Senin, 05 Juni 2023

How to Prevent Ubuntu from Going into Sleep Mode

How to Prevent Ubuntu from Going into Sleep Mode

You must have noticed it. You have installed Ubuntu and it seems all good. You leave the system inactive for five minutes or so and it is locked!

You enter your account password and log back in. So far, so good. But you leave it for a few minutes again and it gets locked again.

You have to enter your password again. And it goes on.

For laptops, it is even worse. The laptop goes into sleep mode, forcing you to use the power button to wake it from sleep.

This is annoying. It's frustrating to enter the password again and again because you left the system unattended. The good thing is that you don't have to live like this forever.

It is due to the default power-saving settings in Ubuntu and you can easily change it.

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I have noticed the same behavior in Fedora so it's not exclusive to Ubuntu. It is GNOME desktop's settings. And the steps mentioned here should be applicable to other distributions using the GNOME desktop environment.

Press the Super key (Windows key) and search for settings.

How to Prevent Ubuntu from Going into Sleep Mode

Prevent screen locking

In the Settings application, go to Power settings. Under the Power Saving Options, you should see a few options of interest.

For example, you can change the screen blank settings from the default 5 minutes to up to 15 minutes.

You can also disable the screen dimming entirely by choosing Never. This way, the screen never dims and never locks.

How to Prevent Ubuntu from Going into Sleep Mode
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That takes care of screen dimming and locking. Let's handle the automatic suspend issue.

Prevent automatic sleep

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Suspend and sleep means the same in Ubuntu's context. More info here.

Another setting you should change here is the Automatic Susepend. You can turn it off completely or change its time interval.

This way, Ubuntu will not go in sleep mode and you don't have to push the power button and then enter your password again to access the system.

How to Prevent Ubuntu from Going into Sleep Mode
Click to enlarge

If you don't want to change the power settings but also like the option to disable screen locking, there is a handy tool you could use.

Alternatively, use the Caffeine app

The idea is to give some caffeine (coffee) to your Linux system so that it does not sleep.

Let's see how to brew it. I mean how to use it.

First, install Caffeine on your Ubuntu system. You can look for it in the software center and install it from there.

How to Prevent Ubuntu from Going into Sleep Mode

Alternatively, you can use the following command in the terminal:

sudo apt install caffeine

Once installed, search for it in the activity area (press the Windows key and type caffeine).

Start the Caffeine Indicator as it comes with an applet indicator that sits on the top panel.

How to Prevent Ubuntu from Going into Sleep Mode

You'll now notice a coffee icon in the top panel. Click on it and click enable to activate the app.

How to Prevent Ubuntu from Going into Sleep Mode

That's it. As long as your system is on caffeine, it won't sleep 😉

Once you want to go back to normal behavior, deactivate the Caffeine app the same way you activated it.

More power settings tweaks

If you want to keep the laptop lid closed while it is connected to external monitors, here's what you can do.

Make Ubuntu Not Go in Suspend When Laptop Lid is Closed
If you use Ubuntu on a laptop, you might have noticed that the system is suspended when you close the lid. That’s the expected behavior. It saves the battery as well as your work. You lift the lid, the system wakes up, and you can log in and continue
How to Prevent Ubuntu from Going into Sleep Mode

I hope this quick little tutorial helped you prevent Ubuntu from going into sleep mode.

Let me know if you have questions or suggestions.



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