Laptop built-in display black screen when HDMI plugged-in

[Francesco Guagnano]

Hi,

 

I am having a problem with the display of my laptop when it is connected in HDMI to an external monitor.

Basically at boot after the apple logo the laptop display turns black and does not show any content.

I must say that the external monitor works perfectly both audio and video.

I've tried all of them and I've been searching on the internet for more than a week but to no avail.

 

Could someone help me?

 

Thanks in advance.

Edited August 24, 2021 by Francesco Guagnano

[Allan]

Hi and welcome to InsanelyMac 😄

 

To understand what we're dealing, you need to do this first:

 

[Francesco Guagnano]

Thanks for reply!

I updated my signature!

[Francesco Guagnano]

I add that by removing the boot flag -wegnoegpu the laptop's display returns to work properly when it comes back from sleep mode.

I don't know if this can help!

[Allan]

Glad to know that it worked, and your problem was solved 😉

1 hour ago, Francesco Guagnano said:

I add that by removing the boot flag -wegnoegpu

According to WEG FAQ this flag do this: -wegnoegpu to disable all external GPUs (or add disable-gpu property to each GFX0).

[Francesco Guagnano]

Unfortunately I haven't solved much because if the laptop doesn't go into sleep mode the display won't work. Do you have any suggestions?

[Allan]

Run this app: RunMe

At the end of the app process, a zip file will generated at your desktop, it will be called "SendMe..." then you upload it here.

[Francesco Guagnano]

You can find my EFI folder clicking the following link: https://github.com/ciccio-90/Lenovo_V110-15ISK_Hackintosh_OpenCore_macOS_Big_Sur/tree/main/EFI

I updated the ioreg file and "SendMe..." removig the EFI folder and ioreg file because the zip exceded the 10 MB.

Francesco’s MacBook Pro.ioreg

Anyway I tried to boot the laptop with HDMI connector and an then to disconnect then reconnect HDMI but the situation is the same.

Send me Francescos-MBP.home-life.hub.zip

Edited August 24, 2021 by Francesco Guagnano

[Baio77]

Test this patch my Acer https://github.com/Baio1977/Acer-Aspire-E5-574G

 

Spoiler

            <key>PciRoot(0x0)/Pci(0x2,0x0)</key>
            <dict>
                <key>AAPL,GfxYTile</key>
                <data>AQAAAA==</data>
                <key>AAPL,ig-platform-id</key>
                <data>AAAWGQ==</data>
                <key>AAPL,slot-name</key>
                <string>Internal@0,2,0</string>
                <key>complete-modeset</key>
                <data>AQAAAA==</data>
                <key>device-id</key>
                <data>FhkAAA==</data>
                <key>device_type</key>
                <string>VGA compatible controller</string>
                <key>disable-agdc</key>
                <data>AQAAAA==</data>
                <key>enable-hdmi-dividers-fix</key>
                <data>AQAAAA==</data>
                <key>force-online</key>
                <data>AQAAAA==</data>
                <key>framebuffer-con0-enable</key>
                <data>AQAAAA==</data>
                <key>framebuffer-con1-enable</key>
                <data>AQAAAA==</data>
                <key>framebuffer-con1-type</key>
                <data>AAgAAA==</data>
                <key>framebuffer-con2-enable</key>
                <data>AQAAAA==</data>
                <key>framebuffer-fbmem</key>
                <data>AACQAA==</data>
                <key>framebuffer-patch-enable</key>
                <data>AQAAAA==</data>
                <key>framebuffer-stolenmem</key>
                <data>AAAwAQ==</data>
                <key>hda-gfx</key>
                <string>onboard-1</string>
                <key>model</key>
                <string>Intel HD Graphics 520</string>
            </dict>

 

Edited August 25, 2021 by Baio77

[Francesco Guagnano]

Unfortunately nothing has changed.

Only using the sleep mode then it works.

Edited August 25, 2021 by Francesco Guagnano

[Francesco Guagnano]

No, it is a 2K.

I should inject the built-in display EDID or the external monitor one?

Edited August 25, 2021 by Francesco Guagnano

[Francesco Guagnano]

Can you help me also with the internal Realtek SD Card Reader?

It is not recognized.

I tried various kexts but nothing.

I also tried to modify the AppleUSBCardReader.kext plugin of AppleStorageDriver.kext under S/L/E but also in this case nothing to do.

 

Thanks in advance.

[Slice]

2 hours ago, Francesco Guagnano said:

No, it is a 2K.

I should inject the built-in display EDID or the external monitor one?

In theory you should inject built-in display EDID to your videocard connector which correspond to the built-in display.

[Allan]

7 minutes ago, Francesco Guagnano said:

Can you help me also with the internal Realtek SD Card Reader?

It is not recognized.

I tried various kexts but nothing.

I also tried to modify the AppleUSBCardReader.kext plugin of AppleStorageDriver.kext under S/L/E but also in this case nothing to do.

 

Thanks in advance.

This topic you're asking help about video. If you need help about Card Reader, you can open a new topic.

Or a better idea is searching about it on the Forum, there's some good ones:

1. Realtek PCIe Card Reader Driver for macOS

2. Sinetek's Driver for Realtek "RTSX" SDHC Card Readers

 

[Francesco Guagnano]

54 minutes ago, Slice said:

In theory you should inject built-in display EDID to your videocard connector which correspond to the built-in display.

I will try!

53 minutes ago, Allan said:

This topic you're asking help about video. If you need help about Card Reader, you can open a new topic.

Or a better idea is searching about it on the Forum, there's some good ones:

1. Realtek PCIe Card Reader Driver for macOS

2. Sinetek's Driver for Realtek "RTSX" SDHC Card Readers

 

Sorry!

[Francesco Guagnano]

I tried to inject the EDID but the result is the same of previous.

Any other suggestion?

Edited August 25, 2021 by Francesco Guagnano

[Francesco Guagnano]

The brightness works perfectly! I have also mapped the F11 button to decrese and the F12 one to increase and also when the builtin display is in the black screen condition if I press the F11 or the F12 I see the screen becames clear or dark.

Edited August 25, 2021 by Francesco Guagnano

[Francesco Guagnano]

I posted my situation video!

[Francesco Guagnano]

I tried to inject

 

<key>@0,AAPL,boot-display</key>
<integer>1</integer>

 

in my config.plist under DeviceProperties -> Add -> PciRoot(0x0)/Pci(0x2,0x0) but it cannot override. In fact checking in IOReg the situation is the same.

[Francesco Guagnano]

After NVRAM reset the system does not start! 

I also revert my config.plist at original one.

Help help help!!!

 

Edited August 26, 2021 by Francesco Guagnano

[Francesco Guagnano]

After reset NVRAM multiple times I also have this

 

[Francesco Guagnano]

Disabling the ISP with command csrutil disable from terminal in Recovery the system starts!

[Francesco Guagnano]

I have alrady enabled the SIP and all work as before.

I also drag the white Finder’s bar to the built-in screen and so in IOReg the built-in becomes the boot display but after system rebooting the situation not change because the built-in screen is black and if I go in IOReg I see that the boot display is the external monitor.

So at reboot the system overrides the boot display with the external one.