Duplicate of this question here...
Add Fake Display when No Monitor is Plugged In
But I had major complications this Q and A never addressed
After I implemented the top rated answer by following all the steps of installing the dummy driver and creating the xorg.conf file I could no longer get ANY display from my ubuntu PC. Not remotely and not from a monitor. The factor that screwed the pooch in this case may have been my 1080 ti Nvidia graphics card?
The "display" now is just a black screen over the monitor and nothing I can do, that worked before I installed the driver, can get remote access to the PC from the iMac.
I'm already in the process of wiping the HD and re-installing ubuntu. What went wrong? How else could I have resolved this and is there a way to solve the original problem?