I accidentally turned off ethernet connention trying to enable WIFI and Cannot connect

Configuration
1

While trying to communicate with my Raspberry Pi setup from Ethernet to the WIFI, I disabled the ethernet connection . Now I have NO connection.
What do I do now?

I am new to HA, Rasperry Pi , and Zigbee. I have zero Programing abilities and I am struggling. Every step is a challenge. I am slowly learning to get my Zigbee automations functioning properly.
Thanks

2

One option of course would be to plug a usb keyboard and hdmi display into the Pi.

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3

Turn off the Pi. Remove your sd-card and put it in your PC/laptop. Search for /etc/wpa_supplicant/wpa_supplicant.conf and fill in the data you need. Move the card back to the Pi and boot it. It should be available via Wifi after a few seconds.

To connect to the wifi you need to get the ip address from the router after booting up.

How and what to insert into wpa_supplicant.conf please check with Google, there are numerous instructions out there, even on the official raspberry site. :slight_smile:

Good luck!

PS: If everything fails, setup the Raspbian OS completely new, this time with RapsberryPiImager, as you can there set the wifi connection for the first boot up, so the Pi is started with wifi enabled already. :slight_smile:

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4

I think that I am close.I was able to beg borrow and steal the cords, adapters and monitor, and have gotten to the Command line, but need to get to the user interface that i can comprehend,
Any help to get to the next level would be greatly appreciated.
this is what the display shows:

“waiting for the HA CLI to be ready”
HOME ASSISTANT
"Welcome to the Home Assistant comand line.
Waiting for the superviser to startup…
System Information
IPv4 addresses for eth0
ipv4 addresses for wlan0:

  OS Version:           HA OS 8.1
  HA  core                 2022.5.5

 HA URL:                http://homeassistant.local:8123
 Observer URL:    http://homeassistant.local:4357

Thanks for the suggestion, eventually i want the system to run without wifi but the Ethernet cord was tripping my wife… I have since learned that wifi is generally not recommended anyways. I hope to operate mostly offline eventually.
Thanks Again…

5

This should mean that you are now in the ha cli shell, meaning you should have a prompt: ha >

I haven’t done too much with the ha cli, but first try: network info
This should provide a list of things, most importantly, your interfaces and their attributes:

....
interfaces:
- connected: xxx
  enabled: true
  interface: eth0
  ipv4:
    address:
    - 192.168.1.03/24
    gateway: 192.168.1.1
    method: static
    nameservers:
    - 192.168.1.1
.....

In your case, the addresses may be all messed up.

Next, do network update --help
This will show you an example and show you a list of parameters you can update. You’ll want to update most of the parameters above (ipv4 address/subnetmask, method, gateway, nameservers) if they are messed up.
You’ll also need to readjust your wlan0 parameters as well, probably just disable it if you don’t want to use it.

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6

Wmaker:
Thank you so much.
All I needed to do was

ha> network update eth0 – method -auto

One funny thing is that i used to access HA at http://homeassistant:8123
Now http://homeassistant.local:8123 works

I am very happy to be back on my HA path…
Thanks again

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7

Thanks @ottomatt! Exactly what I needed!

For others, I connected keyboard and monitor and rebooted with a power cycle and the ha > command line came up. I’m on Home Assistant OS 11.1 and Core 2023.11.2, and the command line I used was slightly different (so may change between versions?):

network update end0 --ipv4-method auto --ipv6-method auto

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