{"id":44075,"date":"2023-06-13T15:18:31","date_gmt":"2023-06-13T15:18:31","guid":{"rendered":"https:\/\/ubuntuhandbook.org\/?p=44075"},"modified":"2024-05-05T15:48:37","modified_gmt":"2024-05-05T15:48:37","slug":"brightness-slider-external-monitor-ubuntu","status":"publish","type":"post","link":"https:\/\/ubuntuhandbook.org\/index.php\/2023\/06\/brightness-slider-external-monitor-ubuntu\/","title":{"rendered":"Add Brightness Slider Control for External Monitor in Ubuntu"},"content":{"rendered":"

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Running Ubuntu on Desktop PC or laptop with external monitor? You can add a slider in top-right system menu to control the screen brightness.<\/p>\n

Unlike laptop’s built-in screen, most Linux today does not provide brightness control for external monitors.<\/p>\n

Fortunately, there’s a ddcutil<\/code> utility can do the job via ddc\/ci protocol, which is supported in most external monitors. And, there’s an extension to add the slider control to system status menu.<\/p>\n

\"\"<\/a>

brightness slider for external monitor<\/p><\/div>\n

The extension supports all current Ubuntu releases, including Ubuntu 20.04<\/b>, Ubuntu 22.04<\/b>, and Ubuntu 24.04<\/b>, as well as other Linux with recent Gnome desktop, such as Fedora Workstation, Debian, RHEL.<\/p>\n

NOTE: DDC\/CI is usually enabled by default. Just in case, use your monitor’s physical button to make sure the option is enabled!<\/b><\/p>\n

1.<\/b> First of all, press Ctrl+Alt+T<\/b> on keyboard to open terminal. When it opens, run command to install the ddcutil<\/code> utility in Ubuntu:<\/p>\n

sudo apt install ddcutil<\/pre>\n
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2.<\/b> Next, add your current user to ‘i2c’ group to grant permissions:<\/p>\n
sudo gpasswd --add $USER i2c<\/pre>\n
\"\"<\/a><\/p>\n
3.<\/b> Install “Extension Manager<\/b>” tool from Ubuntu Software (or App Center) for installing and managing extensions.<\/p>\n
\"\"<\/a>
Install Extension Manager in Ubuntu Software\/App Center<\/p><\/div>\n
For Ubuntu 20.04<\/b>, run command to install “Gnome Extensions” app instead, as well as agent package for browser integration.<\/p>\n
sudo apt install gnome-shell-extension-prefs chrome-gnome-shell<\/pre>\n
4.<\/b> Ubuntu 22.04 + can now launch “Extension Manager” and use the tool to search and install “Brightness control using ddcutil<\/i>” extension.<\/p>\n
\"\"<\/a><\/p>\n
For Ubuntu 20.04<\/b>, go to this page<\/a> in web browser, install browser extension if prompted (refresh after installation), and finally turn on the ON\/OFF switch to install that extension.<\/p>\n
5.<\/b> The extension by default add an indicator applet in panel with brightness slider. To configure it, open ‘Installed’ tab in “Extension Manager<\/b>” (or ‘Gnome Extensions’ app for Ubuntu 20.04).<\/p>\n
Then, click on either gear button or ‘Settings’ button for that extension. Finally, set button location to “System Menu” and turn on “Hide System Indicator” for better integration.<\/p>\n
\"\"<\/a><\/p>\n
That’s all. Enjoy!<\/p>","protected":false},"excerpt":{"rendered":"
Running Ubuntu on Desktop PC or laptop with external monitor? You can add a slider in top-right system menu to control the screen brightness. Unlike laptop’s built-in screen, most Linux today does not provide brightness control for external monitors. Fortunately, there’s a ddcutil utility can do the job via ddc\/ci protocol, which is supported in […]<\/p>\n","protected":false},"author":1,"featured_media":43719,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[9],"tags":[588,689],"class_list":["post-44075","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-howtos","tag-brightness-control","tag-gnome"],"amp_enabled":true,"_links":{"self":[{"href":"https:\/\/ubuntuhandbook.org\/index.php\/wp-json\/wp\/v2\/posts\/44075","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/ubuntuhandbook.org\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/ubuntuhandbook.org\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/ubuntuhandbook.org\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/ubuntuhandbook.org\/index.php\/wp-json\/wp\/v2\/comments?post=44075"}],"version-history":[{"count":0,"href":"https:\/\/ubuntuhandbook.org\/index.php\/wp-json\/wp\/v2\/posts\/44075\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/ubuntuhandbook.org\/index.php\/wp-json\/wp\/v2\/media\/43719"}],"wp:attachment":[{"href":"https:\/\/ubuntuhandbook.org\/index.php\/wp-json\/wp\/v2\/media?parent=44075"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/ubuntuhandbook.org\/index.php\/wp-json\/wp\/v2\/categories?post=44075"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/ubuntuhandbook.org\/index.php\/wp-json\/wp\/v2\/tags?post=44075"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}