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About UHD 620 graphics card on Mojave 14.3

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Joined
Mar 4, 2019
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76
Motherboard
Dell Inspiron 15 7580
CPU
i5-8265u
Graphics
UHD 620
Mobile Phone
  1. iOS
Hi everyone, I'm a newbie of hackintosh and I wanna know how to correctly let my laptop fix the sleep problem.
My laptop is Dell inspiron 15 7580
here is the spec of my laptop
when I try to let the laptop get sleep it will become black screen and I can do nothing for it.
Or trying to dim the lighting and the hotkeys just can't do it(but the hot key can control the volume, stop/play etc..).
Also, when I try to get HDMI output to another monitor it will be freezing and I can't control it,
the only way is to reboot it.

And I go to Chinese Famous internet market and pay to get some help,unfortunately they all said can't do it or not get to fix the problem. I just waste 4-500 RMB to fix my laptop and the problem are still don't solve.

Please forgive my English are poor and if somebody want to help me , please feel free to contact me and I will let you know all the informations you need.
Please help. Thanks a lot.
 
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