Radeon RX 4XX/5XX standalone system, AMDRadeonX4250.kext (GVA support H264) does not support HEVC HW

[justinhe]

update:

with dummykext141, macOS 10.14.4, using imacpro1,1 board-id, encoding and decoding worked great on RX 560, but i got very high fan speed after watching videos for a while, and the fan makes quit a lot of noise. this never happened before. I'll try to disable dummykext141 to see what is the real cause of this problem.

update:

Removed dummykext141 and shikigva boot args, playing 3 online streaming videos at the same time , no high fan speed. i guess dummykext141 needs modification. i'll take a look how to do that.

 

[justinhe]

update:

Removed dummykext141 and shikigva boot args, playing 3 online streaming videos at the same time , no high fan speed. i guess dummykext141 needs modification. i'll take a look how to do that.

Update to below update: this fan speed problem still exists, it happens when doing GPU works after wake from sleep.

Update again:

I created a new dummy kext for macOS 10.14.4, see attached dummy144.kext.zip, fixed high fan speed problem.

Again, i tested with 3 online video streaming, plus a local movie playing with mpv, all at the same time, and keep fast fowarding backwarding the movie using right and left arrow keyboard key, GPU shows utilization 100%, power 78W, temp 65 degree, still no high fanspeed problem.

If you are interested, here is the instructions to create the dummy144.kext:

1. create a folder 'dummy144'
2. copy '/System/Library/Extensions/AMDRadeonX4000.kext/Contents/Info.plist' to 'dummy144'
3. edit 'dummy144/Info.plist' with PlistEditPro.app
4. append a # to 'Executable file' so that it will seek 'AMDRadeonX4000' from system instead of from the folder 'dummy144'
5. change the value of 'Get Info string' 'Bundle identifier' 'Bundle name' to whatever you want.
6. Add 'IOGVAHEVCDecode 1' 'IOGVAHEVCEncode 1' 'IOGVAVTCapabilities' 'IOGVACodec AMDU6V3' to 'AMDBaffin' and 'AMDEllesmere' under 'IOKitPersonalities'
7. make everything else untouched, save the Info.plist, rename dummy144 to dummy144.kext
8. copy dummy144.kext to Clover/kexts/other/
9. add boot args: shiki-id=Mac-7BA5B2D9E42DDD94 shikigva=32 to Clover/config.plist

 

[shuhung]

i guess dummykext141 needs modification. i'll take a look how to do that.

Dummy141 kext just use AppleUSBHostMergeProperties function append 'IOGVAHEVCDecode 1' 'IOGVAHEVCEncode 1' 'IOGVAVTCapabilities' 'IOGVACodec AMDU6V3' to AMDRadeonX4000_AMDBaffinGraphicsAccelerator and AMDRadeonX4000_AMDEllesmereGraphicsAccelerator, do nothing about fan speed.

Both methods should be same, old override injection method may need change frequently but dummy141 (append method) not.

 

[justinhe]

Dummy141 kext just use AppleUSBHostMergeProperties function append 'IOGVAHEVCDecode 1' 'IOGVAHEVCEncode 1' 'IOGVAVTCapabilities' 'IOGVACodec AMDU6V3' to AMDRadeonX4000_AMDBaffinGraphicsAccelerator and AMDRadeonX4000_AMDEllesmereGraphicsAccelerator, do nothing about fan speed.

Both methods should be same, old override injection method may need change frequently but dummy141 (append method) not.

thanks for the info. I found that this fan speed problem still exist, it happens when doing GPU works after wake from sleep. I'll do more test.

 

[shuhung]

thanks for the info. I found that this fan speed problem still exist, it happens when doing GPU works after wake from sleep. I'll do more test.

Depended on VBIOS and FB kext, try create a dummy kext, add Acre powerplay properties (CFG_PTPL2_TBL) to your dummy kext.

edit: dummy FB kext sample

 

[justinhe]

Depended on VBIOS and FB kext, try create a dummy kext, add Acre powerplay properties (CFG_PTPL2_TBL) to your dummy kext.
View attachment 382579

edit: dummy FB kext sample

Can I add these to Dummy141.kext? if not ,what would this acre dummy kext look like, can you show me a sample?

 

[shuhung]

My problem is I have changed smbios to iMacPro1.1 and opencl geekbench score about 138.000, but with smbios MacPro6.1 use “shikigva=32 shiki-id=7BA5B2D9E42DDD94” only 98.000 points.

Your dummy kext is outdate, it base on swap ID method, try dummy141 kext, should help.

Now with smbios iMacPro1.1 boot macOS but not works keyboard and mouse, but clock and istat show progress and run. I think crash something graphics because the last app that I have used was BruceX with Final Cut Pro X. Only works my clover with smbios MacPro6.1, with others smbios boot perfectly but not works keyboard and mouse.

My ASUS and Asrock mobos also have this issue, due to some ACPI code are missing on usb ssdt table, correct ACPI code then all usb ports work with new SMBIOS like iMacPro1,1.

 

[shuhung]

Can I add these to Dummy141.kext? if not ,what would this acre dummy kext look like, can you show me a sample?

Yes, just copy Controller dictionary from previous attached kext sample to dummy141 IOKitPersonalities dictionary.

 

[justinhe]

Yes, just copy Controller dictionary from previous attached kext sample to dummy141 IOKitPersonalities dictionary.

still the same high fanspeed after wake from sleep，where did you get the data of CFG_PTPL2_TBL?

 

[shuhung]

still the same high fanspeed after wake from sleep，where did you get the data of CFG_PTPL2_TBL?

From AMD9500Controller.kext, my MSI RX460 2G OC also have this issue, add Acre FB data may reduce fan noise after GPU high load but don't fully fix this issue, flashed and tested many OC version VBIOS from other GPU vendors, same issue, finally flashed PowerColor RX560 VBIOS (lower PState) fix this issue, seems to be common issue for OC Edition