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I paired my K520 keyboard and M705 mouse with a Unifying receiver on Windows. When I plugged the receiver into my Ubuntu 12.04 machine it worked fine. However, after I upgraded to 14.04, my keyboard and mouse are no longer working.

lsusb | grep Logitech output:

Bus 003 Device 002: ID 046d:c52b Logitech, Inc. Unifying Receiver

dmesg | grep Logitech output:

[54.126593] usb 3-4: Manufacturer: Logitech

I installed Solaar, but it gives this error message:

No Logitech receiver found

How do I make it so that they are detected?

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  • Are you plugging the Logitech dongle directly into a USB port on the computer, or into a USB hub? Try plugging it directly into a port on the computer. Have you upgraded the firmware in the dongle? If not, go to the Logitech site and download the updater.
    – heynnema
    Commented Jan 5, 2017 at 17:44
  • @heynnema I am using notebook, and I am plugging it directly. I have just checked and it seems that my firmware is up to date. Any other idea?
    – Milan
    Commented Jan 8, 2017 at 9:27
  • Do you have another Logitech receiver dongle that you can try? Do you have another computer running Ubuntu to try it on? You could also try booting to a Ubuntu 16.10 Live DVD and see if it works there.
    – heynnema
    Commented Jan 8, 2017 at 13:55

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