If you are using a desktop then this is not a bug. The brightness slider is for laptop screens only.
If you are using a laptop then it most likely is a kernel bug. ** Tags added: jammy ** Package changed: gnome-shell (Ubuntu) => linux (Ubuntu) -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1963754 Title: No brightness slider in settings Status in linux package in Ubuntu: Incomplete Bug description: This page mentions a brightness slider : https://help.ubuntu.com/22.04/ubuntu-help/display-brightness.html.en When I click on the system settings I see a (sound) volume slider but no brightness slider. screenshot : https://i.imgur.com/N6EWUra.png lsb_release -rd Description: Ubuntu Jammy Jellyfish (development branch) Release: 22.04 apt update/upgrade done today 2022-03-05 Gnome version 42.beta Windowing system X11 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1963754/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp