** Description changed: - As of a couple of days ago, I am unable to get network manager to - connect to any wifi network. + If the /etc/NetworkManager/system-connections directory is a cross- + filesystem symlink, activating connections will fail with the unrelated + messages: - It looks like the groovy network manager packages have not received any - updates since release, but since I can successfully use wpasupplicant - directly I'm ruling out issues with my specific home wifi or wifi card. + * "failed to create file ...: Read-only file system" (TRACE level) - Though this might still ultimately be due to my specific setup, the - error message logged by network manager is really insufficient for - determining where the failure may lie, even when debug mode is turned - on[0]. The Gnome UI doesn't display an error at all. + * "failure adding connection: settings plugin does not support adding + connections" (DEBUG level and above) + + * no error message (Gnome UI) + + I suspect moving the systems-connections directory onto a separate + filesystem is not supported because network manager tries to atomically + move a connection temp file into place and fails, but this is really + hard to figure out since the error messages are completely unrelated. + Versions: Ubuntu 20.10 network-manager 1.26.2-1ubuntu1 network-manager-gnome 1.18.0-1ubuntu2 + How to reproduce: + sudo mv /etc/NetworkManager/system-connections /some/other/mountpoint/system-connections + sudo ln -s /some/other/mountpoint/system-connections /etc/NetworkManager/system-connections + + Then: * select any wifi network via the Gnome UI, or * connect to a wifi network via nmcli, or * connect to a wifi network via nmtui + Symptoms: - * no UI popup is produced when using the Gnome UI - * the message "failure adding connection: settings plugin does not support adding connections" is shown when using nmcli or nmtui - * debug logs include slightly more information: + * "failed to create file ...: Read-only file system" (TRACE level, + journalctl) - Jan 31 20:32:57 laptop NetworkManager[3315]: <debug> [1612143177.8651] active-connection[0x55b6b9a25b50]: set device "wlp61s0" [0x55b6b9b62cb0] - Jan 31 20:32:57 laptop NetworkManager[3315]: <debug> [1612143177.8652] device[fd0e531202f8924b] (wlp61s0): add_pending_action (1): 'activation-22' - Jan 31 20:32:57 laptop NetworkManager[3315]: <debug> [1612143177.8653] active-connection[0x55b6b9a25b50]: constructed (NMActRequest, version-id 22, type managed) - Jan 31 20:32:57 laptop NetworkManager[3315]: <debug> [1612143177.8807] active-connection[0x55b6b9a25b50]: Failed to activate '(null)': failure adding connection: settings plugin does not support adding connections - Jan 31 20:32:57 laptop NetworkManager[3315]: <debug> [1612143177.8808] active-connection[0x55b6b9a25b50]: set state deactivated (was unknown) - Jan 31 20:32:57 laptop NetworkManager[3315]: <debug> [1612143177.8808] active-connection[0x55b6b9a25b50]: check-master-ready: not signalling (state deactivated, no master) - Jan 31 20:32:57 laptop NetworkManager[3315]: <debug> [1612143177.8808] device[fd0e531202f8924b] (wlp61s0): remove_pending_action (0): 'activation-22' - Jan 31 20:32:57 laptop NetworkManager[3315]: <info> [1612143177.8811] audit: op="connection-add-activate" pid=452187 uid=1000 result="fail" reason="failure adding connection: settings plugin does not support adding connections" - Jan 31 20:32:57 laptop NetworkManager[3315]: <debug> [1612143177.8812] active-connection[0x55b6b9a25b50]: disposing + * "failure adding connection: settings plugin does not support adding + connections" (DEBUG level and above, journalctl and nmtui/nmcli output) - Workaround: - - * connect to networks by using wpasupplicant directly[1] + * no error message (Gnome UI) - [0] https://wiki.gnome.org/Projects/NetworkManager/Debugging - [1] https://shapeshed.com/linux-wifi/ + Relevant sample logs: + + Feb 01 20:56:04 laptop NetworkManager[1368510]: <trace> [1612230964.4038] active-connection[0x56274f6f0a60]: creating + Feb 01 20:56:04 laptop NetworkManager[1368510]: <debug> [1612230964.4039] active-connection[0x56274f6f0a60]: set device "wlp61s0" [0x56274f883f00] + Feb 01 20:56:04 laptop NetworkManager[1368510]: <debug> [1612230964.4039] device[d62304f9da70d783] (wlp61s0): add_pending_action (1): 'activation-5' + Feb 01 20:56:04 laptop NetworkManager[1368510]: <debug> [1612230964.4040] active-connection[0x56274f6f0a60]: constructed (NMActRequest, version-id 5, type managed) + Feb 01 20:56:04 laptop NetworkManager[1368510]: <trace> [1612230964.4040] auth: call[37]: CheckAuthorization(org.freedesktop.NetworkManager.network-control), subject=unix-process[pid=1369566, uid=0, start=18908113] (succeeding for root) + Feb 01 20:56:04 laptop NetworkManager[1368510]: <trace> [1612230964.4041] auth: call[37]: completed: authorized=1, challenge=0 (simulated) + Feb 01 20:56:04 laptop NetworkManager[1368510]: <trace> [1612230964.4041] auth: call[38]: CheckAuthorization(org.freedesktop.NetworkManager.settings.modify.system), subject=unix-process[pid=1369566, uid=0, start=18908113] (succeeding for root) + Feb 01 20:56:04 laptop NetworkManager[1368510]: <trace> [1612230964.4042] auth: call[38]: completed: authorized=1, challenge=0 (simulated) + Feb 01 20:56:04 laptop NetworkManager[1368510]: <trace> [1612230964.4042] settings: add-connection: failed to add a4e6f563-eb2a-41ff-bc23-986ee3438ed9/'mywifi_2G': settings plugin does not support adding connections + Feb 01 20:56:04 laptop NetworkManager[1368510]: <trace> [1612230964.4061] keyfile: commit: a4e6f563-eb2a-41ff-bc23-986ee3438ed9 (mywifi_2G) failed to add: error writing to file '/etc/NetworkManager/system-connections/mywifi_2G.nmconnection': failed to create file /etc/NetworkManager/system-connections/mywifi_2G.nmconnection.ZE5DY0: Read-only file system + Feb 01 20:56:04 laptop NetworkManager[1368510]: <trace> [1612230964.4062] settings: add-connection: failed to add a4e6f563-eb2a-41ff-bc23-986ee3438ed9/'mywifi_2G': error writing to file '/etc/NetworkManager/system-connections/mywifi_2G.nmconnection': failed to create file /etc/NetworkManager/system-connections/mywifi_2G.nmconnection.ZE5DY0: Read-only file system + Feb 01 20:56:04 laptop NetworkManager[1368510]: <debug> [1612230964.4062] active-connection[0x56274f6f0a60]: Failed to activate '(null)': failure adding connection: settings plugin does not support adding connections + Feb 01 20:56:04 laptop NetworkManager[1368510]: <debug> [1612230964.4062] active-connection[0x56274f6f0a60]: set state deactivated (was unknown) + Feb 01 20:56:04 laptop NetworkManager[1368510]: <debug> [1612230964.4063] active-connection[0x56274f6f0a60]: check-master-ready: not signalling (state deactivated, no master) + Feb 01 20:56:04 laptop NetworkManager[1368510]: <debug> [1612230964.4063] device[d62304f9da70d783] (wlp61s0): remove_pending_action (0): 'activation-5' + Feb 01 20:56:04 laptop NetworkManager[1368510]: <debug> [1612230964.4066] audit: socket created + Feb 01 20:56:04 laptop NetworkManager[1368510]: <debug> [1612230964.4067] create NMAuditManager singleton (a031d34f795a73ab) + Feb 01 20:56:04 laptop NetworkManager[1368510]: <info> [1612230964.4069] audit: op="connection-add-activate" pid=1369566 uid=0 result="fail" reason="failure adding connection: settings plugin does not support adding connections" + Feb 01 20:56:04 laptop NetworkManager[1368510]: <debug> [1612230964.4069] active-connection[0x56274f6f0a60]: disposing
-- 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
