Sorry for the noise, seem that the root of evil is found after reading https://bugs.launchpad.net/ubuntu/+source/network-manager/+bug/553115. The gid for user messagebus from /etc/passwd was different from the gid of group messagebus in /etc/group. Edited manually and everything seems to work like a charm again, except the things I tried to fix be various workarounds in the meantime :(
-- fails to run lib/dbus-1.0/dbus-daemon-launch-helper https://bugs.launchpad.net/bugs/295405 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs