------- Comment From kowshik.j...@in.ibm.com 2025-03-19 02:03 EDT-------
Thank you enr0n for providing the info and the release notes. per above 
comments I am closing this bug.

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https://bugs.launchpad.net/bugs/2103489

Title:
  "who" command is not listing the users

Status in The Ubuntu-power-systems project:
  New
Status in coreutils package in Ubuntu:
  Confirmed
Status in systemd package in Ubuntu:
  Confirmed

Bug description:
  == Comment: #0 - Kowshik Jois B S <kowshik.j...@in.ibm.com> - 2025-03-17 
09:06:44 ==
  ---Problem Description---
  "who" command is not listing the users.
   
  ---Steps to Reproduce---
  1. Install Ubuntu25.04 on a PowerVM LPAR
  2. Execute "who" command
   
  ---uname output---
  Linux ubhost2504 6.14.0-10-generic #10-Ubuntu SMP Wed Mar 12 16:05:46 UTC 
2025 ppc64le ppc64le ppc64le GNU/Linux

  root@ubhost2504:~# ls /run/utmp
  ls: cannot access '/run/utmp': No such file or directory

  
  Additional details:

  root@ubhost2504:~# systemctl restart systemd-logind.service 
  root@ubhost2504:~# sleep 5
  root@ubhost2504:~# ls /run/utmp
  ls: cannot access '/run/utmp': No such file or directory
  root@ubhost2504:~#

  root@ubhost2504:~# apt list --installed | grep -E 
"coreutils|procps|util-linux|sysvinit"
  WARNING: apt does not have a stable CLI interface. Use with caution in 
scripts.

  coreutils/plucky,now 9.5-1ubuntu1 ppc64el [installed,automatic]
  procps/plucky,now 2:4.0.4-4ubuntu5 ppc64el [installed,automatic]
  sysvinit-utils/plucky,now 3.14-1ubuntu1 ppc64el [installed,automatic]
  util-linux/plucky,now 2.40.2-14ubuntu1 ppc64el [installed]
  root@ubhost2504:~

  root@ubhost2504:~# apt list --installed | grep -E "util-
  linux|systemd|login"

  WARNING: apt does not have a stable CLI interface. Use with caution in
  scripts.

  libnss-systemd/now 257.2-3ubuntu1 ppc64el [installed,upgradable to: 
257.3-1ubuntu3]
  libpam-systemd/now 257.2-3ubuntu1 ppc64el [installed,upgradable to: 
257.3-1ubuntu3]
  libsystemd-shared/now 257.2-3ubuntu1 ppc64el [installed,upgradable to: 
257.3-1ubuntu3]
  libsystemd0/now 257.2-3ubuntu1 ppc64el [installed,upgradable to: 
257.3-1ubuntu3]
  login.defs/plucky,now 1:4.16.0-7ubuntu1 all [installed,automatic]
  login/plucky,now 1:4.16.0-2+really2.40.2-14ubuntu1 ppc64el 
[installed,automatic]
  python3-systemd/now 235-1build5 ppc64el [installed,upgradable to: 235-1build6]
  systemd-cryptsetup/now 257.2-3ubuntu1 ppc64el [installed,upgradable to: 
257.3-1ubuntu3]
  systemd-hwe-hwdb/plucky,now 256.4.1 all [installed,automatic]
  systemd-resolved/now 257.2-3ubuntu1 ppc64el [installed,upgradable to: 
257.3-1ubuntu3]
  systemd-sysv/now 257.2-3ubuntu1 ppc64el [installed,upgradable to: 
257.3-1ubuntu3]
  systemd-timesyncd/now 257.2-3ubuntu1 ppc64el [installed,upgradable to: 
257.3-1ubuntu3]
  systemd/now 257.2-3ubuntu1 ppc64el [installed,upgradable to: 257.3-1ubuntu3]
  util-linux/plucky,now 2.40.2-14ubuntu1 ppc64el [installed]
  root@ubhost2504:~#

  root@ubhost2504:~# whoami
  root
  root@ubhost2504:~# tty
  /dev/hvc0
  root@ubhost2504:~#

  
  Contact Information = kowshik.j...@in.ibm.com 
   
  Machine Type = P10 Rainier 
   
  ---Debugger---
  A debugger is not configured

   
  Userspace tool common name: systemd 
   
  The userspace tool has the following bit modes: 64-bit


  The file /run/utmp is missing.

  Create the file by running:

  # touch /run/utmp
  Adjust the ownership and permissions:

  # chown root:utmp /run/utmp; chmod g+w /run/utmp
  Log out from the system and log back in.

  root@ubhost2504:~# who
  root     pts/0        2025-03-18 06:03 (10.231.203.30)

  
  Correct. That file is missing and it should get auto generated upon reboot. 
But in this case it is not happening. 

  Manual creation of the file will solve the issue temporarily but once
  the machine gets rebooted, the existing file will gets deleted(this is
  expected) and after reboot the file will be missing again(this is a
  bug. regeneration of that file should happen automatically after
  reboot but is not happening)

  
  We are not seeing /var/run/utmp .. installed systemd/plucky,now 
257.3-1ubuntu3 ppc64el [installed,automatic]

  but these file is missing.

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