New DRM enabling method for systems with AMD GPU

[Douirc]

A little help please. I added shikigva=32 and shiki-id=Mac-7BA5B2D9E42DDD94 to my boot arg and Apple TV+ playback is working great, but...only on my HDMI monitor. If I try dragging it to the DP monitor, the content goes black and I get a DRM message. Any workarounds? My DisplayPort is my main and preferred monitor. Thanks!

 

[phonic2k]

I've switch to OC 0.6.3 for Big Sur, I feel your pain with this one. No matter the settings(shikigva, AAPL,platform-id,etc) it makes no difference in Big Sur. Even with the wrong settings in Catalina AppleTV App would play downloaded content, but not the case in Big Sur.

The only working option I've found is switching SMBIOS to MacPro7,1, but the negatives massively outweigh the benefit of having AppleTV and Netflix in Safari compared to using SMBIOS iMac19,2 for a fully compatible working system with all the continuity features and stability it brings.

 

[phonic2k]

I've switch to OC 0.6.3 for Big Sur, I feel your pain with this one. No matter the settings(shikigva, AAPL,platform-id,etc) it makes no difference in Big Sur. Even with the wrong settings in Catalina AppleTV App would play downloaded content, but not the case in Big Sur.

The only working option I've found is switching SMBIOS to MacPro7,1, but the negatives massively outweigh the benefit of having AppleTV and Netflix in Safari compared to using SMBIOS iMac19,2 for a fully compatible working system with all the continuity features and stability it brings.

they say "persistence is the key to success"... Managed to sort the DRM issues out on AppleTV streaming and downloaded content, but Netflix/Amazon PrimeVideo only works via Chrome. You could say it's a useable fix. However, the computer takes much longer to load, so things are not 100% correct, and will need to check the logs to see what's stalling and find a fix before I post my findings. I'm getting there!

 

[WizMeister]

DRM is unresolved on iMac SMBIOS due to broken user space patching for Big Sur on Lilu, resulting on shiki currently being useless. Acidanthera developer states that it might not get fixed at all but will have a look after they update to Big Sur on their personal build. Let's play the waiting game until a verdict is out.

 

[phonic2k]

DRM is unresolved on iMac SMBIOS due to broken user space patching for Big Sur on Lilu, resulting on shiki currently being useless. Acidanthera developer states that it might not get fixed at all but will have a look after they update to Big Sur on their personal build. Let's play the waiting game until a verdict is out.

I've noticed from my own research Shiki does nothing anymore.
However, I've managed to get a stable setup with AppleTV working for streamed and downloaded content without shiki settings, but you need to use Chrome for online content like Netflix,etc.

 

[WizMeister]

I've noticed from my own research Shiki does nothing anymore.
However, I've managed to get a stable setup with AppleTV working for streamed and downloaded content without shiki settings, but you need to use Chrome for online content like Netflix,etc.

How did you manage to fix Apple TV without changing to iMacPro or MacPro SMBIOS?

 

[tech1eguy]

This is the easiest method I found in Big Sur with imac smbios for drm. Add -igfxvesa to bootargs with WEG. igpu will be disabled and appletv, drm etc. works fine. If you need igpu for sidecar etc., remove and reboot. I get about additional 10 secs black screen during boot though with this -igfxvesa.

 

[LisaAlterEgo]

This is the easiest method I found in Big Sur with imac smbios for drm. Add -igfxvesa to bootargs with WEG. igpu will be disabled and appletv, drm etc. works fine. If you need igpu for sidecar etc., remove and reboot. I get about additional 10 secs black screen during boot though with this -igfxvesa.

I gave it a try and it didn't work for me. When my IGPU is enabled with -igfxvesa
as a boot argument, WEG configures it using an Nvidia framebuffer instead of the
usual Intel Capri framebuffer for my 3rd generation CPU. I tried with an HP 8300
configured as a MacPro6,1 in Big Sur, and an HP 8300 configured as an iMacPro1,1
in Big Sur. I tried with IGPU off or on, secondary or primary in BIOS, headless or
undefined.

Do you define your IGPU in device properties? Which iMac SMBIOS are you using?

 

[tech1eguy]

I gave it a try and it didn't work for me. When my IGPU is enabled with -igfxvesa
as a boot argument, WEG configures it using an Nvidia framebuffer instead of the
usual Intel Capri framebuffer for my 3rd generation CPU. I tried with an HP 8300
configured as a MacPro6,1 in Big Sur, and an HP 8300 configured as an iMacPro1,1
in Big Sur. I tried with IGPU off or on, secondary or primary in BIOS, headless or
undefined.

Do you define your IGPU in device properties? Which iMac SMBIOS are you using?

-igfxvesa disables the intel acceleration. So you have to push amd dgpu profile. I use the attached kext.

This is what I use.
Smbios - imac19,1
Bios - igpu enabled
igpu properties - headless platform id
Kexts - WEG (no shikigva), AMDRadeonpro
Everything works except drm

For drm, add -igfxvesa to boot arg and reboot.

 

[phonic2k]

How did you manage to fix Apple TV without changing to iMacPro or MacPro SMBIOS?

Yes, I'm using SMBIOS 19,2 and OC 0.6.3. Here are the slimmed down settings to get AppleTV working:
iGPU PciRoot(0x0)/Pci(0x2,0x0) AAPL,ig-platform-id 03001259
dGPU PciRoot(0x0)/Pci(0x1,0x0)/Pci(0x0,0x0) AAPL,slot-name [email protected],1,0/0,0
BIOS iGPU memory assigned 256mb, but iGPU multi monitor disabled in bios.

You will still need to use Chrome for online content, and 4k in youtube appears to be not as smooth(maybe a bug in Safari). Anyway, that's about as streamlined I've got it, but it adds boot time. Can't see any errors in the logs, but clearly a 14 second delay. A work in progress. Hope this helps.