
  CurrentDesktop: XFCE
  Date: Fri Aug  2 11:55:51 2024
  InstallationDate: Installed on 2024-07-30 (3 days ago)
  InstallationMedia: Xubuntu 22.04.4 LTS "Jammy Jellyfish" - Release amd64 (20240216.1)
  ProcEnviron:
   LANG=en_US.UTF-8
   PATH=(custom, no user)
   SHELL=/bin/bash
   TERM=xterm-256color
   XDG_RUNTIME_DIR=<set>
  SourcePackage: pam
  UpgradeStatus: Upgraded to noble on 2024-08-02 (0 days ago)
  mtime.conffile..etc.init.d.apport: 2024-04-23T07:30:10

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