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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 now

After 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 now

But still no luck :( Also I tried make file /etc/cloud/cloud.cfg.d/99-disable-network-config.cfg with network: {config: disabled}

TwentySix
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    Edit your question and show me `sudo lshw -C network` and `ls -al /etc/netplan`. Start comments to me with @heynnema or I'll miss them. – heynnema Oct 11 '20 at 20:16

1 Answers1

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[SOLVED] same issue (but with raspberry PI 3 model B)

solution at https://askubuntu.com/a/1143594/385361 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
bcag2
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  • What is the relevant difference between what OP did and what is done in the linked answer? As far as I understand it in both cases `/etc/netplan/50-cloud-init.yaml` is edited (ok and OP basically renamed it but that doesn't seem relevant) to include the `wifis: wlan0: ...` part and they look exactly the same to me. – Marv Nov 06 '22 at 22:11
  • you're right, nothing really relevant, excepted perhaps the syslog information to check ? – bcag2 Nov 15 '22 at 13:19