2011 Mac Mini with Dell u2713hm..

[waloshin]

My dual link dvi to display port stopped working so Apple support told me to reset my pram I did. Now my monitor turns off at random and turns back on.

Is it my monitor or Mac or cord?

 

[Altis]

Do you have another machine you can test the cable and monitor with?

It sounds like it's the Mac, to me.