Trying to install HA on a Raspberry Pi 3. I switched 2 raspberrys, 3 SD cards, 3 ethernet cables (incl one from a connected device) and 2 chargers. And I still have this issue.
It does not see the Ethernet.
I know there are a few posts talking about the same problem. And the fixes usually talked about changing the different components. Which I did.
I’m having this same issue. It boots up and says “No ethernet found.” It then outputs lots of log stuff and then restarts after about 10 seconds. Repeatedly. I used Raspberry Pi Imager to install HA on an SD. The Pi was previously used with OctoPi and worked fine.
And just before I pushed the Reply button, I tried another USB-MicroUSB power cable and it worked!