Laptop HDMI green screen to bad colors on integrated screen

[vomesk]

Hi. I've an MSI Prestige 15 laptop with Big sur and OpenCore 0.6.7 working almost good but i've an issue that i can't fix.

 

First I had green screen on an external monitor through HDMI that fixes after sleep and wake up or when i disable AppleALC.kext.

 

I've change device-id, make a new patch with hackintool and added agdpmod=vit9696. Now it works but i have bad colors and stripes on the integrated screen.

 

SMBIOS MacBookPro 16,3

CPU Intel Comet Lake i7-10710u

IGPU Intel Graphics UHD 630

DGPU Nvidia GTX1650 Max-Q (Disabled)

AudioRealtek ACL298

 

 

 

Edited March 17, 2021 by vomesk

[miliuco]

26 minutes ago, vomesk said:

Hi. I've an MSI Prestige 15 laptop with Big sur and OpenCore 0.6.7 working almost good but i've an issue that i can't fix. When i boot it i have green screen on an external monitor through HDMI, but it fixes after sleep and wake up. I've found that if i disable appleALC.kext it works so i think the problem comes from the HDMI audio signal (had). Any idea?...

You can try to replace hda-gfx property with No-hda-gfx, this usually fixes those failures  but the audio is lost through HDMI. Replace these 2 lines:

               <key>hda-gfx</key>
               <string>onboard-1</string>

for these other 2:

                <key>No-hda-gfx</key>
                <data>AAAAAAAAAAA=</data>

Try and comment.

[vomesk]

I would like to have HDMI audio. The thing is what changes after sleep that make it works.

[hardcorehenry]

In monitor settings make sure there is: Input Color Format>RGB not YPbPr.

Edited March 12, 2021 by hardcorehenry

[vomesk]

5 hours ago, hardcorehenry said:

In monitor settings make sure there is: Input Color Format>RGB not YPbPr.

 

In the monitor you mean? Mine hasn't that option, i'll check.

 

 

5 hours ago, Hervé said:

Take an IOReg extract (using IORegistryExplorer app) before and after sleep, then compare...

 

Where exactly? Audio? GPU?

ioreg.zip

[vomesk]

If I boot with AppleALC.kext disabled it works but i have no sound so that makes me think there is a conflict between HDMI audio and video signal, but in the other side that fixes after sleep so maybe something in power management. I have no idea.

[vomesk]

Can this be something? After wake up there is a new entry on framebuffer2/display0/apple display.

 

DevidePowerState 0x3

[vomesk]

Already try, i'm done with all weg args... No idea where to go now, maybe it has no fix.

[vomesk]

I've patched the framebuffer, changed device-id and add agdpmod=vit9696 and it works but i have strange colors and stripes on the integrated screen.

 

Edited March 17, 2021 by vomesk