So I think my question needs a bit more explanation:
I have an Ubuntu PC and an Android Phone. I don't have a Micro USB to HDMI cable. My goal is to connect my Android Phone to my Beamer. So my idea was to connect my phone to my PC via USB but the PC then should emulate a sort of Display which I can drag around in a window.
And I "need" this kind of setup because I installed MaruOS on my phone which does Magic if you connect an HDMI Monitor to the phone.