How do you unfreeze a frozen Ubuntu?
Things to do when your Linux desktop GUI freezes
- Execute command xkill from terminal. …
- ubuntu-freeze-xkill cursor sign. …
- Using Alt + F2 command to open the dialog box. …
- Stop a program from the terminal using Ctrl + C. …
- Use the TOP program to Close programs. …
- Press Ctrl + Alt + F3 to drop to Console mode.
What should I do when Ubuntu freezes?
When everything stops working, first try Ctrl + Alt + F1 to go to a terminal, where you can likely kill X or other problem processes. If even that doesn’t work, try using holding down Alt + SysReq while pressing (slowly, with a few seconds between each) R E I S U B .
How do you unfreeze a Linux computer?
Ctrl + Alt + PrtSc (SysRq) + reisub
This will restart your Linux safely. It’s possible that you’ll have problem to reach all the buttons you need to press. I’ve seen people type reisub with their nose 
So, here’s my suggestion: With your smallest finger on the left hand, press Ctrl.
Why does Ubuntu freeze?
If you are running Ubuntu and your system randomly crashes, you may be running out of memory. Low memory could be caused by opening more applications or data files than will fit in the memory you have installed. If that is the problem, do not open so much at one time or upgrade to more memory on your computer.
Why does Ubuntu 18.04 freeze?
Ubuntu 18.04 completely froze while I was coding, then sometime later the same happened when I watched a movie it was a problem that was not related with the GPU and had random occurrence. I’ve found this solution after hours of searching. Just run this command and restart your computer. That’ll work fine.
How do I restart Ubuntu when it freezes?
Restart Gnome in Ubuntu
If your desktop can still respond to your keyboard, press Alt + F2 , type the single letter r on the pop-up window, and press Enter. This will restart your desktop environment without much fuss. If your desktop doesn’t respond to your input, though, you will have to take more drastic measures.
How do you unfreeze a terminal?
The Unresponsive Terminal
- Press the RETURN key. …
- If you can type commands, but nothing happens when you press RETURN, try pressing LINE FEED or typing CTRL-J. …
- If your shell has job control (see Chapter 6), type CTRL-Z. …
- Use your interrupt key (found earlier in this chapter—typically DELETE or CTRL-C. …
- Type CTRL-Q.
How do I boot Ubuntu into recovery mode?
Use Recovery Mode If You Can Access GRUB
Select the “Advanced options for Ubuntu” menu option by pressing your arrow keys and then press Enter. Use the arrow keys to select the “Ubuntu … (recovery mode)” option in the submenu and press Enter.
What should I do if Linux freezes?
9 Answers. You can try Ctrl + Alt + * to kill the front process (Screen locking programs on Xorg 1.11) or Ctrl + Alt + F1 to open a terminal, launch a command like ps , top , or htop to see running processes and launch kill on not responding process. Note: if not installed, install htop with sudo apt-get install htop .
How do I unfreeze Linux Mint?
Press ctrl-d and after that ctrl-alt-f7 (or f8), this should be bring you back to the login screen and you can open a new session without the need to reboot.