Public bug reported:
root@jan-laptop:/# lsb_release -d
Description: Ubuntu Resolute Raccoon (development branch)
root@jan-laptop:/# dpkg -l unattended-upgrades
Desired=Unknown/Install/Remove/Purge/Hold
| Status=Not/Inst/Conf-files/Unpacked/halF-conf/Half-inst/trig-aWait/Trig-pend
|/ Err?=(none)/Reinst-required (Status,Err: uppercase=bad)
||/ Name Version Architecture Description
+++-===================-============-============-===========================================
ii unattended-upgrades 2.12ubuntu5 all automatic installation of
security upgrades
root@jan-laptop:/# apt list --upgradable|wc -l
WARNING: apt does not have a stable CLI interface. Use with caution in
scripts.
71
root@jan-laptop:/# journalctl --since=today|egrep 'apt-'
Mar 09 06:53:58 jan-laptop systemd[1]: Started apt-daily.timer - Daily apt
download activities.
Mar 09 06:53:58 jan-laptop systemd[1]: Started apt-daily-upgrade.timer - Daily
apt upgrade and clean activities.
Mar 09 07:29:19 jan-laptop systemd[1]: Starting apt-daily-upgrade.service -
Daily apt upgrade and clean activities...
Mar 09 07:29:19 jan-laptop systemd[1]: apt-daily-upgrade.service: Deactivated
successfully.
Mar 09 07:29:19 jan-laptop systemd[1]: Finished apt-daily-upgrade.service -
Daily apt upgrade and clean activities.
root@jan-laptop:/# cat /etc/apt/apt.conf.d/20auto-upgrades
APT::Periodic::Update-Package-Lists "1";
APT::Periodic::Unattended-Upgrade "1";
root@jan-laptop:/# cat /var/log/unattended-upgrades/unattended-upgrades.log
cat: /var/log/unattended-upgrades/unattended-upgrades.log: No such file or
directory (os error 2)
manual dry-run tells you why, but it should have logged it if possible?
root@jan-laptop:/# unattended-upgrade --debug --dry-run
loading plugins from ['/etc/unattended-upgrades/plugins/',
'/usr/share/unattended-upgrades/plugins']
Checking if system is running on battery is skipped. Please install
powermgmt-base package to check power status and skip installing updates when
the system is running on battery.
Not running on this development release before 2026-04-01
** Affects: unattended-upgrades (Ubuntu)
Importance: Undecided
Status: New
** Description changed:
root@jan-laptop:/# lsb_release -d
Description: Ubuntu Resolute Raccoon (development branch)
root@jan-laptop:/# dpkg -l unattended-upgrades
Desired=Unknown/Install/Remove/Purge/Hold
| Status=Not/Inst/Conf-files/Unpacked/halF-conf/Half-inst/trig-aWait/Trig-pend
|/ Err?=(none)/Reinst-required (Status,Err: uppercase=bad)
||/ Name Version Architecture Description
+++-===================-============-============-===========================================
ii unattended-upgrades 2.12ubuntu5 all automatic installation of
security upgrades
- root@jan-laptop:/# apt-cache list --upgradable|wc -l
- E: Command line option --upgradable is not understood in combination with the
other options
- 0
+ root@jan-laptop:/# apt list --upgradable|wc -l
+
+ WARNING: apt does not have a stable CLI interface. Use with caution in
+ scripts.
+
+ 71
root@jan-laptop:/# journalctl --since=today|egrep 'apt-'
Mar 09 06:53:58 jan-laptop systemd[1]: Started apt-daily.timer - Daily apt
download activities.
Mar 09 06:53:58 jan-laptop systemd[1]: Started apt-daily-upgrade.timer -
Daily apt upgrade and clean activities.
Mar 09 07:29:19 jan-laptop systemd[1]: Starting apt-daily-upgrade.service -
Daily apt upgrade and clean activities...
Mar 09 07:29:19 jan-laptop systemd[1]: apt-daily-upgrade.service: Deactivated
successfully.
Mar 09 07:29:19 jan-laptop systemd[1]: Finished apt-daily-upgrade.service -
Daily apt upgrade and clean activities.
root@jan-laptop:/# cat /etc/apt/apt.conf.d/20auto-upgrades
APT::Periodic::Update-Package-Lists "1";
APT::Periodic::Unattended-Upgrade "1";
root@jan-laptop:/# cat /var/log/unattended-upgrades/unattended-upgrades.log
cat: /var/log/unattended-upgrades/unattended-upgrades.log: No such file or
directory (os error 2)
manual dry-run tells you why, but it should have logged it if possible?
root@jan-laptop:/# unattended-upgrade --debug --dry-run
loading plugins from ['/etc/unattended-upgrades/plugins/',
'/usr/share/unattended-upgrades/plugins']
Checking if system is running on battery is skipped. Please install
powermgmt-base package to check power status and skip installing updates when
the system is running on battery.
Not running on this development release before 2026-04-01
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https://bugs.launchpad.net/bugs/2143695
Title:
unattended-upgrades via apt-daily-timer does not log why it does not
run
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