How do I stop my external monitor from occasionally blacking out? I have a 2011 MBP which is connected to a 1920x1080, 144 Hz monitor.  I am using one of these cables to connect it: https://www.amazon.com/gp/product/B00YOQYQWY/ref=oh_aui_detailpage_o03_s01?ie=UTF8&amp;psc=1

On occasion the display will go black for a few seconds before turning back on.  It's not actually disconnecting since I would get a notification on my laptop screen of that event.  Sometimes I even hear a click noise when this happens.

It only happens when the resolution is set to 1080, even if I lower the refresh rate.  At lower resolutions it never happens.  If I use the DisableMonitor app to turn off my laptop's main screen my external display will still sometimes black out.  It seems to occur regardless of activity, as I can leave it idling with nothing on the screen or I can be playing an intensive game and it won't happen any more or less frequently.  This happens on Windows as well.

Anyone know the cause of this?
Does it sometimes go completely black and you can not seem to get it turned on again?
Does the monitor have its own menu button on the monitor itself to change monitor settings? 


I aks because sometimes the monitor has its own sleep mode independent from the operating system.

Check the monitor-menu and check what settings are there and try find a manual - either online or the one made out of paper that came with your monitor.