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[GUIDE] HP Elitebook 8470p Radeon - Big Sur 11.2.3(11.4) | OpenCore

Feartech

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Asus N752VX-OpenCore
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Hi Dave11,
Thank you for your time.
Yes I've created my own SSDT-PM and haven't done any changes.
I played with ResXtreme but still same issue. Also what's weird, when I plug in VGA Monitor colors works great in 2nd monitor, but not in main Display...
I'm using MacBookPro10,2 as SMBIOS - Big Sur 11.6. Maybe I should go back to 11.2.3.
View attachment 529543
vga hasn't been supported on macs for well over 10 years....
 
Joined
Feb 9, 2017
Messages
92
Motherboard
HP Elitebook 8470p
CPU
Intel Core i7-3740QM
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AMD Radeon HD 7570m 1GB
Mobile Phone
  1. iOS
Hi DaveJ1, thank for your advice. Could you check my IOreg file and give me some advices? That is all information when I finished install High Sierra with your pre-efi ( I only adjusted wifi and bluetooth by itlw kext + heliport app).
But I saw that "unsupport CPU" when booting.
BRG!
I haven't tested OC on HS. For HS i recommend Clover. Do you want HS instead of Big Sur?
Try one more time with Big Sur 11.2.3 and follow #84.
What Combo Wifi card are you using?
 
Last edited:
Joined
Feb 9, 2017
Messages
92
Motherboard
HP Elitebook 8470p
CPU
Intel Core i7-3740QM
Graphics
AMD Radeon HD 7570m 1GB
Mobile Phone
  1. iOS
Hi Dave11,
Thank you for your time.
Yes I've created my own SSDT-PM and haven't done any changes.
I played with ResXtreme but still same issue. Also what's weird, when I plug in VGA Monitor colors works great in 2nd monitor, but not in main Display...
I'm using MacBookPro10,2 as SMBIOS - Big Sur 11.6. Maybe I should go back to 11.2.3.

This is from my screenshot(colors are strobbing, as here it shows clear. didn't have my phone to take a picture straight from display).
View attachment 529543
When you first connecting an external monitor you get distorted colors and maybe freeze. Restart and usually works.
i still haven't tried vga port and Feartech has a point.

So, what's the issue after that? SMBIOS and System Report look right, the dock is white. QE/CI?

On 11.6 do you have backlight control?
 

Feartech

Moderator
Joined
Aug 3, 2013
Messages
24,215
Motherboard
Asus N752VX-OpenCore
CPU
i7-6700HQ / HM170
Graphics
HD 530 1920 x 1080
Mac
  1. iMac
Mobile Phone
  1. iOS
I haven't tested OC on HS. For HS i recommend Clover. Do you want HS instead Big Sur?
Try one more time with Big Sur 11.2.3 and follow #84.
What Combo Wifi card are you using?
Opencore can work with high sierra :)
 
Joined
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Messages
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Motherboard
HP Elitebook 8570p
CPU
Intel Core i7-3610QM
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AMD Radeon HD 7570M
When you first connecting an external monitor you get distorted colors and maybe freeze. Restart and usually works.
i still haven't tried vga port and Feartech has a point.

So, what's the issue after that? SMBIOS and System Report look right, the dock is white. QE/CI?

On 11.6 do you have backlight control?
The issue is that i have only one GPU(dGPU at this laptop) and i get color strobbing. I can't use it properly as screen its a mess.
No, backlight control doesn't work in 11.6, same for 11.5(i've tested it).

###Edit - I re-tested on this weekend, backlight control works after installing Legacy Patches on Big Sur 11.5 & 11.6. Must have missed something previously.
 
Last edited:

Feartech

Moderator
Joined
Aug 3, 2013
Messages
24,215
Motherboard
Asus N752VX-OpenCore
CPU
i7-6700HQ / HM170
Graphics
HD 530 1920 x 1080
Mac
  1. iMac
Mobile Phone
  1. iOS
The issue is that i have only one GPU(dGPU at this laptop) and i get color strobbing. I can't use it properly as screen its a mess.
No, backlight control doesn't work in 11.6, same for 11.5(i've tested it).
does your laptop also have intel graphics?
 
Joined
Feb 9, 2017
Messages
92
Motherboard
HP Elitebook 8470p
CPU
Intel Core i7-3740QM
Graphics
AMD Radeon HD 7570m 1GB
Mobile Phone
  1. iOS
The issue is that i have only one GPU(dGPU at this laptop) and i get color strobbing. I can't use it properly as screen its a mess.
No, backlight control doesn't work in 11.6, same for 11.5(i've tested it).
On the picture i see 10bit too. Try the other 8bits.
 
Joined
Feb 9, 2017
Messages
92
Motherboard
HP Elitebook 8470p
CPU
Intel Core i7-3740QM
Graphics
AMD Radeon HD 7570m 1GB
Mobile Phone
  1. iOS
does your laptop also have intel graphics?
Bios Locked. It was configurable in the early times, not anymore. One or the other, not both.
 

Feartech

Moderator
Joined
Aug 3, 2013
Messages
24,215
Motherboard
Asus N752VX-OpenCore
CPU
i7-6700HQ / HM170
Graphics
HD 530 1920 x 1080
Mac
  1. iMac
Mobile Phone
  1. iOS
Bios Locked. It was configurable in the early times, not anymore. One or the other, not both.
ahh ok, as i didn't think brightness worked on non intel graphics....
 
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