├── .gitignore
├── Makefile
├── README.md
└── USBHubPowerFix.kext
    └── Contents
        └── Info.plist


/.gitignore:
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1 | USBHubPowerFix.kext/Contents/_CodeSignature/
2 | *.zip
3 | 


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/Makefile:
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 1 | KEXT=		USBHubPowerFix.kext
 2 | 
 3 | CODESIGN=	codesign
 4 | KEXTUTIL=	kextutil
 5 | SUDO=		sudo
 6 | TAR=		tar
 7 | 
 8 | DESTDIR=	/Library/Extensions
 9 | IDENTITY=	E1E40BB5B7277129FCA48576BBC1625463B13386
10 | 
11 | all:
12 | 
13 | sign:
14 | 	${CODESIGN} -s ${IDENTITY} ${KEXT}
15 | 
16 | check:
17 | 	${SUDO} ${KEXTUTIL} -t ${KEXT}
18 | 
19 | package:
20 | 	${TAR} cvf ${KEXT}.zip --format zip ${KEXT}
21 | 
22 | clean:
23 | 	${RM} -r ${KEXT}/Contents/_CodeSignature ${KEXT}.zip
24 | 
25 | install:
26 | 	${SUDO} cp -R ${KEXT} ${DESTDIR}
27 | 	${SUDO} chown -R root:wheel ${DESTDIR}/${KEXT}
28 | 	${SUDO} chmod -R og-w ${DESTDIR}/${KEXT}
29 | 
30 | load:
31 | 	${SUDO} kextload ${DESTDIR}/${KEXT}
32 | 


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/README.md:
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 1 | # USBHubPowerFix
 2 | 
 3 | This codeless kext fixes "USB Device Needs Power" alert with non-Apple non-powered USB hubs
 4 | in El Capitan (OS X 10.11) and later.
 5 | 
 6 | Many of such hubs worked flawlessly in Yosemite but stopped working in El Capitan.
 7 | Whenever a USB device is plugged in into the hub the "USB Device Needs Power" alert appears with
 8 | the following error in the */var/log/system.log*:
 9 | 
10 | ```
11 | Aug 10 09:25:08 Maximilians-iMac kernel[0]: 034851.758657 USB Mass Storage Device@fa124000: IOUSBHostDevice::setConfigurationGated: 480mA of bus current is not available
12 | Aug 10 09:25:08 Maximilians-iMac kernel[0]: 034851.758664 AppleUSBCDCCompositeDevice@: AppleUSBHostCompositeDevice::ConfigureDevice: unable to set a configuration (0xe0005001)
13 | ```
14 | 
15 | I noticed that Apple USB Hub in Apple Keyboard however works in El Capitan.
16 | 
17 | The properties injected by this kext are copied from *Apple Aluminium Keyboard Properties*
18 | from *AppleUSBHub.kext* driver (see here: */System/Library/Extensions/IOUSBHostFamily.kext/Contents/PlugIns/AppleUSBHub.kext/Contents/Info.plist*).
19 | 
20 | ## Installation
21 | 
22 | 1. Edit Vendor and Product ids to match your hub in *USBHubPowerFix.kext/Contents/Info.plist*
23 | (you can find them by looking at idProduct and idVendor properties in `ioreg -c IOUSBHostDevice -r -l -w0` output).
24 | 2. Run `make install`.
25 | 
26 | Note: This kext is not signed. You need either to [disable SIP](http://apple.stackexchange.com/questions/208478/how-do-i-disable-system-integrity-protection-sip-aka-rootless-on-os-x-10-11) or sign it (see [Signing](#signing) below).
27 | 
28 | ## Testing
29 | 
30 | 1. Run `sudo kextload /Library/Extensions/USBHubPowerFix.kext` or `make load`
31 | 2. Check the output of `ioreg -c IOUSBHostDevice -r -l -w0` - *kUSBConfigurationCurrentOverride* property should appear in the output.
32 | 3. Please send me (as pull request or to fjoe@samodelkin.net) product id, vendor id and USB hub name if the fix works.
33 | 
34 | ## Signing
35 | 
36 | You need to have Apple Developer Program subscription and [request a kext signing certificate](https://developer.apple.com/contact/kext/).
37 | 
38 | 1. Modify IDENTITY= in Makefile
39 | 2. Run `make sign`
40 | 


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/USBHubPowerFix.kext/Contents/Info.plist:
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 1 | <?xml version="1.0" encoding="UTF-8"?>
 2 | <!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
 3 | <plist version="1.0">
 4 | <dict>
 5 | 	<key>CFBundleDevelopmentRegion</key>
 6 | 	<string>en</string>
 7 | 	<key>CFBundleIdentifier</key>
 8 | 	<string>net.samodelkin.USBHubPowerFix</string>
 9 | 	<key>CFBundleInfoDictionaryVersion</key>
10 | 	<string>6.0</string>
11 | 	<key>CFBundleName</key>
12 | 	<string>UsbHubPowerFix</string>
13 | 	<key>CFBundlePackageType</key>
14 | 	<string>KEXT</string>
15 | 	<key>CFBundleShortVersionString</key>
16 | 	<string>1.0</string>
17 | 	<key>CFBundleSignature</key>
18 | 	<string>????</string>
19 | 	<key>CFBundleVersion</key>
20 | 	<string>1</string>
21 | 	<key>IOKitPersonalities</key>
22 | 	<dict>
23 | 		<key>Asmedia USB Hub</key>
24 | 		<dict>
25 | 			<key>CFBundleIdentifier</key>
26 | 			<string>com.apple.driver.AppleUSBHostMergeProperties</string>
27 | 			<key>IOClass</key>
28 | 			<string>AppleUSBHostMergeProperties</string>
29 | 			<key>IOProviderClass</key>
30 | 			<string>IOUSBHostDevice</string>
31 | 			<key>IOProviderMergeProperties</key>
32 | 			<dict>
33 | 				<key>kUSBConfigurationCurrentOverride</key>
34 | 				<integer>500</integer>
35 | 				<key>kUSBHubPortSequenceDelay</key>
36 | 				<integer>100</integer>
37 | 				<key>kUSBSleepPortCurrentLimit</key>
38 | 				<integer>500</integer>
39 | 				<key>kUSBWakePortCurrentLimit</key>
40 | 				<integer>500</integer>
41 | 			</dict>
42 | 			<key>idVendor</key>
43 | 			<integer>7172</integer>
44 | 			<key>idProductArray</key>
45 | 			<array>
46 | 				<integer>8308</integer>
47 | 			</array>
48 | 		</dict>
49 | 		<key>NeoDrive USB Hub</key>
50 | 		<dict>
51 | 			<key>CFBundleIdentifier</key>
52 | 			<string>com.apple.driver.AppleUSBHostMergeProperties</string>
53 | 			<key>IOClass</key>
54 | 			<string>AppleUSBHostMergeProperties</string>
55 | 			<key>IOProviderClass</key>
56 | 			<string>IOUSBHostDevice</string>
57 | 			<key>IOProviderMergeProperties</key>
58 | 			<dict>
59 | 				<key>kUSBConfigurationCurrentOverride</key>
60 | 				<integer>500</integer>
61 | 				<key>kUSBHubPortSequenceDelay</key>
62 | 				<integer>100</integer>
63 | 				<key>kUSBSleepPortCurrentLimit</key>
64 | 				<integer>500</integer>
65 | 				<key>kUSBWakePortCurrentLimit</key>
66 | 				<integer>500</integer>
67 | 			</dict>
68 | 			<key>idVendor</key>
69 | 			<integer>2565</integer>
70 | 			<key>idProductArray</key>
71 | 			<array>
72 | 				<integer>1</integer>
73 | 			</array>
74 | 		</dict>
75 | 	</dict>
76 | 	<key>OSBundleLibraries</key>
77 | 	<dict/>
78 | </dict>
79 | </plist>
80 | 


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