Hi, just posted this message to confirm that the solution in this thread is still valid in Deepin 20.6 (20220828).
After installing Deepin, I also couldn't find any Bluetooth switch. Bluetooth adapter appeared in Device Manager but I couldn't manage it. Then I searched and found this thread. To summarize, here are what I did
Code:
sudo systemctl start bluetooth
sudo systemctl enable bluetooth
sudo apt-get install -y blueman
After installing Blueman, I opened it and voila, Bluetooth switch appeared in the Dock.
My Bluetooth adapter is Atheros AR9285 Malbec Bluetooth Adapter.