All these little tools will be useful for the paranoid, but in my case, they cause the machine to crash and make me unproductive.
After removing them, the machine finally became stable.
1 – Disable error reporting.
vi /etc/default/apport
set the parameter:
enabled=0
2 – Remove snapd
sudo apt autoremove --purge snapd
sudo apt-get remove --purge gnome-software-plugin-snap
rm -rf ~/snap
3 – Remove apparmor
sudo /etc/init.d/apparmor stop
sudo update-rc.d -f apparmor remove
4 – Install a recent kernel
sudo apt-get install --install-recommends linux-generic-hwe-18.04 xserver-xorg-hwe-18.04