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I have a raspberry pi and I have been using it for a couple of hours with no issues, then suddenly they keyboard does not work, I have rebooted the pi, but when I get to the login screen I can't do anything since they keyboard isn't working. I know the keyboard works b/c if I plug into my mac, I can use the keyboard just fine. I was and still using a 12V supply at 3A. How do I fix this?

  • Is this a wired (i.e. USB keyboard) or a wireless keyboard? If it is a wireless keyboard, is it Bluetooth or something else? – Phil B. May 6 '15 at 17:43
  • @PhilB. it is wired – FreshTendrils May 6 '15 at 18:21
  • I just tried using another keyboard, and the same issue arises – FreshTendrils May 6 '15 at 18:21
  • 2 things: 1) Have you tried using a different USB port? 2) What kind of power supply are you using for your rPi (and what type of rPi is this - A/A+/B/B+/2B ?). I have seen keyboard malfunctions like this on my Pis when the power supply was not able to provide enough amps - either because the supply was crappy (cheap HTC clones) or because the Pi and its peripherals needed too much power (in case of an rPi 2 with USB mouse/keyboard and Wifi dongle) – Phil B. May 6 '15 at 18:25
  • @PhilB. I am using a pi compute module, so I only have 1 USB port. I took out all other connections except for an HDMI and canbus. I changed the power supply, but it is 12 V, so it should be plenty be enough. – FreshTendrils May 6 '15 at 18:31
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It was a hardware issue, a delicate wire on the prototype board had come off, quick soldering fixed the issue.

  • Hurray for fixing your own problem ! :) – Phil B. May 6 '15 at 18:48

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