I've come across this document — although it only mentions issues on
power-up.
https://www.mail-archive.com/search?l=beagleboard@googlegroups.com&q=subject:%22%5C%5Bbeagleboard%5C%5D+Re%5C%3A+Beaglebone+Black+Ethernet+Phy+Not+Detected+on+Boot.%22&o=newest&f=1
On Tue, Mar 2, 2021 at 1:39 PM Beh
hi , i use Beagle Bone Black , and I use it as a local server ,But On
inappropriate time periods (3 weeks or 2 month or ..) , Ethernet is
disabled and when i unplug the LAN cable both lights (green and orange) be
SOLID On and it's not works .The software restart , does not solve this
problem