My Ubuntu boots to GUI mode by default. How to make Ubuntu Linux boot to text mode?
If you are using Ubuntu older than 16 such as Ubuntu 14.04:
Edit
/etc/default/grub
ChangeGRUB_CMDLINE_LINUX=...
toGRUB_CMDLINE_LINUX="text"
.Backup your old grub config
`$ sudo cp -n /etc/default/grub /etc/default/grub.bak-
date +%sUpdate grub
$ sudo update-grub
If you are using Ubuntu 16.04 which uses systemd, please follow this tutorial:
How to Change Systemd Boot Target on Linux