dual-monitor issue

  1. joeblough

    dual monitor hell - any guidance?

    Hi all, i realize dual monitors on High Sierra can be trouble sometimes. i have it working properly with an ATI RX560, but i get the dreaded GPU lockups once a month or so. if i use an nvidia card, i just can't get both monitors to work. i either have a completely dead 2nd monitor, or the 2nd...
  2. physicsguy47

    Laptop second monitor issue

    I'm using an HP Probook 6570b with HD4000 graphics running OS 10.11.3. I'm trying to use a second monitor connected to my VGA port, but I'm having some major issues. If I boot without the monitor connected and then plug it in, it isn't recognized. If I boot WITH it plugged in, it duplicates...