marco.pisellonio80 Posted February 14, 2015 Share Posted February 14, 2015 Hi all. In my desktop in signature USB3 didn't work, so I installed the last GenericUSBXHCI.kext by Rehabman, adding the flag -gux_no_idle in ocbp. They work, but often USB3 device is not recognized, so I have to unplug and plug it again until it's seen. Sometimes I have to do this more times, and the only way is to boot with USB3 device plugged in, in that case the OS boot and recognize the usb3 device. Any idea? Have I to downgrade to Mavericks, where all was right? Link to comment https://www.insanelymac.com/forum/topic/304555-solved-usb3-often-dont-work-in-yosemite/ Share on other sites More sharing options...
Allan Posted February 14, 2015 Share Posted February 14, 2015 Try this version: GenericUSBXHCI.kext.zip And add this boot arguments: -gux_defer_usb2 -gux_no_idle kext-dev-mode=1 About downgrade, i recommend you make a fresh install. But try what I said up before. Link to comment https://www.insanelymac.com/forum/topic/304555-solved-usb3-often-dont-work-in-yosemite/#findComment-2111729 Share on other sites More sharing options...
marco.pisellonio80 Posted February 15, 2015 Author Share Posted February 15, 2015 Thank you Allan, I'll try and inform 1 Link to comment https://www.insanelymac.com/forum/topic/304555-solved-usb3-often-dont-work-in-yosemite/#findComment-2111841 Share on other sites More sharing options...
vusun123 Posted February 15, 2015 Share Posted February 15, 2015 The last resort is to patch the AppleUSBXHCI for native support. That way no more unstable USB 3.0 Link to comment https://www.insanelymac.com/forum/topic/304555-solved-usb3-often-dont-work-in-yosemite/#findComment-2111848 Share on other sites More sharing options...
marco.pisellonio80 Posted February 15, 2015 Author Share Posted February 15, 2015 Generic kext with flags doesn't work. I solved installing patched AppleUSBXHCI, here: http://www.insanelymac.com/forum/files/file/150-patched-appleusbxhci/ Thank you all for your help Bye Link to comment https://www.insanelymac.com/forum/topic/304555-solved-usb3-often-dont-work-in-yosemite/#findComment-2111955 Share on other sites More sharing options...
Allan Posted February 15, 2015 Share Posted February 15, 2015 You made this in your Desktop or Laptop? Link to comment https://www.insanelymac.com/forum/topic/304555-solved-usb3-often-dont-work-in-yosemite/#findComment-2111957 Share on other sites More sharing options...
marco.pisellonio80 Posted February 15, 2015 Author Share Posted February 15, 2015 In my desktop. Until Mavericks 10.9.5 generic kext for USB3 went fine, with no flags. With Yosemite it's all more difficult, I think I have to stop here, my components are becoming too old for new versions of OSX. 1 Link to comment https://www.insanelymac.com/forum/topic/304555-solved-usb3-often-dont-work-in-yosemite/#findComment-2111963 Share on other sites More sharing options...
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