elkos Posted October 18, 2019 Share Posted October 18, 2019 Hello After successful installation of Catalina the system starts only one out of 20 times I try. Most of the times it hangs (maybe) at AppleUSBHostCompositeDevice.kext, but it might be also the Window server. I am attaching two screenshots - with and without kext debug enabled, the relevant part of my Clover folder, as well as a dump of IORegistryExplorer under High Sierra. Please make some suggestions how to investigate further even if you don't have a solution. Thanks in advance! iMac Pro Registry.ioreg CLOVER.zip Link to comment Share on other sites More sharing options...
HBP Posted October 18, 2019 Share Posted October 18, 2019 run this command and see if it improves. sudo kextcache -invalidate / that will cause the system to forcefully rebuild your kernel cache. when it is complete (20 sec-2 min later). restart and see if the problem is resolved. HBP Link to comment Share on other sites More sharing options...
elkos Posted October 18, 2019 Author Share Posted October 18, 2019 (edited) Thank you for the suggestion but I can’t boot anymore How could I rebuild the kext cache from the High Sierra installation? Edited October 18, 2019 by elkos Link to comment Share on other sites More sharing options...
elkos Posted October 18, 2019 Author Share Posted October 18, 2019 Update: the Vega graphics shouldn't be the culprit as single user mode doesn't boot either ... Link to comment Share on other sites More sharing options...
elkos Posted October 25, 2019 Author Share Posted October 25, 2019 Now I tracked down WHEN this happens: after each and every plain reboot Catalina hangs searching for a root device. However, if I switch OFF and start, the system boots without problems!! And yes, I have a SSDT-EC.aml with a fake EC device which gets loaded correctly. So the question is: which information passed to the kernel is different between a cold start and a reboot? Link to comment Share on other sites More sharing options...
xtraa Posted November 6, 2019 Share Posted November 6, 2019 (edited) What drivers do you use in your drivers64UEFI Folder? Do you have an AMI UEFI? Here I found something regarding ACPIEC: https://medium.com/@ayushere/common-problems-and-workarounds-in-hackintosh-85d76ad89d24 Edited November 6, 2019 by xtraa Link to comment Share on other sites More sharing options...
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