After applying the this solution and then executing the commands in this solution, that kinda solved the problem for me, I just still have a problem with deactivating and re-activating bluetooth.
The steps for the solution are:
- Download and install the RT3290 driver
sudo apt-get update
sudo apt-get install build-essential linux-headers-generic
mkdir ~/tmp
cd ~/tmp
git clone https://github.com/loimu/rtbth-dkms.git
cd rtbth-dkms/
make
sudo make install
sudo cp -r ./ /usr/src/rtbth-3.9.3
sudo dkms install rtbth/3.9.3
sudo nano /etc/modules
Add rtbth at the end, then Ctrl+O and ENTER (to save the file) and Ctrl+x to close the editor
- Reboot
"Until this point I still couldn't activate bluetooth".
Execute these commands
sudo add-apt-repository ppa:blaze/rtbth-dkms
sudo apt-get update
sudo apt-get install rtbth-dkms
sudo modprobe rtbth
sudo rfkill unblock bluetooth
And with this I can scan for devices, send and receive files regularly.
--EDIT--
I found a solution for reactivating Bluetooth on startup (based on solution of this question).
As /etc/rc.local doesn't exist for Ubuntu 18.04
you'll need to create one and make it executable. To make things slightly easier, you can just paste the following command into a terminal:
sudo install -b -m 755 /dev/stdin /etc/rc.local << EOF
#!/bin/sh
modprobe rtbth
rfkill unblock bluetooth
exit 0
EOF
This creates /etc/rc.local file and put in it the previous commands and executes every startup, just don't turn bluetooth off.
sudo depmod -ayou could skip the step of adding rtbth to /etc/modules – Jeremy31 Oct 31 '18 at 22:06