renegaid Posted October 22, 2019 Share Posted October 22, 2019 Can anyone help me setup the RX 590 on Catalina? My friend did all of the work since I am not familiar with the process. There is a file SSDT-PEG0.aml that doesn't seem to work as it should. It worked in High Sierra but for some reason it doesn't work in Catalina. I have no idea what needs to be done to fix it. Any help will be appreciated.Asrock Z270 Killer Sli/ACi7 7700KPowercolor RX 590 iMac.zip Link to comment Share on other sites More sharing options...
Allan Posted October 22, 2019 Share Posted October 22, 2019 It's not necessary to use/create a SSDT for your video. Just use WEG+Lilu (last updates) and done! Link to comment Share on other sites More sharing options...
loganMac Posted October 23, 2019 Share Posted October 23, 2019 (edited) What I read from here, PowerColour and XFX had issues. Quote The only brand of GPU you should avoid with the Polaris series would be XFX and PowerColour as many users have had issues with these cards with viewing Clover and macOS booting but other users have found fixes/workarounds(though nothing consistent). This seems to be caused by having an odd VBIOS that doesn't communicate well with macOS and the only real solution is flashing another VBIOS which is not ideal for most users. Maybe try this might work: https://www.techpowerup.com/vgabios/?architecture=AMD&manufacturer=Powercolor&model=RX+590&version=&interface=&memType=&memSize=&since= There are 3 PowerColour. Try one at a time if it works. 1) Download the vbios, unzip and rename to 1002_67DF.rom 2) Put 1002_67DF.rom in EFI/CLOVER/ROM 3) In Clover, check Inject ATI and select Load VBIOS 4) Reboot Edited October 23, 2019 by loganMac Link to comment Share on other sites More sharing options...
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