Após acordar meu computador da rede suspensa, ele é desativado e não liga. Se eu tentar executar "sudo systemctl restart network-manager.service" ou similar no terminal que o comando nunca completará, eu apenas fico preso com um terminal que não posso executar mais comandos. E nenhum outro comando sudo será completado, apenas preso depois de bater entrar.
andrew@andrew-Flex-3-1570:~$ systemctl status NetworkManager.service
● NetworkManager.service - Network Manager
Loaded: loaded (/lib/systemd/system/NetworkManager.service; enabled; vendor preset: enabled)
Active: inactive (dead) (Result: exit-code) since Mon 2017-10-23 12:46:55 PDT; 27min ago
Docs: man:NetworkManager(8)
Process: 31992 ExecStart=/usr/sbin/NetworkManager --no-daemon (code=exited, status=1/FAILURE)
Main PID: 31992 (code=exited, status=1/FAILURE)
CGroup: /system.slice/NetworkManager.service
├─5381 /usr/sbin/NetworkManager --no-daemon
└─6144 /usr/sbin/dnsmasq --no-resolv --keep-in-foreground --no-hosts --bind-interfaces --pid-file=/var/run/NetworkMa
Oct 23 12:46:55 andrew-Flex-3-1570 systemd[1]: Failed to start Network Manager.
Oct 23 12:46:55 andrew-Flex-3-1570 systemd[1]: NetworkManager.service: Unit entered failed state.
Oct 23 12:46:55 andrew-Flex-3-1570 systemd[1]: NetworkManager.service: Failed with result 'exit-code'.
Oct 23 12:46:55 andrew-Flex-3-1570 systemd[1]: NetworkManager.service: Service hold-off time over, scheduling restart.
Oct 23 12:46:55 andrew-Flex-3-1570 systemd[1]: Stopped Network Manager.
Oct 23 12:46:55 andrew-Flex-3-1570 systemd[1]: NetworkManager.service: Start request repeated too quickly.
Oct 23 12:46:55 andrew-Flex-3-1570 systemd[1]: Failed to start Network Manager.
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A única maneira de resolver isso é reiniciar (às vezes forçado) meu computador. Estou executando o Ubuntu 16.04.3 LTS em um Lenovo Flex 3-1570.