Hi Recently bought two Dell U2417H monitors to replace old dell monitors, but having a problem when mac pro silver tower 2010 won't find the DP connections.
They are connected to ATI radeon HD 5870 1024 MB graphics card.
I can get them working by connecting my LG tv and then switch on and off mirror display a couple of times.
But it does mean I have to have the tv connected otherwise I lose the DP connections again.
I have have tried Dell, Ati and apple websites for a solution.
Any thoughts gratefully received ?
