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Precision M4800: black screen with Nvidia K2100M in High Sierra


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This is my laptop  dell m4800 

i7 4810mx


3k QHD(I don't know this interface is EDP or LVDS.)

mac os:13.6

My problems:

1.The internal screen is black Screen.  The DP is good .but i don't want to use external monitor.

2.This laptop don't have intel HD (Does that mean I can't use the internal screen? )

3.If I use AMD graphics card(m5100), can I drive the internal screen?

Thank you very much




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