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TDP158: HDMI output abnormal

Part Number: TDP158

Hi,

I used DP dual mode as input source, and HDMI connector output,

But system detect it is DVI output, so resolution only FHD. I used NVIDIA GPU , Monitor is DELL P2415Q.

Is possibly TDP158 send wrong EDID to GPU? Is there need any special setting for TDP158?

I used PS8402A have no this issue. thanks!

Jeff