

Few things:
- If you use the same USB port for this all the time, disable power saving on that port
- Make sure this isn’t a PD port (this is a laptop design annoyance)
- Make sure your monitor’s own power saving settings aren’t the issue by disabling things like “deep sleep” or similar
Another thing to try is download Fedora LiveUSB and test it with that (it will be Wayland). If it works, then you know it’s a config issue with your distro.
Any one of these could be the issue, but if you don’t want to take steps to debug it, then just unplugging and replugging the cable will kick the monitor back up.