I am beginning to suspect this is an systemd-logind issue. I've been thinking it's logind but just checked the upgrade packages to/from versions and cross-checked against the changelogs.
? systemd:amd64 (237-3ubuntu10, 237-3ubuntu10.3), And we have a major change to logind included in that: systemd (237-3ubuntu10.2) bionic; urgency=medium * logind: backport v238/v239 fixes for handling DRM devices. These changes introduce all the fixes that correct handling of open fd's related to the DRM devices, as used by for example NVIDIA GPUs. This backport includes some refactoring, corrections, and comment updates. This to insure that correct history is preserved, code comments match reality, and to ease backporting logind fixes in the future SRUs. (LP: #1777099) -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1784964 Title: Regression due to CVE-2018-1116 (processes not inheriting user's groups ) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/policykit-1/+bug/1784964/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs