[Guide] Dell Inspiron 15 7559 (skylake)

[slipanot]

I finally got it working with the clover usb method, but I can't manage to boot OC without going into clover first.

How did you fix that problem?

Honestly I don't have an answer. I just ran into the same issue again with this laptop yesterday. I tried an upgrade to Big Sur "which I have never been able to accomplish with THIS laptop" I finally booted up to a black screen. I had sound, etc. Just a black screen. When I tried to go back to Catalina it booted to a black screen. Once I rebooted with a Clover USB EFI I was able to get back into Catalina. Then from that point it has booted with OC normally. DO NOT clear NVRAM in OpenCore picker. It leads to loading a black screen for my laptop.

 

[slipanot]

download oc folder file, success to install big sur.
works well: 4K display through EDID inject, intel ac 9260 using itlwn kext, touch screen(amazing)
not worked: eth card, bluetooth.

What are you EDID are you injecting for the 4k model to boot Big Sur?

 

[dodofung]

What are you EDID are you injecting for the 4k model to boot Big Sur?

EDID may be different for different screen. this is mine:

Please add it to DeviceProperties/Add/PciRoot(0x0)/Pci(0x2,0x0) like this:
Create a new entry: AAPL00,override-no-connect (with type data)
And set the value to:

00FFFFFFFFFFFF004C834FC30000000000190104A52213780AC585A3574F9C2612505400000001010101010101010101010101010101A6A600A0F07019803020260058C21000001AD8CC00E0F17071813020260058C21000001A000000FE0044574A305280313536464C0A2000000000000241219B610000002B010A2020004D

how get edid:
boot from linux, xrandr -props , then convert to edid, must be converted.

 

[slipanot]

EDID may be different for different screen. this is mine:

Please add it to DeviceProperties/Add/PciRoot(0x0)/Pci(0x2,0x0) like this:
Create a new entry: AAPL00,override-no-connect (with type data)
And set the value to:

00FFFFFFFFFFFF004C834FC30000000000190104A52213780AC585A3574F9C2612505400000001010101010101010101010101010101A6A600A0F07019803020260058C21000001AD8CC00E0F17071813020260058C21000001A000000FE0044574A305280313536464C0A2000000000000241219B610000002B010A2020004D

how get edid:
boot from linux, xrandr -props , then convert to edid, must be converted.

How do you convert the output to EDID?
Also xrandr -props gives me an unrecognized option

 

[dodofung]

How do you convert the output to EDID?
Also xrandr -props gives me an unrecognized option

sorry, xrandr --props, also you need disconnect all external display.
use the python scripts in the attached file.
the output is saved into display_info.txt, the run.

python patcher.py

 

[slipanot]

Looking for some assistance if possible. No matter what, Im not able to update to Big Sur with this laptop. I have tried clean installs and upgrades from Catalina with no success. If I am able to finally make it through the upgrade process the machine boots to a black screen. Everything in Catalina up to this point works flawless. I have no issues. I have been able to upgrade to upgrade to Big Sur on all my other machines without issues. Even my AMD machine went flawless. So I'm stumped. If anyone has any advice it would be much appreciated.

 

[jcarcinogen]

Looking for some assistance if possible. No matter what, Im not able to update to Big Sur with this laptop. I have tried clean installs and upgrades from Catalina with no success. If I am able to finally make it through the upgrade process the machine boots to a black screen. Everything in Catalina up to this point works flawless. I have no issues. I have been able to upgrade to upgrade to Big Sur on all my other machines without issues. Even my AMD machine went flawless. So I'm stumped. If anyone has any advice it would be much appreciated.

When you reboot and try the same process again do you still get the black screen? If I use clover after using OC I get a black screen but if I reboot and try again it works. Is it a black screen or is the monitor not getting any signal? You said you can hear sound but the screen is black? Is your 4k screen touch?

 

[Feartech]

Looking for some assistance if possible. No matter what, Im not able to update to Big Sur with this laptop. I have tried clean installs and upgrades from Catalina with no success. If I am able to finally make it through the upgrade process the machine boots to a black screen. Everything in Catalina up to this point works flawless. I have no issues. I have been able to upgrade to upgrade to Big Sur on all my other machines without issues. Even my AMD machine went flawless. So I'm stumped. If anyone has any advice it would be much appreciated.

MacBookPro13,1 would be a better choice in smbios

 

[jcarcinogen]

Looking for some assistance if possible. No matter what, Im not able to update to Big Sur with this laptop. I have tried clean installs and upgrades from Catalina with no success. If I am able to finally make it through the upgrade process the machine boots to a black screen. Everything in Catalina up to this point works flawless. I have no issues. I have been able to upgrade to upgrade to Big Sur on all my other machines without issues. Even my AMD machine went flawless. So I'm stumped. If anyone has any advice it would be much appreciated.

SATA-unsupported.kext is replaced CtlnaAHCIPort.kext for big sur. I would also remove Sinetek-rtsx.kext. I haven't ever used hwpenabler.kext or CPUFriend.kext, you might want to check those for Big Sur compatibility.

 

[slipanot]

SATA-unsupported.kext is replaced CtlnaAHCIPort.kext for big sur. I would also remove Sinetek-rtsx.kext. I haven't ever used hwpenabler.kext or CPUFriend.kext, you might want to check those for Big Sur compatibility.

Ive tried both with SATA unsupported and CtlnaAHCIPort. Neither one seems to make a difference. Also I've tried with both HWP and CPU Friend Disabled. Neither make a difference also. I have a 4K touch screen model. Im not using an external monitor either. Im using the built in laptop monitor. I get a black screen with OpenCore in Big Sur. Ive been yet to get the latest clover r5126 to boot on my machine so I've been sticking with the OpenCore route when trying to upgrade to Big Sur.