Feartech
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you should be using iMac18,1
shouldn't be needed:
AAPL,GfxYTile
you should be using iMac18,1
you should be using iMac18,1
shouldn't be needed:
AAPL,GfxYTile
you should be using iMac18,1
shouldn't be needed:
AAPL,GfxYTile
should be iMac18,1 as you only have intel graphicsHi @Feartech ,
I have changed the SMBIOS with iMac18,1 and 18,3 but I have a black screen at login step
should be iMac18,1 as you only have intel graphics
what happens when you just have:
View attachment 560146
make sure DVMT is set to 64MB in BIOS
should be iMac18,1 as you only have intel graphics
what happens when you just have:
View attachment 560146
make sure DVMT is set to 64MB in BIOS
Sleep/Wake issues are usually USB related, i.e. incorrectly set USB port making a power call as the system shuts down. Causing the system to instantly wake and reboot.
As you were told, iMac18,1 is the better SMBIOS for your Kaby Lake (KBL) system, as the iMac 18,1 uses just the HD630 IGPU for graphics processing. The same can not be said for the Coffee Lake iMac19,1 system, which uses a Radeon Pro 575X dGPU for the main graphics processing and the UHD 630 for Quicksync, Encoding & Decoding process.
Switching SMBIOS may alleviate the Black Screen issue, assuming you have a Display-Out Framebuffer set for your KBL HD 630 IGPU.
Post a copy of your Revised EFI folder, so we can see what you are using now.
Remember to redact/delete your Serial number from the config.plist before you post a copy here.
Hello @Edhawk,
Thank you for your reply.
I have used iMac 18,1 but I have a black screen instead of the login screen.
Her my EFI
Sleep/Wake issues are usually USB related, i.e. incorrectly set USB port making a power call as the system shuts down. Causing the system to instantly wake and reboot.
As you were told, iMac18,1 is the better SMBIOS for your Kaby Lake (KBL) system, as the iMac 18,1 uses just the HD630 IGPU for graphics processing. The same can not be said for the Coffee Lake iMac19,1 system, which uses a Radeon Pro 575X dGPU for the main graphics processing and the UHD 630 for Quicksync, Encoding & Decoding process.
Switching SMBIOS may alleviate the Black Screen issue, assuming you have a Display-Out Framebuffer set for your KBL HD 630 IGPU.
Post a copy of your Revised EFI folder, so we can see what you are using now.
Remember to redact/delete your Serial number from the config.plist before you post a copy here.
The Intel HD Graphics 630 iGPU has a Black Screen issue.
Add the igfxagdc=0 boot arg and try rebooting.