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Fix for “No Bluetooth Found” error after wake from sleep

Bluetooth settings panel in Pop!_OS showing the Bluetooth logo and the message: “No Bluetooth Found. Plug in a dongle to use Bluetooth.” The switch normally used to turn Bluetooth on looks broken in the window’s top bar, with only the thumb showing.

Bluetooth: still asleep, apparently.

After waking from sleep, my computer1 would stop detecting the built-in bluetooth interface. The exact error I was getting in the Settings panel was:

No Bluetooth Found. Plug in a dongle to use Bluetooth.

The fix was to update BlueZ, the official Linux Bluetooth stack:

sudo add-apt-repository ppa:bluetooth/bluez
sudo apt install bluez

I no longer appear to have the issue with BlueZ version 5.50.

To check the version of your bluetooth driver, you can query the BlueZ daemon:

bluetoothd -v

  1. I’m running Pop!_OS 18.04 but this issue may affect you if you’re on Ubuntu 18.04 or some other distribution also as it appears to be related to a bug in an earlier version of the official Linux bluetooth stack. [return]