I contacted Tech Support from AOC.
In the meantime I figured out that when HDMI/DP is used Audio-In is disabled. It can only be used with VGA/DVI.
With HDMI/DP user is forced to rely on HDMI/DP audio since there is no option to force the use of Audio-In as the audio source like on most monitors...
Hello,
I have AOC u2868pqu and no sound coming out of the built-in speakers (audio-in cable in Audio-in port). I found out the speakers only start working when PIP/PBP is turned on (even with nothing as secondary source) and Audio is set to ON in PIP settings. speakers become mute again as soon...