gabby Posted July 9, 2020 Share Posted July 9, 2020 Slow boot on Catalina, stop for 40 seconds and then this error. AGDCC: Unauthorized client 'PerfPowerService' (IOService:/AppleACPIPlatformExpert/PC10@0/AppleACPIPCI/PEG1@0/IOPP/GFX0@0/AMD9500ControllerWrangler) Link to comment Share on other sites More sharing options...
jeffer1312 Posted August 3, 2020 Share Posted August 3, 2020 On 7/9/2020 at 8:50 AM, gabby said: Slow boot on Catalina, stop for 40 seconds and then this error. AGDCC: Unauthorized client 'PerfPowerService' (IOService:/AppleACPIPlatformExpert/PC10@0/AppleACPIPCI/PEG1@0/IOPP/GFX0@0/AMD9500ControllerWrangler) I have the same problem, did you solve it? Link to comment Share on other sites More sharing options...
hardcorehenry Posted April 14 Share Posted April 14 (edited) agdc_entitle=1 boot arg fixes “AGDCC: Unauthorized client 'PerfPowerService’” message, but I’m not sure if it’s safe for hackintosh, can’t find any info on Insanelymac or MacRumors forum. Anyone have a clue? Edited April 14 by hardcorehenry Link to comment Share on other sites More sharing options...
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