Problem Solved

Swappiness controls the tendancy the kernel wishes to swap. Even with free memory the kernel may swap. 100 means aggressively swap 3 me...

install npm on ubuntu 18.04 LTS first, install the nvm curl -sL https://raw.githubusercontent.com/creationix/nvm/ v0.34.0 /install.sh...

Open the terminal and run this command ~$ ls -l /var/crash/ and then ~$ sudo rm /var/crash/* last change the file into this w...