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> Apple Apple Aluminum Keyboard Problems, Hub is on Low Power & disconnect after sleep
iLeopod
post Oct 23 2011, 10:07 AM
Post #1
Hi all,

I own an Apple USB Keyboard with is really a nice pice of hardware but i have a few problems with it.

1. Hub is on low power

Even a USB stick that draw only 200 mA power is not possible:



According to System-Profiler only 100 mAa available per port:



Its not a hardware problem ( gigabyte Z68MX-UDH2) because on Windows it's working with registry fix (ForcePortPower).

In AppleUSBMergeNub.kext is following config:



I tried to add following lines to ehci devices in dsdt:
CODE
"AAPL,current-available",
                        0x0834,
                        "AAPL,current-extra",
                        0x0A8C,
                        "AAPL,current-extra-in-sleep",
                        0x0A8C,
                        "AAPL,max-port-current-in-sleep",
                        0x0834,


Can i get it working using some of the following properties in AppleUSBMergeNub.kext :
CODE
kUSBHubDontAllowLowPower
kResetOnPowerStatusChange
kStartupDelay
OverrideConfig0MaxPower
kIgnoreDisconnectOnWakeup


Any help or clarification welcome!

2. Keyboard disconnect after sleep wake
Found a DSDT patch . but not working for me.

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