Same problem here with 13.4.1
I run 2 external displays and an M2 laptop in clamshell mode hooked up to a dock that relies on DisplayLink software.
When I leave the office, I sleep the machine and power down the monitors. When I return, sometimes both monitors come back up, but mostly either one or both do not come back on and remain black.
If I power cycle the dock, things start working again, but that's not how the DisplayLink driver is supposed to work.
I recorded a log after the problem happened and sent it to DisplayLink. I suggest everyone do the same. Here's the link:
https://support.displaylink.com/know...to-displaylink