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HP EliteBook 850 G2 w/Mojave 10.14.1 Black Screen on Wake.

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Hello,
I've tried everything and cannot solve the black screen on wake with my HP EliteBook 850 G2. If the screen sleeps by timer, closed lid or power button it wakes to a black screen. Hard reset is the only solution. When woken from sleep the screen backlight responds to brightness keys but no image is shown. The laptop works flawlessly on El Capitan which should rule out ay hardware issues. Any tips or insights are much appreciated. Problem reporting files attached including BIOS settings.
 

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RehabMan

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Hello,
I've tried everything and cannot solve the black screen on wake with my HP EliteBook 850 G2. If the screen sleeps by timer, closed lid or power button it wakes to a black screen. Hard reset is the only solution. When woken from sleep the screen backlight responds to brightness keys but no image is shown. The laptop works flawlessly on El Capitan which should rule out ay hardware issues. Any tips or insights are much appreciated. Problem reporting files attached including BIOS settings.
Did you try AptioMemoryFix-64.efi instead of OsxAptioFixDrv-64.efi?
Did you try injecting device-id=<26160000> on IGPU? (under PciRoot(0)/Pci(2,0) in config.plist/Devices/Properties)
Is your BIOS up-to-date?
Does an external monitor work after sleep?
Does closing the lid, then re-open the lid help?
Did you try connecting to the laptop after sleep with remote desktop?
 
Joined
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Messages
111
Motherboard
HP EliteBook 840 G3-Clover
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i7-6600U 2.60 Ghz
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Intel HD 520, 1920x1080
Mac
MacBook Pro
Mobile Phone
iOS
Hello and thanks for the quick feedback. I'm going to try each one of your suggestions. Do I need both folders drivers64 AND drivers64UEFI in my EFI Clover folder? I noticed ApfsDriverLoader-64.efi is in both and want to eliminate any bloat and redundant files while I'm looking for a fix to my main issue.
 

RehabMan

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Hello and thanks for the quick feedback. I'm going to try each one of your suggestions. Do I need both folders drivers64 AND drivers64UEFI in my EFI Clover folder? I noticed ApfsDriverLoader-64.efi is in both and want to eliminate any bloat and redundant files while I'm looking for a fix to my main issue.
drivers64 is for legacy boot.
drivers64UEFI is for UEFI boot.

Note: You might consider reading Clover documentation.
 
Joined
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Messages
111
Motherboard
HP EliteBook 840 G3-Clover
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i7-6600U 2.60 Ghz
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Intel HD 520, 1920x1080
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MacBook Pro
Mobile Phone
iOS
Hi Rehabman. None of the suggestions make a difference. Most of them we tried on the other main thread for your EliteBook guide. If I can target what changed with regards to the backlight between El Capitan and Mojave I think I can nip this in the bud and stick with Mojave. Do yo have any idea what Apple changed and did you have to change your code, kexts, patches to address those specific changes with the backlight?
 
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Sniki

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Hi Rehabman. None of the suggestions make a difference. Most of them we tried on the other main thread for your EliteBook guide. If I can target what changed with regards to the backlight between El Capitan and Mojave I think I can nip this in the bud and stick with Mojave. Do yo have any idea what Apple changed and did you have to change your code, kexts, patches to address those specific changes with the backlight?
Try injecting your native EDID or patched EDID.
config.plist /devices/Properties/
AAPL, override-no-connect and paste your edid
 

RehabMan

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If I can target what changed with regards to the backlight between El Capitan and Mojave
In post #1 you imply the problem is NOT backlight related.
 

RehabMan

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None of the suggestions make a difference.
You will need to provide details on each of my questions and evidence showing you did what was suggested.
 
Joined
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HP EliteBook 840 G3-Clover
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i7-6600U 2.60 Ghz
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Intel HD 520, 1920x1080
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MacBook Pro
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Try injecting your native EDID or patched EDID.
config.plist /devices/Properties/
AAPL, override-no-connect and paste your edid
Please see the attached image to see how I implemented your advice. Is this what you mean? The EDID is rather large. Do I paste the full string?
 

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Sniki

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Please see the attached image to see how I implemented your advice. Is this what you mean? The EDID is rather large. Do I paste the full string?
No it's wrong, it should be like this:
IGPU.png

i also added the other values according to your hardware, remove SSDT-IGPU.aml from EFI/Clover/ACPI/Patched and test if it changes something.
 
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