Ubuntu Server 20.04 - How to connect Wi-Fi on Raspberry Pi 3 Model A+
By Emma Valentine •
Can't get the Wi-Fi work on Ubuntu Server 20.04.1, installed to Raspberry Pi 3 Model A+. All ways that I use before and googled now, not work.
First, I tried method that worked in 18.04 and 19.10:
sudo su
rm /etc/netplan/50-cloud-init.yaml
cp /usr/share/doc/netplan/examples/wireless.yaml /etc/netplan/wireless.yaml
nano /etc/netplan/wireless.yaml
network version: 2 renderer: networkd wifis: wlan0: dhcp4: yes access-points: "MY_WF": password: "12345678"
netplan apply
shutdown -r nowAfter that I googled and find this:
network ethernets: eth0: dhcp4: true optional: true version: 2 wifis: wlan0: optional: true access-points: "MY_WF": password: "12345678" dhcp4: true
netplan apply
shutdown -r nowBut still no luck :( Also I tried make file /etc/cloud/cloud.cfg.d/99-disable-network-config.cfg with network: {config: disabled}
11 Answer
[SOLVED] same issue (but with raspberry PI 3 model B)
solution at works for me… (with my right wifi password). Finally, I just add lines in /etc/netplan/50-cloud-init.yaml and reboot.
If it doesn't works, think to have a look to your /var/log/syslog and search netplan or/and wlan0 words, in my case with bad password, I had :
wlan0: CTRL-EVENT-SSID-TEMP-DISABLED id=0 ssid="my_ssid_box" auth_failures=1 
