There are many lagging issues regarding mouse and screen in Ubuntu 17.10. In this post you will find 3 ways to solve the problem.
figlet and toilet can make a text more colourful and stylish. This post has described the usage of Figlet, Toilet etc. You can customize your word too.
Grub Rescue is a very normal problem when you delete some partition from Ubuntu. On the very Next booting, a grub rescue has appeared. If you don’t know how to deal with it, RELAX, KEEP PATIENCE, here is the answer how to fix grub rescue.