What should I do if my Linux system is frozen?

What should I do if my Linux system is frozen?

Here are various ways to deal with a frozen Linux system. 1. Kill an unresponsive program with xkill 2. Revive a frozen Linux system with virtual consoles (TTY) 3. When everything else fails, talk with the Kernel using SysReq

How to kill a frozen application in Ubuntu?

In Ubuntu, there are several methods that can be used to kill frozen applications safely and quickly without rebooting your system: xkill, system monitor utilities, and the commands kill, pkill, and killall. In this article, we will discuss these methods on a machine running Ubuntu 20.04 LTS (Focal Fossa).

How to fix a frozen Ubuntu MATE login screen?

To reset the Ubuntu Mate login screen in the event of a frozen session, you will need to restart the lightdm.service file with the systemctl restart command. Using the command below, reset the LightDM login manager. sudo systemctl restart lightdm.service

How can I kill an unresponsive program in Linux?

Before you can use the kill command, your system needs to know the Process ID (PID) of the unresponsive program. PID is a number that automatically identifies each process when created on any Linux OS. An advantage of this method is that it works on all Linux systems.

Which is logs can I check out Ubuntu?

Ubuntu freezes. Which logs can I check out? So my computer has lately started freezing completely when I run some programs that, in the past, would work great. What I am unsure about however, is what logs that are available to me that could help me track down the issue after a reboot?

How to stop Linux system from running out of memory?

Since the Linux OOM killer isn’t able to do its job properly, I started using a userspace OOM Killer: earlyoom. It’s written in C, fairly configurable and it’s working like a charm for me. This is a known bug since 2007 – see System freeze on high memory usage.

What to do if your computer freezes on startup?

Once you are logged in you have a few options. You can attempt to kill a defunct program with the kill or killall command. You can kill the window manager, X server or login manager. This will kill all child processes and, if all goes well, your login manager will restart presenting you with your graphical login screen.

Is it possible for Linux to become unresponsive?

Linux is known to be very stable, but even the most stable system can encounter situations that cause it to become unresponsive. Then comes the awful feeling as you push and hold “Power”. There are a few tricks with Linux one can attempt in such a case.

What to do when your computer freezes up?

If you are lucky, it will popup sooner then later. Then you can execute xkill and point the cursor at the defunct window and click it away. Xkill works faster than the traditional X icon or right-clicking the window on the taskbar and clicking close.

Is there a way to avoid a reboot in Linux?

There are a few tricks with Linux one can attempt in such a case. At this point, we are not looking to save any unsaved work. We want to find a way to avoid a reboot or at least provide the cleanest reboot possible to avoid corruption.

What to do if your X Server freezes?

If your X server (the program that runs your graphical desktop) freezes, you may find yourself unable to use your system. There are a few magic SysRq commands that can help: Alt + SysRq + r – Takes the keyboard out of raw mode, taking control away from the X server.

How do I restart the X server on Linux?

Ctrl+Alt+Backspace. The Ctrl+Alt+Backspace keyboard shortcut traditionally restarted the X server on Linux. However, after complaints – particularly from new Linux users that accidentally hit this key combination and lost all their work — this shortcut was disabled by default.

What should I do if my desktop freezes?

One of the most common solutions to fix a frozen desktop is to restart the PC. An easier way is to just restart the desktop. Let’s see how to do this on three of the most popular desktop environments: Gnome, KDE, and XFCE.

How to restart a frozen desktop in Ubuntu?

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.

What to do if your desktop freezes in Xfce?

The primary desktop element of XFCE – and the most probable to freeze – is its panel. To restart it, if your desktop is still somewhat responsive, fire up a terminal by using the Ctrl + Alt + T combination and type: This command will “kill” the panel. To reload it, enter: