I have Ubuntu 20.04.3 LTS and Bluetooth keyboard Dell WK717, the problem is that it stops working from time to time. It happens when the keyboard is idle for some short amount of time, it doesn't type immediately after I press a button but it requires me to press several times a button to make it work again. I had a similar problem with the Dell mouse but than I've got a logitech one and this problem doesn't occur any longer.
UPD the problem persists also with dells' universal usb UPD2 The problem is due to low charge of batteries.However, keyboard didn't signal low charge.
1 Answer
In terminal do
echo "options btusb enable_autosuspend=N" | sudo tee /etc/modprobe.d/btusb.confReboot and see if disabling autosuspend fixes the issue
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