Some display connections are not working after the colour banding fix

[darthsian]

macOS Version

Ventura

What is your CPU's model?

AMD Ryzen 7 5700U

Please describe the behaviour in detail.

With the last commit (da6376b), the monitor connected via HDMI is not working. DisplayPort works fine.

What should've happened instead?

The monitor via HDMI should work.

If applicable, attach the .gpuRestart, .panic, etc file related to this issue.

No response

[darthsian]

The last commit where HDMI works without problems is 0c15616.

[VisualEhrmanntraut]

sudo rm /var/db/.com.apple.iokit.graphics

see if the issue persists, if yes, provide an AGDCDiagnose log using

sudo /System/Library/Extensions/AppleGraphicsControl.kext/Contents/MacOS/AGDCDiagnose

and send it over here

[darthsian]

"sudo rm /var/db/.com.apple.iokit.graphics" didn't help so im sending a AGDCDiagnose log. AGDCDiagnose.txt

[VisualEhrmanntraut]

AGDP printed no frame buffers which means it does not like your configuration, switch to a different SMBIOS

[darthsian]

I use iMac20,1 on all AMD Mini PCs and there has been no problem so far. Why has it worked without problems until now?

[VisualEhrmanntraut]

The getVendorInfo patch was broken until now, making AGDC think this is a dedicated GPU.

[darthsian]

Does it help if I send you the AGDCDiagnose log with commit 0c15616 where it still works?

[darthsian]

The getVendorInfo patch was broken until now, making AGDC think this is a dedicated GPU.

Hmm, so what SMBIOS should we be using now if not iMac20,1? The iMacPro1,1 only has dedicated GPU...

[VisualEhrmanntraut]

Try MacBookPro16,3.

[darthsian]

Try MacBookPro16,3.

So, it doesn't strike me as a good idea to use a SMBIOS of laptop for a desktop.

[VisualEhrmanntraut]

mini PCs don't really strike me as AIOs either :^)

[techmare]

bruh ur mini pc literally have a laptop cpu 💀💀

[techmare]

literally a laptop motherboard shrunken in size

[darthsian]

Try MacBookPro16,3.

Ok, so on the MacBookPro16,3 HDMI also unfortunately does not work :-/

[VisualEhrmanntraut]

That's weird.

[darthsian]

Isn't this a similar problem to the Hackintosh with AMD dedicated GPU where you have to use agdpmod=pikera boot argument with newer GPUs, otherwise the computer boots to a black screen?

[VisualEhrmanntraut]

this patch is already in place, along with another for making AGDP continue if there's only one FB

[darthsian]

I have Trigkey Mini PC with 5700U and Beelink Mini PC with 5800H and both have same problem with HDMI.

[darthsian]

this patch is already in place, along with another for making AGDP continue if there's only one FB

Look like we need some new agdpmod patch...

[SalmonPete]

I'm experiencing the same issue over HDMI on my 4700G Desktop, 14.4.1, iMac20,2, commit 2cf2ad6.

[VisualEhrmanntraut]

I have removed the patch at fault. Sorry for the inconvenience, I hate AGDP.

[SalmonPete]

Commit [e450df1] is still not detecting HDMI. [0c15616] is working great.

[VisualEhrmanntraut]

what

[VisualEhrmanntraut]

I reverted the problematic commit, and will reintroduce the fix properly once I fully understand what I'm supposed to do