It is the second that I try and it does that behavior every time it turns on after standby.
Deep Standby is OFF on both DP and HDMI.
Monitor is connected with DP, with a DP-to-DP cable that does not have the DP_PWR PIN-20 connected, so it should be fine...right??http://monitorinsider.com/displayport/dp_pin20_controversy.html
Thank you all.