Summary
=======
Problem found when focal-preinstalled-server-armhf 20200423.1 image on RPI4
netplan.io version 0.99-0ubuntu2
When testing wifi, I confirmed it worked and was able to connect to the device with ethernet unplugged. After doing this, I removed the netplan config for wifi and ran netplan apply.
ubuntu@ubuntu:~$ sudo rm /etc/netplan/wifi.yaml
ubuntu@ubuntu:~$ sudo netplan apply
Warning: The unit file, source configuration file or drop-ins of netplan-wpa-wlan0.service ch
anged on disk. Run 'systemctl daemon-reload' to reload units.
Warning: The unit file, source configuration file or drop-ins of netplan-wpa-wlan0.service ch
anged on disk. Run 'systemctl daemon-reload' to reload units.
So I did the daemon-reload and tried again:
ubuntu@ubuntu:~$ sudo systemctl daemon-reload
ubuntu@ubuntu:~$ sudo netplan apply
Failed to start netplan-wpa-wlan0.service: Unit netplan-wpa-wlan0.service not found.
Traceback (most recent call last):
File "/usr/sbin/netplan", line 23, in <module>
netplan.main()
File "/usr/share/netplan/netplan/cli/core.py", line 50, in main
self.run_command()
File "/usr/share/netplan/netplan/cli/utils.py", line 179, in run_command
self.func()
File "/usr/share/netplan/netplan/cli/commands/apply.py", line 46, in run
self.run_command()
File "/usr/share/netplan/netplan/cli/utils.py", line 179, in run_command
self.func()
File "/usr/share/netplan/netplan/cli/commands/apply.py", line 173, in command_apply
utils.systemctl_networkd('start', sync=sync, extra_services=netplan_wpa)
File "/usr/share/netplan/netplan/cli/utils.py", line 86, in systemctl_networkd
subprocess.check_call(command)
File "/usr/lib/python3.8/subprocess.py", line 364, in check_call
raise CalledProcessError(retcode, cmd)
subprocess.CalledProcessError: Command '['systemctl', 'start', '--no-block', 'systemd-networkd.service', 'netplan-wpa-wlan0.service']' returned non-zero exit status 5.
At no point did ethernet start working, until I rebooted. systemctl showed that netplan-wpa-wlan0.service still existed, but was dead. After a reboot, that service was gone though, and ethernet worked fine.
Steps to reproduce
==================
1. configure wifi on rpi via netplan
2. remove the wifi config after confirming it works
3. run netplan apply
(optional)
4. run sudo systemctl daemon-reload
5. run netplan apply again
This bug has been reported on the Ubuntu ISO testing tracker.
A list of all reports related to this bug can be found here:
http://