Could you test the following kernel ppa please:
sudo add-apt-repository ppa:mapengyu/bionic-oem sudo apt-get update
sudo apt install linux-image-unsigned-4.15.0-73-generic linux-modules-4.15.0-73-generic linux-modules-extra-4.15.0-73-generic
Could you test the following kernel ppa please:
sudo add-apt-repository ppa:mapengyu/ bionic- oem
sudo apt-get update
sudo apt install linux-image- unsigned- 4.15.0- 73-generic linux-modules- 4.15.0- 73-generic linux-modules- extra-4. 15.0-73- generic