HT204540: If your wireless or USB keyboard doesn't work
Learn about If your wireless or USB keyboard doesn't work
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Helpful answers
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Mar 31, 2016 12:14 PM in response to willbird915by tcurtis360,Very fair points! The main reason I went to suspecting contacts was the fact the extension fixes the issue immediately. Yesterday my curiosity got the best of me and I smashed a spare USB extender to find there is nothing in there controller wise just wired to the contacts. After ripping open a apple wired keyboard I found the following usb controller http://media.digikey.com/pdf/Data%20Sheets/Cypress%20PDFs/CY7C63310,%20638xx,%20 639xx.pdf built into the keyboard and wonder if the update is affecting the usb controller inside the keyboard thats connected while updating? Still can't wrap my head around the extension piece or why several disconnects and reconnects helped.
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May 22, 2016 5:27 PM in response to willbird915by belfromearth,I have MacBook Air (early 2015). Just upgraded to OS X El Capitan (10.11.5) - the external USB keyboard did not work and was not found in the system report. Tried resetting etc and still nothing. Plugged into extension cable and worked instantly. Tried plugging back in on its own and same issue not picked up. Just thought I'd post here as this issue is still occurring.
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May 22, 2016 5:31 PM in response to gkennellyby gkennelly,The latest upgrade to El Capitan 10.11.5 has fixed this issue for me - I have removed the USB Extender in between the USB Keyboard and my iMac 5K and the keyboard now works (working as I type).
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May 22, 2016 5:50 PM in response to belfromearthby gkennelly,Strange - as 10.11.5 fixed this issue on my iMac 5K late 2014.
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Jul 5, 2016 10:38 PM in response to willbird915by jamiejpress,Hi mate,
I've tried many a remedy for this but found the following sequence worked:
- With computer on, disconnect USB keyboard (if not already as it's not working, haha)
- Turn off Bluetooth
- Plus USB keyboard back in and test (for, this worked)
- Turn Bluetooth back on
Cheers,
Jamie
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Jul 15, 2016 3:23 PM in response to shmeltexby ConsciousWarrior,This did the trick for me! Thanks so much for posting it.