Greetings. So i just tried to connect my ps4 to my HP Compaq LA2405 Monitor, through an displayport/HDMI adapter made by a company called "vivanco" (But there wasnt so much information, only website i found the adapter was ebay.). But as soon as i plugged in the displayport adapter, nothing happened and my monitor always shows after a short amount of time "Going into sleepmode" on my screen. The Adapter also seems to have a little bit of a loose contact. This is the adapter on ebay: Im thankfull for every awnser i recieve.
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