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== 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.
** Affects: systemd (Ubuntu)
Importance: Undecided
Assignee: Ubuntu on IBM Power Systems Bug Triage (ubuntu-power-triage)
Status: New
** Tags: architecture-ppc64le bugnameltc-212187 severity-low
targetmilestone-inin---
--
"who" command is not listing the users
https://bugs.launchpad.net/bugs/2103489
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