I’m using the onboard interface in a Roland RD-88 stage piano to lighten my rig (was using a MOTU 828es). When the system sits idle for an extended period (say 16 hours), GP shows the red overlay screen warning that the interface has been disconnected, although it still plays the rackspace that was last loaded including responding to MIDI from both keyboards… Unplugging and replugging has no effect, and the only way to recover is to restart GP.
With the MOTU, it would generally recover if the interface was reconnected.
Dell Precision 5530, 32 GB RAM
ASIO mode using latest driver from Roland
Did you make sure that the Power Management in all USB Hubs located in the Device Manager have been unchecked for saving power? In my experience, simply unplugging and replugging will not re-activate the hardware unless you plug it into a different USB port.