IsTypeCOnlySystem error during Big Sur installation

[heikkonen]

Hi everyone! I am very new to hackintosh and trying to perform my very first HacOS installation with OpenCore on a Thinkpad X270 comes with i5-7300u. I followed Dortania's guide carefully to prepare my bootable USB. I prepared the config.plist file myself, as described on Dortania's guide. I came to the stage of booting from USB without any problems, but after booting, I get an error on the loading screen, last lines of which are as follows:

 

Lilu patcher: @ failed to solve __ZN31AppleIntelFrameBufferController17IsTypeCOnlySystem

WhateverGreen igfx: @ TCCD: Failed to route te function IsTypeCOnlySystem

HID: Legacy shim 2

AGDCBacklightControl: Didn't find DPMicro.

 

I will also upload the photo of the error. When I searched the "IsTypeCOnlySystem" error on other forums, I saw a few similar topics, but the solutions didn't work or I didn't quite understand what to do. I tried again and again in different combinations by making a few changes in the kext order in the config.plist and adding -igfxblr to the boot arguments. Other than these, I have no idea what to do in that case. I am open to any help. Thank you so much in advance.

 

Lenovo Thinkpad X270 | Intel Core i5-7300U | Intel HD Graphics 620 | Intel WiFi 8265 | 8GB RAM

 

config.plist

[heikkonen]

It worked! Thank you so much! It boots into the installing screen without a problem.

 

However, I'm still curious about what we exactly have done here. Can you briefly explain me what are these 1B or 2 locations and what should I check in the future to not face a similar problem.

[Anto65]

24 minutes ago, heikkonen said:

It worked! Thank you so much! It boots into the installing screen without a problem.

 

However, I'm still curious about what we exactly have done here. Can you briefly explain me what are these 1B or 2 locations and what should I check in the future to not face a similar problem.

If it can help in addition to the excellent explanation of @Hervé

 

https://dortania.github.io/OpenCore-Install-Guide/config-laptop.plist/kaby-lake.html#add-2

[greythorne]

On 10/5/2021 at 12:53 AM, heikkonen said:

Hi everyone! I am very new to hackintosh and trying to perform my very first HacOS installation with OpenCore on a Thinkpad X270 comes with i5-7300u. I followed Dortania's guide carefully to prepare my bootable USB. I prepared the config.plist file myself, as described on Dortania's guide. I came to the stage of booting from USB without any problems, but after booting, I get an error on the loading screen, last lines of which are as follows:

 

Lilu patcher: @ failed to solve __ZN31AppleIntelFrameBufferController17IsTypeCOnlySystem

WhateverGreen igfx: @ TCCD: Failed to route te function IsTypeCOnlySystem

HID: Legacy shim 2

AGDCBacklightControl: Didn't find DPMicro.

 

I will also upload the photo of the error. When I searched the "IsTypeCOnlySystem" error on other forums, I saw a few similar topics, but the solutions didn't work or I didn't quite understand what to do. I tried again and again in different combinations by making a few changes in the kext order in the config.plist and adding -igfxblr to the boot arguments. Other than these, I have no idea what to do in that case. I am open to any help. Thank you so much in advance.

 

Lenovo Thinkpad X270 | Intel Core i5-7300U | Intel HD Graphics 620 | Intel WiFi 8265 | 8GB RAM

 

config.plist 33.91 kB · 3 downloads

What about the ACPI files?