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