I own a ten year old Dell 1909W monitor. I attempted to hook my PS4 (PlayStation 4) to it using a HDMI-DVI adapter. It worked fine for about 30 seconds. But after that the 1909W kept entering PSM (power save mode). I unplugged it multiple times. I also used different cables. I know the adapter works using other tests. But I cannot figure out what is going on. Again it’s a Dell 1909W 16:9 monitor.