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macOs HighSierra hackintosh : dual screen HDMI issues

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May 7, 2018
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Hi,
i have a Xiaomi notebook pro i5 8225u version with 8go ddr4.
I do successfully installed macOs HighSierra with Windows 10 as dual boot on 2 separate ssds.
On macOs everything working well, i only have some minor bugs but nothing really annoying, except that :
i tried to plug in and use my external screen with HDMI port, but when i plug it, my laptop screen turn off and only my external screen is working. When i remove the HDMI cable, my screen is still black, I can't do anything but restart my computer. My external screen is successfully recognised in my settings, I can use my laptop on my external screen when plugged in, but i would like to use it as a second screen not as my primary one.


Could you guys help me please, thanks.
 
Hi,
i have a Xiaomi notebook pro i5 8225u version with 8go ddr4.
I do successfully installed macOs HighSierra with Windows 10 as dual boot on 2 separate ssds.
On macOs everything working well, i only have some minor bugs but nothing really annoying, except that :
i tried to plug in and use my external screen with HDMI port, but when i plug it, my laptop screen turn off and only my external screen is working. When i remove the HDMI cable, my screen is still black, I can't do anything but restart my computer. My external screen is successfully recognised in my settings, I can use my laptop on my external screen when plugged in, but i would like to use it as a second screen not as my primary one.


Could you guys help me please, thanks.

Please fix your profile as per FAQ:
https://www.tonymacx86.com/threads/faq-read-first-laptop-frequent-questions.164990/

You should read here regarding EDID override:
https://www.tonymacx86.com/threads/readme-common-problems-in-10-13-high-sierra.233582/
 
Thanks for your reply. I don't understand, i downloaded FixEdid, but when it come to load Vanilla EDID i'm lost. Where can i find it ?
 
Thanks for your reply. I don't understand, i downloaded FixEdid, but when it come to load Vanilla EDID i'm lost. Where can i find it ?

You can usually find your vanilla EDID in your Clover bootlog.
 
I generated my bootlog file with Clover Configurator, there is noting related to vanilla in it >< . Is there any tutorial i could follow to get it ?
Im trying to follow these instructions from worm :

1.Get vanilla EDID

2.Find the 21th word, (95 in my case: 00 FF FF FF FF FF FF 00 06 AF 3D 12 00 00 00 00 00 17 01 04 95 1F …)

3.Replace it with a Apple screen’s value(get from FixEDID - MBP worked in my case,MBA not.)

4.Create folder(with file) under /System/Library/Displays/Contents/Resources/Overrides with modified EDID.

5.Reboot & test


But im stuck at step 1.
I linked my generated bootlog.txt
 

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I generated my bootlog file with Clover Configurator, there is noting related to vanilla in it >< . Is there any tutorial i could follow to get it ?
Im trying to follow these instructions from worm :

1.Get vanilla EDID

2.Find the 21th word, (95 in my case: 00 FF FF FF FF FF FF 00 06 AF 3D 12 00 00 00 00 00 17 01 04 95 1F …)

3.Replace it with a Apple screen’s value(get from FixEDID - MBP worked in my case,MBA not.)

4.Create folder(with file) under /System/Library/Displays/Contents/Resources/Overrides with modified EDID.

5.Reboot & test


But im stuck at step 1.
I linked my generated bootlog.txt

From your bootlog, EDID:
Code:
6:575  0:000  --- Discovered EDID Table size:128
6:575  0:000  000  |  00  FF  FF  FF  FF  FF  FF  00  09  E5
6:575  0:000  010  |  47  07  00  00  00  00  12  1B  01  04
6:575  0:000  020  |  A5  22  13  78  02  1B  BB  A6  58  55
6:575  0:000  030  |  9D  26  0E  4F  55  00  00  00  01  01
6:575  0:000  040  |  01  01  01  01  01  01  01  01  01  01
6:575  0:000  050  |  01  01  01  01  9C  3B  80  36  71  38
6:575  0:000  060  |  3C  40  30  20  36  00  58  C2  10  00
6:575  0:000  070  |  00  1A  FD  2D  80  0E  71  38  28  40
6:575  0:000  080  |  30  20  36  00  58  C2  10  00  00  1A
6:575  0:000  090  |  00  00  00  FE  00  42  4F  45  20  43
6:575  0:000  100  |  51  0A  20  20  20  20  20  20  00  00
6:575  0:000  110  |  00  FE  00  4E  56  31  35  36  46  48
6:575  0:000  120  |  4D  2D  4E  36  31  0A  00  30
 
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