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[Guide] Dell Inspiron 15 7559 (skylake)

Joined
Jul 14, 2019
Messages
71
Motherboard
Dell 7559
CPU
i7-6700HQ
Graphics
GTX 960M
If able you're able to can you walk me through this? I got my edid from Linux but I do not have a display_info.txt. I cannot get the python file to open properly from Windows or mac. Can you help me convert my 4k edid? Is there a guide anywhere? Thank you so very much!!

I would really appreciate some assistance converting my EDID for my 4k 7559. OC and big sur work wonderfully on my i5 1080p 7559. On my 4k one however I get hdmi display only no internal display.
My edid is this
Screen 0: minimum 320 x 200, current 3840 x 2160, maximum 16384 x 16384
eDP-1 connected primary 3840x2160+0+0 (normal left inverted right x axis y axis) 344mm x 194mm
EDID:
00ffffffffffff004c834fc300000000
00190104a52213780ac585a3574f9c26
12505400000001010101010101010101
010101010101d8cc00a0f07019803020
260058c21000001ad8cc00e0f1707181
3020260058c21000001a000000fe0044
574a305280313536464c0a2000000000
000241219b610000002b010a202000f5

I am having a terrible time converting it, I know it is asking a lot thank you guys you have all been so helpful!!!
Run the xrandr --props
Copy EDID value
Create a text file on desktop named "display_info.txt"
Paste the edid like shown in figure (adding the text 'EDID:' before the numbers in the txt file)
Copy the python file to desktop
Run it (as shown in terminal)
20201128_191450.jpg
 
Joined
Jul 14, 2019
Messages
71
Motherboard
Dell 7559
CPU
i7-6700HQ
Graphics
GTX 960M
If able you're able to can you walk me through this? I got my edid from Linux but I do not have a display_info.txt. I cannot get the python file to open properly from Windows or mac. Can you help me convert my 4k edid? Is there a guide anywhere? Thank you so very much!!

I would really appreciate some assistance converting my EDID for my 4k 7559. OC and big sur work wonderfully on my i5 1080p 7559. On my 4k one however I get hdmi display only no internal display.
My edid is this
Screen 0: minimum 320 x 200, current 3840 x 2160, maximum 16384 x 16384
eDP-1 connected primary 3840x2160+0+0 (normal left inverted right x axis y axis) 344mm x 194mm
EDID:
00ffffffffffff004c834fc300000000
00190104a52213780ac585a3574f9c26
12505400000001010101010101010101
010101010101d8cc00a0f07019803020
260058c21000001ad8cc00e0f1707181
3020260058c21000001a000000fe0044
574a305280313536464c0a2000000000
000241219b610000002b010a202000f5

I am having a terrible time converting it, I know it is asking a lot thank you guys you have all been so helpful!!!
Try this:
(based on your output)
00FFFFFFFFFFFF004C834FC30000000000190104A52213780AC585A3574F9C2612505400000001010101010101010101010101010101A6A600A0F070198030203020260058C21000001A000000FE0044574A305280313536464C0A2000000000000241219B610000002B010A2020008E

Also if you get it working do share the EFI if you don't mind,
 
Last edited:
Joined
Sep 27, 2016
Messages
187
Motherboard
Gigabyte Aorus z390 Elite
CPU
i7-9700K
Graphics
Vega 64
Mac
  1. iMac
  2. MacBook Pro
Mobile Phone
  1. Android
Im in the same boot. I cannot get the python patcher script to work right in linux. Any help would be much appreciated.

Nevermind... I got it :) my bad
 

Attachments

  • display_info.txt
    265 bytes · Views: 23
Joined
Jul 14, 2019
Messages
71
Motherboard
Dell 7559
CPU
i7-6700HQ
Graphics
GTX 960M
Im in the same boot. I cannot get the python patcher script to work right in linux. Any help would be much appreciated.

Nevermind... I got it :) my bad
Did you get to boot Big Sur?
 
Joined
Sep 27, 2016
Messages
187
Motherboard
Gigabyte Aorus z390 Elite
CPU
i7-9700K
Graphics
Vega 64
Mac
  1. iMac
  2. MacBook Pro
Mobile Phone
  1. Android
Finally got Big Sur to run on my Dell 7559. The patched EDID method worked. It allows me to upgrade or Clean install to Big Sur!. Everything works as normal. Thanks so much @Heisenberg68 for bringing this to my attention. Who would have known. Ive run High Sierra, Mojave and Catalina on this laptop and have never needed my EDID patched. Big Sur will not boot without it being patched. My EFI is attached if it'll help anyone else.
 

Attachments

  • OC 7559.zip
    60.7 MB · Views: 162
Joined
May 15, 2020
Messages
45
Motherboard
Dell Inspiron 15 7559
CPU
i7 6700k
Graphics
530
Mac
  1. Mac Pro
Finally got Big Sur to run on my Dell 7559. The patched EDID method worked. It allows me to upgrade or Clean install to Big Sur!. Everything works as normal. Thanks so much @Heisenberg68 for bringing this to my attention. Who would have known. Ive run High Sierra, Mojave and Catalina on this laptop and have never needed my EDID patched. Big Sur will not boot without it being patched. My EFI is attached if it'll help anyone else.
Do you have a OC for Mojave or Catalina? Thank you
 
Joined
May 14, 2020
Messages
31
Motherboard
asus m5a99
CPU
8320e
Graphics
rx580 with 10.15.4
Try this:
(based on your output)
00FFFFFFFFFFFF004C834FC30000000000190104A52213780AC585A3574F9C2612505400000001010101010101010101010101010101A6A600A0F070198030203020260058C21000001A000000FE0044574A305280313536464C0A2000000000000241219B610000002B010A2020008E

Also if you get it working do share the EFI if you don't mind,
I put this in the proper place in my config.plist I still have a black screen was my edid from linux wrong somehow? what distro of linux should I be using thank you!!
 
Joined
Sep 27, 2016
Messages
187
Motherboard
Gigabyte Aorus z390 Elite
CPU
i7-9700K
Graphics
Vega 64
Mac
  1. iMac
  2. MacBook Pro
Mobile Phone
  1. Android
Do you have a OC for Mojave or Catalina? Thank you
Yes. I have Mojave, catalina and Big Sur on this laptop. All work normal. Even with the patched EDID, Catalina and Mojave still boot normal
 
Joined
May 14, 2020
Messages
31
Motherboard
asus m5a99
CPU
8320e
Graphics
rx580 with 10.15.4
Last thing I just want to say thank you to everyone!!! The edid that worked for me was one I finally made thanks to

Heisenberg68's guide.​

I do think they are unique to every dell 7559 4k screen.
00FFFFFFFFFFFF004C834FC30000000000190104A52213780AC585A3574F9C2612505400000001010101010101010101010101010101A6A600A0F07019803020260058C21000001AD8CC00E0F17071813020260058C21000001A000000FE0044574A305280313536464C0A2000000000000241219B610000002B010A2020004D

if anyone wants to try it
Last issue I have, Is there an easy way to fix the brightness key in Big sur for my 4k 7559? I do have a patched SSDT-PNLF but Its from a 4k poster here. How do I make one for my exact laptop. Because when I boot the screen is off because the backlight needs to be at 100%. Can I force it to max somehow?
If its below like 100% the screen is off which happens on boot and I can only fix it using voice over. Thanks so much guys!!!!
 
Last edited:
Joined
Jul 14, 2019
Messages
71
Motherboard
Dell 7559
CPU
i7-6700HQ
Graphics
GTX 960M
Finally got Big Sur to run on my Dell 7559. The patched EDID method worked. It allows me to upgrade or Clean install to Big Sur!. Everything works as normal. Thanks so much @Heisenberg68 for bringing this to my attention. Who would have known. Ive run High Sierra, Mojave and Catalina on this laptop and have never needed my EDID patched. Big Sur will not boot without it being patched. My EFI is attached if it'll help anyone else.
Thats good. Can you check if you are able to get 60Hz refresh rate or 48 Hz?
You can check here:
 
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