Occasionally Ubuntu 18.04 will freeze. In windows there is the Ctrl+Alt+Delete shortcut. What do you do in Ubuntu?
Also, I saw that there were other questions like this, but it says they are duplicates and they don't point to the answer.
One of the "duplicates" had lots of suggestions of other things you could do in Ubuntu instead of those keys, like how to stop a certain process using the terminal. However, when the whole system freezes, you can't really start the terminal.
Is there a keyboard shortcut equivalent in Ubuntu or do I just have to turn the power off?