Have an exit button on the "displaylink manager software".
No need to explain more, its a basic and simple requirement. I want to exit the application when i am not using it. "DisplayLink manager" application is now like some malware which does not allow you to close it.
Windows graphics subsystem cannot just be shut down like that. That’s the reason why you often have to reboot to install some Windows Updates. This has been addressed in Windows 10 Anniversary Update onwards though, where you can just remove the utility from startup or simply not install it. Marking completed.