I have the same problem, unattended-upgrades ignores files under /etc/apt/preferences.d/*, but also after restarting the PC. The result is that unattended-upgrades breaks regularly my system :(
To fix this I have to run `apt upgrade` after unattended-upgrades updated programs to problematic versions. As a workaround I blacklisted these programs in unattended-upgrades config: /etc/apt/apt.conf.d/50unattended-upgrades -- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to unattended-upgrades in Ubuntu. https://bugs.launchpad.net/bugs/1734285 Title: unattended-upgrades.service ignores (changes in) /etc/apt/preferences.d/ files Status in unattended-upgrades package in Ubuntu: Confirmed Bug description: unattended-upgrades.service ignores (changes in) /etc/apt/preferences.d/ files that are done after the service has started. For example we 'pin' firefox on to a specific version and if a configuration file is placed after the service is started, the pinning is ignored. In our sitation that results in a newer firefox then we want at this moment. We run Ubuntu on 2000+ workstations and our users often start a workstation and let it run for days/weeks before rebooting and thus restarting the service unattended-upgrades again. I did not test if changes in other apt files are ignored also. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/unattended-upgrades/+bug/1734285/+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
