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Idhor

No HDMI / DP audio devices on UHD 630

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Hi all,

this is my first post, I've done some hackintosh in the past and now I'm giving it another try by using OpenCore with an iGPU only build on a MSI Z490 Tomahawk motherboard + i7 10700k (Comet Lake).

 

I was able to get everything working with Lilu + WEG + AppleALC and framebuffer 0x3E9B0007

 

I've had some minor headcaches on:

  • no GPU acceleration (chrome hanging and everything disabled on chrome://gpu): I've discovered that it was trying to use a Kaby Lake driver and I've solved it by spoofing a device-id of a Coffee Lake CPU (0x3E9B)
  • no video output on HDMI port (DisplayPort working out of the box): solved by changing the bus id to 0x01
  • onboard audio: layout-id=11, doesn't work after a reboot from Windows


The only thing that I'm unable to get it working is the audio over DisplayPort / HDMI. 

I don't see the devices on the output list but if I connect BOTH ports they both appear as sound devices and they work!

Doesn't matter if I boot the system over HDMI or over DisplayPort, to be able to use the audio devices I need to connect both ports to working monitors...

 

I've attached an IOReg booting with only DP and another IOReg after the HDMI cable is also plugged in (a new codec device appears under HDEF / HDA controller).

 

Suggestions?

 

configplist-devices.thumb.jpg.09f3ed4050b9ffb0e624c0da8ba81436.jpg

ioreg.zip

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On 11/15/2020 at 5:29 PM, Idhor said:

Hi all,

this is my first post, I've done some hackintosh in the past and now I'm giving it another try by using OpenCore with an iGPU only build on a MSI Z490 Tomahawk motherboard + i7 10700k (Comet Lake).

 

I was able to get everything working with Lilu + WEG + AppleALC and framebuffer 0x3E9B0007

 

I've had some minor headcaches on:

  • no GPU acceleration (chrome hanging and everything disabled on chrome://gpu): I've discovered that it was trying to use a Kaby Lake driver and I've solved it by spoofing a device-id of a Coffee Lake CPU (0x3E9B)
  • no video output on HDMI port (DisplayPort working out of the box): solved by changing the bus id to 0x01
  • onboard audio: layout-id=11, doesn't work after a reboot from Windows


The only thing that I'm unable to get it working is the audio over DisplayPort / HDMI. 

I don't see the devices on the output list but if I connect BOTH ports they both appear as sound devices and they work!

Doesn't matter if I boot the system over HDMI or over DisplayPort, to be able to use the audio devices I need to connect both ports to working monitors...

 

I've attached an IOReg booting with only DP and another IOReg after the HDMI cable is also plugged in (a new codec device appears under HDEF / HDA controller).

 

Suggestions?

 

configplist-devices.thumb.jpg.09f3ed4050b9ffb0e624c0da8ba81436.jpg

ioreg.zip

I have the same issue with UHD630 on cometlake. I get the HDMI/DP audio only when both are connected. Did you get to solve this issue?

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