ssprod Posted September 1, 2020 Share Posted September 1, 2020 Greetings... System is running ok with Catalina 10.15.5 with the exception of the odd annoying graphics related issues, notably, when launching iTunes, my cloud library freezes the system, graphics artifacts, flashing, etc forces me to shut the system down. This behaviour also happens randomly when I access various webpages, unpredictably. Any explanation, or assistance with this annoyance would be most appreciated. Thank you. Dell Optiplex 3020 i3-4160 HD4400 8GB EFI.zip Link to comment Share on other sites More sharing options...
Administrators Hervé Posted September 1, 2020 Administrators Share Posted September 1, 2020 Looking at your Clover config, I'd say you've got no proper CPU power management in place and your graphics settings may be incorrect too. Open your Clover config in Clover Configurator app and try the following in ACPI tab: add GFX0 to IGPU patch remove the SSDT table drops you applied remove NoOEMTableId + NoDynamicExtract SSDT options remove FixIntelGfx fix add PluginType generate option With regards to SMBIOS: iMac14,1 used Haswell Iris Pro 5200 iGPU iMac14,2 and iMac14,3 used nVidia Kepler dGPUs iMac14,4 and Macmini7,1 used Haswell HD5000 iGPU iMac15,1 used AMD dGPU As such: change your SMBIOS to iMac14,4 or Macmini7,1 Save your revised config in a separate file that you'll call from Clover Options->Config menu once you reach Clover's main boot screen. Link to comment Share on other sites More sharing options...
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