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El capitan USB issues - possible fix.

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Worked well for me! Gigabyte GA-Z97X Gaming 7 mobo!

However, cold boots and reboots are severely lacking in speed. Takes a solid minute to POST to the Clover loading screen for some reason now. Before I ran this fix, I was experimenting with the BIOS USB settings trying to see if that would resolve it, and I found that the lag comes from enabling "EHCI Hand-Off". I also experimented with turning "XHCI Mode" to "Enabled" instead of "Auto" or "Smart Auto" and that too would cause slow boot times. Once I get the chance I think I'll try disabling the "EHCI Hand-off" again and see if it all still works properly.

FWIW, I'm running a Plugable 7-port 60w powered USB 3.0 hub off of one of the USB 3.0 jacks on the back of the mobo, and then I have 3 USB 3.0 HDD's plugged into the hub, as well as my monitor's USB 2.0 hub plugged into that hub, with a MS Xbox 360 wireless adapter and Logitech C920 webcam plugged into it...

EDIT: I went ahead and disabled "EHCI Hand-off" and all appears to be working fine, and I got my normal POST/reboot times back as well. Huzzah!
 
free_refil
GA-Z97X-GAMING 7 |  i7 4790K |  GTX 970
Is that hex address valid for any usb controller/manufacturer?
 
RehabMan said:
It is clear from ioreg that you have built-in port injectors interfering...

Try renaming EHC1->EH01, EHC2->EH02.
Click to expand...


My DSDT didn't match a search of EHC. DSDT came from an export with Clover. Am I doing something wrong?
 
RehabMan said:
It must. I see it in ioreg. The names we see in ioreg come from ACPI.
Click to expand...

Attaching my IOReg file... maybe someone can point me in the right direction?

Looks like I am using XHC1 2 etc... Should it be EH01 EH02 and so on?

Also when not using a patch DSDT it shows differently, see attached
 

Attachments

  • enigma99a_2.ioreg
    4.1 MB · Views: 98
  • enigma99a_no_patched_DSDT.ioreg
    4 MB · Views: 84
Hello REHABMAN
I made the change in two places in the dsdt I not known whether if in the right place but it did not pass the EHC1, EHC2 in EHO2, EHO1
I use the dsdt tony mac if you can change the thank you
or it may be necessary to make changes to other places, I do not know, I think the problem has to touch everyone who uses the P55
 

Attachments

  • DSDT-GA-P55A-UD3-F11.aml
    15.2 KB · Views: 112
enigma99a said:
Attaching my IOReg file... maybe someone can point me in the right direction?

Looks like I am using XHC1 2 etc... Should it be EH01 EH02 and so on?

Also when not using a patch DSDT it shows differently, see attached
Click to expand...

EUSB and USBE are the native names. Not a good idea to rename it to XHC1/XHC2.

Best to leave these names as-is so they don't conflict with names Apple uses (EHC1/EHC2/XHC1).
 
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