{"id":43683,"date":"2023-02-09T13:36:15","date_gmt":"2023-02-09T13:36:15","guid":{"rendered":"https:\/\/ubuntuhandbook.org\/?p=43683"},"modified":"2024-05-08T15:31:30","modified_gmt":"2024-05-08T15:31:30","slug":"menu-button-prevent-screen-blank","status":"publish","type":"post","link":"https:\/\/ubuntuhandbook.org\/index.php\/2023\/02\/menu-button-prevent-screen-blank\/","title":{"rendered":"Prevent Screen Blank While Watching Videos in Ubuntu"},"content":{"rendered":"

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Ubuntu has an indicator applet to quickly prevent screen goes blank, lock screen, and\/or automatically suspend on system idle.<\/p>\n

It’s “Caffeine”, a more than 10 years old tool, that’s now available as Gnome Shell Extension. Which is useful when watching movies, or doing automation process that needs screen to keep alive.<\/p>\n

Previously, it acts an indicator applet in the system tray on top-panel. By clicking on it will prevent (or allow again) screen blank and auto suspend when system idle.<\/p>\n

Now it’s available as an extension for the default Ubuntu Desktop, which adds a button in the upper right system menu, to quickly toggle on\/off system idle feature.<\/p>\n

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Besides prevent screen blank infinitely, there’s now also sub menu options to do the action in just 5, 10, or 30 minutes<\/b>. Once you enable Caffeine along with one of the time options, it shows the applet with count down timer<\/em><\/strong> in the aggregation icons on top-bar.<\/p>\n

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As well, instead of showing notifications, it now display volume control style OSD in center of bottom screen when toggling on\/off Caffeine option.<\/p>\n

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How to Install Caffeine in Ubuntu:<\/h3>\n

NOTE: Caffeine works on all current Ubuntu (Ubuntu 18.04, Ubuntu 20.04, Ubuntu 22.04, and Ubuntu 24.04<\/strong>), Fedora and other Linux with GNOME Desktop. Though, the features mentioned above are only for GNOME 43 so far.<\/p>\n

For Ubuntu 22.04<\/b> and Ubuntu 24.04,<\/strong> search for and install “Extension Manager<\/i>” from Ubuntu Software (or App Center).<\/b><\/p>\n

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Install Extension Manager in Ubuntu Software\/App Center<\/p><\/div>\n

Then launch it and use the tool to search and install Caffeine extension.<\/p>\n

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For old Ubuntu 18.04<\/b> and other Linux with GNOME, use the ON\/OFF switch at the page below to install it:<\/p>\n

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Caffeine extension page<\/a><\/div>\n<\/div>\n

Caffeine also has a configuration page can be opened either via “Extension Manager” or “Gnome Extensions” app. There you can do:<\/p>\n