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Pi 1 B USB not recognising keyboard or mouse

vfwfw

I have a Raspberry Pi 1B and the USB has stopped recognising my mouse and keyboard. I have checked that the USB ports are getting 5v power, and when I boot up I don't see any error messages, but neither mouse or keyboard works. I have tried using a powered USB hub as well, but that doesn't work either. Any suggestions?

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  • 0 in reply to clem57

    Clem, I have tried SSH but I can't get it to connect to my network. I think the ethernet port isn't being recognised either. I have tested the USB ports and they appear to be getting 5v power, but I'm not sure how to test the ethernet port to see if it's getting power. Is there some way to test that?

  • 0 in reply to vfwfw

    You indicate you have SSH. How have you determine the IP address for the Pi?

     

    Sean

  • 0 in reply to colporteur

    I stated that I have 'tried' to use SSH, but unsuccessfully as the ethernet port does not seem to be recognised.

     

    When I connect the PI via ethernet cable and boot up the PI, it is not present in my router, so therefore can't determine the IP address.

  • 0 in reply to vfwfw

    As I mentioned earlier, I suspect your SMSC LAN chip has failed as it's responsible for the USB to Ethernet and USB hub functionality on the Raspberry Pi Model B.

     

    If you change to a known good image and still cannot get a network link, perhaps plug in keyboard/mouse/HDMI and check the output of dmesg, ifconfig and lsusb. If the SMSC/Microchip LAN chip does not show up or has no active link, that's a good symptom that the chip has failed. Likewise, if the downstream attached peripherals do not work or do not show up, that's also a sign.

     

    If you wish to salvage it, you could "kind of" turn it into a Model A by removing the SMSC LAN chip altogether and trying to bridge the D- and D+ lines coming into the chip to one of the USB ports (as the A is basically sans SMSC LAN chip, hence single port straight from the SoC), assuming that the SoC has not been damaged.

     

    - Gough

  • 0 in reply to Gough Lui

    Your response gives me confidence you have sufficient knowledge to troubleshoot networking the Pi. I didn't want to go into a configuration diatribe to have you ask the question what is an IP address.

     

    It appears from your description the Pi is setup to get an IP address from a DHCP source on the network verses manually configured IP. It has failed to get an address, therefore it is unable to provide SSH connection.

     

    Here is my quick summary. The Pi is not recognizing devices connected to the USB port. The Pi Ethernet port is not receiving an IP address. The Pi was working and is not a result of a recent change (i.e. I replaced the USB keyboard).

     

    If we follow

    commentary the next step is a O/S reload. Build a replacement image on a separate SD. Do not use the card that is part of the problem child. Follow those steps that gives you the confidence of a solid image install. The assumption is you have done this before with success. Don't change any variables like trying the latest O/S. Use what has worked in the past.

     

    If the SD card images is unsuccessful in the problem child, try the same card on another Pi. The second test knowledge will re-enforce the understanding it appears to be a hardware issue.

     

    Sean