New Installation - gets no IP

Installation
1

Hey there Home Assistant Community

I’m trying my first steps with home assistant but it doesn’t work as desired.

I’m using a RPi 3b and I flashed the recent image using Etcher.

I connected it to my router and nothing happens. LEDs are flashing but that’s it.

So I got suspicious and connected to my monitor.
It seems like everything is running but it’s not getting any IP address from my router.

The router doesn’t even recognize it as a new device.
I have no mac filtering or additional security.

If I type net info eth0 it outputs:
Connected: true
Enabled:true
Interface: eth0
Ipv4:
Adress[]
Gateway: null
Method: disabled
Nameservers: []

Any idea how to fix this?

Thanks a lot!

2

Simple things first, have you tried another network cable?

3

Yes I have.
And another Port on the Router.

I tried setting a static IP using nmcli but still no change.

4

Any solution to this?

I have same problem after a fresh installation.
When I connect cable to my my laptop interface gets an ip address but HA does not.