I am facing certain issues with the NetworkManager service. It fails randomly, and I'm left with no internet connection unless I restart the machine. Restarting the NetworkManager service using either sudo service NetworkManager restart or sudo systemctl restart systemd-networkd used to solve the problem before, but they don't work now. Restarting the machine is the only option left to get back the internet connection.
This happens when I try to restart the NetworkManager service:
$ sudo service NetworkManager restart
Failed to restart NetworkManager.service: Unit NetworkManager.service failed to load properly: Transport endpoint is not connected.
See system logs and 'systemctl status NetworkManager.service' for details.
Checking the systemctl status, I get this:
$ systemctl status NetworkManager.service
● NetworkManager.service - Network Manager
Loaded: error (Reason: Unit NetworkManager.service failed to load properly: Transport endpoint is not connected.)
Active: inactive (dead) since Wed 2021-08-18 09:05:22 IST; 12min ago
Docs: man:NetworkManager(8)
Process: 1186 ExecStart=/usr/sbin/NetworkManager --no-daemon (code=exited, status=0/SUCCESS)
Main PID: 1186 (code=exited, status=0/SUCCESS)
Aug 18 09:04:52 ashish-Inspiron-7570 NetworkManager[1186]: <info> [1629257692.0857] caught SIGTERM, shutting down normally.
Aug 18 09:04:54 ashish-Inspiron-7570 NetworkManager[1186]: <info> [1629257694.1067] device (wlp3s0): state change: activated -> deactivating (reason 'unmanaged', sys-iface-state: 'managed')
Aug 18 09:04:56 ashish-Inspiron-7570 NetworkManager[1186]: <info> [1629257696.5316] device (wlp3s0): state change: deactivating -> unmanaged (reason 'removed', sys-iface-state: 'managed')
Aug 18 09:04:56 ashish-Inspiron-7570 NetworkManager[1186]: <info> [1629257696.5512] dhcp4 (wlp3s0): canceled DHCP transaction
Aug 18 09:04:56 ashish-Inspiron-7570 NetworkManager[1186]: <info> [1629257696.5513] dhcp4 (wlp3s0): state changed bound -> done
Aug 18 09:04:56 ashish-Inspiron-7570 NetworkManager[1186]: <info> [1629257696.7884] manager: NetworkManager state is now CONNECTED_LOCAL
Aug 18 09:04:56 ashish-Inspiron-7570 NetworkManager[1186]: <info> [1629257696.7891] device (p2p-dev-wlp3s0): state change: disconnected -> unmanaged (reason 'removed', sys-iface-state: 'removed')
Aug 18 09:04:56 ashish-Inspiron-7570 NetworkManager[1186]: <info> [1629257696.7922] device (docker_gwbridge): bridge port vethb8a76bb was detached
Aug 18 09:04:56 ashish-Inspiron-7570 NetworkManager[1186]: <info> [1629257696.7922] device (vethb8a76bb): released from master device docker_gwbridge
Aug 18 09:05:22 ashish-Inspiron-7570 systemd[1]: NetworkManager.service: Succeeded.
I have posted the journalctl -xe logs on: https://pastebin.com/vi8f4eSj
Can anyone help me identify what is failing and how to restart the failing component, so as to get back my internet connection without having to reboot my machine.
