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Artifacts after wake since High Sierra upgrade - HD 520

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stevenhe

stevenhe

Joined
Feb 3, 2012
Messages
20
Motherboard
HP Envy 15-as000nd
CPU
i5 6200u
Graphics
HD 520, 1920x1080
I just upgraded to High Sierra by running the installer from Sierra.
Everything still seems to work the same except for the following. After waking the laptop from sleep the screen is filled with artifacts and unusable (see picture).

I don't know where to start with this problem, as everything should be working fine.

9156ad170a14664d.jpg
 

Attachments

  • Reporting files.zip
    2.4 MB · Views: 62
stevenhe said:
I just upgraded to High Sierra by running the installer from Sierra.
Everything still seems to work the same except for the following. After waking the laptop from sleep the screen is filled with artifacts and unusable (see picture).

I don't know where to start with this problem, as everything should be working fine.

View attachment 285698
Click to expand...

Try different ig-platform-id. Perhaps 0x191b0000.
 
I've tried, but unfortunately it didn't work. I also tried all the other ig-platform-id's suggested by Clover Configurator for Skylake Mobile. They either produce the same artifacts or the screen doesn't wake at all.

Any other idea?
 
That's weird. It works correctly. I'll try to fix it though and report back.
 
With working correctly I meant the fact that the backlight is on and I can change the brightness. I'm going to put the fix in now as described in the linked topic.
 
stevenhe said:
With working correctly I meant the fact that the backlight is on and I can change the brightness. I'm going to put the fix in now as described in the linked topic.
Click to expand...

You currently do not have full range (due to lack of profile in AppleBacklight.kext, provided by AppleBacklightInjector.kext).
And brightness levels likely differ between pre-sleep/post-sleep (due to lack of correct PWM init, provided by SSDT-PNLF.aml).
 
I've now implemented backlight according to the guide (and changing the GFX to IGPU in the process). However, unfortunately the artefacts still happen after wake. New problem reporting files attached.
 

Attachments

  • Reporting files.zip
    2.4 MB · Views: 54
stevenhe said:
I've now implemented backlight according to the guide (and changing the GFX to IGPU in the process). However, unfortunately the artefacts still happen after wake. New problem reporting files attached.
Click to expand...

Backlight control is not implemented correctly.
As per guide, there must be no other "PNLF" (aka. "Backlight Fix" patches) in any DSDT/SSDT.
You have PNLF in DSDT.aml that lacks the correct code.
Remove the patch and use only SSDT-PNLF.aml.
Read the guide carefully.
 
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