Unstable external display with M1 MacBook Pro The late 2020 M1 MacBook Pro does not seem to be playing well with the LG UltraWide 38WK95C 38-inch external display directly connected with a USB-C cable. The display blacks out (as if the cable physically disconnects) every hour or so. The issue usually resolves itself within a few seconds but sometimes I have to restart the computer to get it in a good state. The problem occurs with both USD-C ports and does not exist with the late 2016 MacBook Pro.
How can I diagnose and fix this external display issue?
The problem seems to have gone away after updating macOS Big Sur from 11.0.1 to 11.1.