Possible solution?
Hi
I may have stumbled on a fix. I read somewhere else that people were having problems with 'broken' colour profiles. So I opened the Settings...Displays, and then on each monitor reset the colour profile to the default for that monitor (in my case Samsung U28E590) .... and the periodic blanking I was getting has stopped! Previously it was blanking for about a second every minute or so)
Hope this works for you!
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