I have my Octoprint working via wifi but would like to use a wired Ethernet connection instead. So I opened the octopi-wpa-supplicant.txt file (using nano) and returned the "network=..." and "country=..." to comments, then powered down and restarted my RPI. For the first time ever the activity lights on the RPI lit up! But only for a few seconds, then went dark about half-way through the boot sequence. Unfortunately, the output from the boot scrolls so fast that I couldn't spot any errors or warnings, if there were any.
Ultimately my Octoprint got no IP address. Everything I've read says to turn off wifi, reboot, and Ethernet should "just work", so what EXACTLY am I missing?
How does one remove a previously working wifi config AND get Ethernet working?