Q11: If I do a NVRAM reset due to other reason, how to regain these functions?Ī: For Lilu method, repeat step 14 and reboot. FCPX, iMovie, Handbrake, Compressor, VideoProc, DVDFab, DV, AE, PP, FFMpeg, QuickTime Player, VLC, IINA.) So far, all my tested software works (e.g. Q10: Which software can benefit from this mod?Ī: This will provide hardware acceleration at system level. (Update: The answer is NO, thanks bazza5938 to perform the test) RX580) HEVC HWAccel support is removed by Apple (WhateverGreen should fix this Polaris supportability issue. Only Lilu method, or OpenCore method work. (update: users reported hardware decode works, but H264 hardware encode will cause the crash)Ī: Not as good as 10.14.6. But RX580 will cause GPURestart fault, which freeze the display and make the OS unusable. Smooth playback with very low CPU usage (please use a browser that support VP9 to watch all the following Youtube videos in 4k, otherwise, you may not able to read the details)Ī: One user reported that latest 10.13.6 with Vega also work with Lilu mehtod. This is how my cMP can play this video now.
But if there is any instability, please restore the original file from your backup.įor OpenCore 0.5.6 and later, you have to re-mount the EFI partition -> remove the BOOT and OC folder -> reset NVRAMĪ: Able to play some very demanding HEVC video (e.g. Once your system boot again, you can remove the kext / OpenCore.įor Hex edit method, I ran lots of tests, no way to crash the system. So, will effective revert your system back to the original state. Q4: If my system crash after the mod, how to fix it?Ī: For Lilu / OpenCore 0.5.5 method, NVRAM reset will remove the boot argument, and disable the kexts / OpenCore. At least, I have no way to reproduce any freeze with my RX580) (Update: 10.14.6 official release seems fixed most of these issue. Normal performance can only recover by reboot. Not system freeze / crash, but the video engine simply like stop working, perform extremely bad. Beside, Adobe Media Encoder seems will cause the video engine stall. However, Polaris GPU hwaccel seems perfectly stable in 10.14.6 beta by hex editing the AppleGVA file. 3rd party apps such as PP, DV, VideoProc are not affected. So far, all freeze only occur in Apple apps. It seems only Polaris GPU is affected e.g. Besides, few more users reported system freeze (in 10.14.5). And Netflix on Chromium base browsers (Chrome, Brave, Edge, etc) are OK.ĭRM streaming can work flawlessly with the OpenCore method.Ī: Photos app crash if HDMIAudio.kext is also installed. And only use Lilu + WhareverGreen, or hex edit method)Ī: Yes, for Lilu or hex edit method, iTunes, TV+, and Safari Netflix DRM streaming may not work, but fully download DRM movie should not be affected. So, if you want to stay safe, avoid OpenCore. ( Update: OpenCore may write something into the cMP's firmware. I won’t answer anything that already covered in this section.Ī: Tested since 10.14.5 beta 4, so far, no system damaged by this mod. Sudo nvram boot-args="shikigva=96 shiki-id=Mac-7BA5B2D9E42DDD94"For Catalina, you may need to enter the no compat check boot argument as well, otherwise, you may stuck at the no boot situation until you fix the boot argument in recovery partition.įAQ, please read through this section BEFORE you ask.