I bought a Rock Pi 4A (rev. 1.4) with all accesories back in december. It arrived just before new year, I loaded up an image: It booted fine, then I’ve put it in a box for later.
We are now later. I’ve got an up to date image of Armbian Buster 5.4 loaded and there is no way to have network working.
ethtool eth0 shows everything usual, the (1 G) link being detected and configured properly (LEDs are lit anyway).
DHCP is unable to get an IP address. So I investigated and found out that DHCP does get out of the pi, my router responds then nothing happens. Data can get out but not in.
Exact same behaviour with other flavours of Armbian and the official Ubuntu image. Of course I tried switching cables, even if everything works fine plugged into my computer. I even tried lowering link speed to 100 M (router configuration) and changing PSU.
To me that looks like a faulty BGA. Google gives multiple occurences of bad Ethernet on RP4 but usually it’s completely dead. Is there any known hardware issue ?
(Everything looks absolutely fine software-wise, except it’s not working.)
Thanks for your input.