I experienced this 10. april and made a bugreport about login, #1872104. I lost my adm privileges and "was put" to a custom group, att screenshot
** Attachment added: "custom group" https://bugs.launchpad.net/ubuntu/+source/policykit-desktop-privileges/+bug/1240336/+attachment/5351888/+files/Screenshot%20from%202020-04-11%2014-53-05.png -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to policykit-desktop-privileges in Ubuntu. https://bugs.launchpad.net/bugs/1240336 Title: After release upgrade, the user loses permissions for several basic actions in the system Status in gdm package in Ubuntu: Triaged Status in lightdm package in Ubuntu: Triaged Status in lxdm package in Ubuntu: Triaged Status in policykit-desktop-privileges package in Ubuntu: Triaged Bug description: HOW TO REPRODUCE: - Upgrade Ubuntu to the next release. RESULT: - The user looses permissions for several basic actions in the system. ProblemType: Bug DistroRelease: Ubuntu 13.10 Package: policykit-desktop-privileges 0.16 ProcVersionSignature: Ubuntu 3.11.0-12.19-generic 3.11.3 Uname: Linux 3.11.0-12-generic x86_64 ApportVersion: 2.12.5-0ubuntu2 Architecture: amd64 Date: Tue Oct 15 20:20:55 2013 InstallationDate: Installed on 2013-10-09 (7 days ago) InstallationMedia: Ubuntu 13.10 "Saucy Salamander" - Beta amd64 (20131008) MarkForUpload: True PackageArchitecture: all ProcEnviron: LANGUAGE=en_US TERM=xterm PATH=(custom, no user) LANG=en_US.UTF-8 SHELL=/bin/bash SourcePackage: policykit-desktop-privileges UpgradeStatus: No upgrade log present (probably fresh install) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gdm/+bug/1240336/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : desktop-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp