im not super certain its hardware related but it isnt cable related, (tried 4 diffrent ones)
tried a "Why the heck not" moment in trying to make a "Unique" HDMI Display work, (Xubuntu 16.04.3 - Mac Mini Unibody) which i had to define a new screenmode (800x480 as this things ment for use w/ a raspberryPi 3) i left what i needed in my ~/.xprofile to make sure this stays upon reboot (using this guide here: https://askubuntu.com/questions/377937/how-to-set-a-custom-resolution) and sure it works..... but it also doesnt or atleast seems this way. to have a usable screen while i did this as i techincally didnt have a spare, i did it over the display comming from an connected Elgato HD, (was bothersome w/ a 4 second delay)and its fine even at this resolution .... if its being piped thru the Elgato, i fi shut it down and Reboot w/ the screen directly connected.. Nothin and i get nada unless i switch back AND Reboot. now using a Pi in this case i know the solution is setting a HDMI Signal boost, (which im not sure moden PCs or even vintage systems did maybe its just a thing for the Pi?) but under Xubuntu is it possible set that for a mac? or something or is there a whole diffrent issue im not just seeing other than tiny arse screen just being pushe dto do something its not designed to be used with.
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