I see this behaviour also when /etc is still on the rootfs, but fstab has a "ro" for rootfs.
on Ubuntu 18.04 LTS and 20.04 LTS (arm versions for odroids, but not unlikely generally), I get a # nmcli con add type ethernet ifname eth0 con-name XXXXX "Error: Failed to add 'XXXXX' connection: failure adding connection: settings plugin does not support adding connections" Changing fstab to rw and rebooting removes the error; added or modified connections, including static ip addresses, Wifi connections etc, will persist and work as expected when rebooting later with ro for rootfs in fstab. for me, any fix would ideally enable functionality after a simple # mount -o remount,rw /dev/mmcblk0p2 / instead of having to change fstab and reboot. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1913979 Title: misleading error messages when /etc/NetworkManager/system-connections is a cross-filesystem symlink To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/network-manager/+bug/1913979/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
