black screen after verbose

[doquockhanh12]

after loading verbose, my screen goes black, but the external monitor is still on and my mouse is on it
Could you help me to fix it?
DELL Latitude 7480
CPU: i7-7600U
Intel(R) HD Graphics 620
Wifi Card:

[Lovely-XPP]

You can try this one first.

https://drive.google.com/file/d/1iKQ40PlBV-kVyHVCATGkO2AHL8RIURie/view?usp=share_link

[doquockhanh12]

I tried and my screen is still black

[doquockhanh12]

I tried adding -igfxblr to boot-args, my screen shows the Apple logo for a few seconds then turns to black

.

[Lovely-XPP]

Did you try to boot without the external monitor before?
BTW, you may try to change your BIOS setting to the same as the README says.

[Lovely-XPP]

I tried adding -igfxblr to boot-args, my screen shows the Apple logo for a few seconds then turns to black

.

you may also try to add igfxonln=1 to boot-args.

[doquockhanh12]

Did you try to boot without the external monitor before? BTW, you may try to change your BIOS setting to the same as the README says.

I tried all of them but it don't work for me

[Lovely-XPP]

I would like to know if mouse works or not when it turns black

[doquockhanh12]

I would like to know if mouse works or not when it turns black

I can control my mouse when the screen turns black

[Lovely-XPP]

Okey, do you enter the USB installation or installed MacOS system

[doquockhanh12]

Okey, do you enter the USB installation or installed MacOS system

i enter installed MacOs system

[Lovely-XPP]

You may try to check if the system is normal or break. If you have a USB with installation, you can enter the USB installation to confirm what is the main problem, the system or OC.

[doquockhanh12]

How can i check it

[Lovely-XPP]

I think the most easy way is to enter the USB installation, if success, it is likely a problem on the system.

[doquockhanh12]

I think the most easy way is to enter the USB installation, if success, it is likely a problem on the system.

yes, my USB installation work very well, just my screen has some error.

[Lovely-XPP]

Do you mean the screen turns black in USB installation
BTW, what config do you use for now.

[doquockhanh12]

You can try this one first.

https://drive.google.com/file/d/1iKQ40PlBV-kVyHVCATGkO2AHL8RIURie/view?usp=share_link

i'm using it

[Lovely-XPP]

Okey, wait a minute.

[Lovely-XPP]

Try this one, overwrite the origin one:

config.plist.zip

[Lovely-XPP]

or you can manually clear Nvram -> 7C436110-AB2A-4BBB-A880-FE41995C9F82 -> prev-lang:kbd, just clear the string, not delete the entry.

[doquockhanh12]

Try this one, overwrite the origin one:

config.plist.zip

I'm so sorry, but my screen still black

[greenfire11]

I have the same problem, did you manage to fix it

[Lovely-XPP]

I am sorry about that but I can not test the EFI on my own because I don't have not the laptop. A lot of factors will cause the problem, including USB driver, BIOS setting, hardware such as RAM and so on. Therefore it is difficult for me to give some useful suggestions for you, especially I don't have the laptop. sorry again.

[Lovely-XPP]

If you have problem to install macOS by USB, you may try recovery image.

[ZinK0]

DELL Latitude 7480
CPU: i7-7600U
Intel(R) HD Graphics 620
Intel Wifi + Bluetooth

I also have the same problem like you. After loading Apple Logo and stuck with cursor and grey screen. Nothing on monitor or LCD. Do you manage to fix that?