So the Ethernet port on my Raspberry Pi 4 isn't working. No lights coming on, not even a flicker during boot.The power lights come on, and it boots fine, but no Ethernet. ifconfig gives me this:
eth0: flags=4099<UP,BROADCAST,MULTICAST> mtu 1500 ether dc:a6:32:9e:d0:be txqueuelen 1000 (Ethernet) RX packets 0 bytes 0 (0.0 B) RX errors 0 dropped 0 overruns 0 frame 0 TX packets 0 bytes 0 (0.0 B) TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
Loopback and wifi work fine.I can switch it out with a different rpi4 using the same power cable and same Ethernet cable and even using the same SD card with same OS and I get lights and connection. I'm trying to build a cluster, so I've been messing with static addresses across multiple routers and switches. But nothing I try gets this Ethernet port to light up until I switch the board out. Any ideas?