No planes on local IP. No MLAT. Green light is flashing and must be seeing planes. Restarted several times, rebooted from flightaware server. Restarted dump 1090 with sudo systemctl restart dump1090-fa. What else am I missing? I even reloaded the pi flash card with a new image.
If you have reflashed the image, and are still seeing no aircraft locally, that points to a problem with the dongle.
Are you seeing anything in the log that indicates a problem?
Do sudo journalctl -u dump1090-fa --no-pager and see if you have any error messages showing the dongle isn’t starting properly.
For testing the dongle, please post the output of this script
sudo bash -c "$(wget -q -O - https://raw.githubusercontent.com/wiedehopf/adsb-wiki/master/rtl_test.sh)"