2 years later, I still have the same issue.

In Raspbian, using the built-in Bluetooth controller:

  • Connect a BT mouse
  • Connect a BT keyboard
  • Turn on the built-in Wifi and connect to a network

Expected behavior:

The mouse and keyboard should work properly, as anyone would expect.

Actual behavior

  • Mouse and keyboard will work intermittently and erratically.
  • Mouse and keyboard devices will will disconnect (BT led will stop blinking) seconds after the user stops using them. They will connect againg (wake up) eventually and unpredictably.

Interestingly enough, the wrong behavior disappears as soon as the Wifi controller is turned off.

How can I fix this?

  • What is the power source you are using . Would be good more than 2,5 AMPs – E_Angel May 16 '18 at 10:11
  • Yes, I'm using a recommended power source :) 3 AMPs – SuperJMN May 16 '18 at 15:01

The only solution would be to get external bluetooth / WiFi adapter, as the modules on RPI share antena path :(

  • I don't think so. Using the same Raspberry Pi 3, but with Windows 10 IoT Core, I've been able to use both mouse and keyboard without a hitch. The 2 devices work perfectly at the same time, whereas in Raspbian doesn't. I do believe that it's not a hardware thing. – SuperJMN May 16 '18 at 15:04

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