- Joined
- Jan 22, 2019
- Messages
- 100
- Motherboard
- Thinkpad T470p-Clover
- CPU
- i7-7700HQ
- Graphics
- HD 630, 2560 x 1440
https://www.tonymacx86.com/threads/intel-uhd-620-graphics.236987/page-2 take a look here.
So I was briefly fortunate yesterday, by setting AAPL,ig-platform-id in Properties to 0x591B0000. But it was very unstable.
Also, I had to enable and disable: framebuffer-con1-flags, framebuffer-con1-pipe, framebuffer-con1-type in a certain order before finally enabling: framebuffer-con1-enable and framebuffer-con1-alldata and setting it to:
Code:01050A00 00080000 87010000 02040A00 00080000 87010000 FF000000 01000000 20000000
Hotplugging would result in KP and restart.
Today, I switched to VirtualSMC and helper SMCplugins and I am using the vsmcgen=1 and lilucpu=9 boot arguments
Now I am not getting even the video signal on HDMI, let alone audio.
If @RehabMan chooses to advise me, I would attach the new PR files.
Anyone who had success in enabling HDMI with audio for the UHD 620 is equally welcome.
Thanks @RehabMan .
I am not able to get HDMI audio on my TV.
- I get HDMI audio sporadically with my current settings and (PR files attached.) only when I boot with the HDMI cable connected to the TV. If I hotplug, there is no HDMI audio.
- If I lose HDMI audio, even after booting with the cable connected, I make some random changes in the framebuffer-con1* values (enable and disable the keys) and finally restore it exactly back to where I started from. This exercise sometimes restores the HDMI audio, if I boot with the cable connected again, but definitely not if I hotplug.
- The connector type for AppleIntelFrameBuffer@1 does not change to 00 08 00 00 and it's stuck at 00 04 00 00 regardless of the cable is connected or not. Also, there is no HDMI shown in System Preferences>Sound>Output even though I am able to get the video output on the TV.
One more thing is that there used to be a pink tint on the TV, which I worked around by using the "patch-edid.rb" script. I never faced this in High Sierra.
I have tried other SMBIOS models also, such as the MacBook Pro 14,1 and 14,2.
HDMI audio works in Windows. Also previously it worked using the "0x591b0000, 0105 instead of 0204, HDMI" patch, in "KextsToPatch".
PR files generated after booting with HDMI cable connected, otherwise it wont show in IORegistryExplorer.
I thought that HDMI should show up as an permanent option in: About my Mac -> Audio
As you see it and have it selected: