After much investigation and testing, we believe we have found a permanent solution to the remote desktop black screen problem. The fix involves disabling display-related power saving features on the remote desktop, and it has been applied to all users just now (Dec 4th 2023 at 1:50pm). You can check whether the new setting has been applied in remote desktop by going to Applications > Settings > Power Manager > Display, and see if the “Blank after” setting has been set to ‘Never’.