I find myself sometimes wanting to quickly adjust the volume of an app. I can currently do this by hovering over the icon and then waiting for the popup and adjusting the slider. Likewise, I would like to see the option to use the mouse wheel (as you currently can to: - Cycles through all tasks - Cycles through that task's windows So one could simply hover over their app, whether it is a game, video playing, or anything else that makes sound, and adjust the volume quickly. In addition to this, to know how much the volume is changing and where it is now at, we could use the on-screen display (similar to when the user changes the global volume. This would show the application icon and title, and show the volume as the user scrolls on the taskbar icon.
A possibly relevant merge request was started @ https://invent.kde.org/plasma/plasma-desktop/-/merge_requests/3256
Git commit 79d010f4bcdb19d5a19d222dd3c3cb581fde891d by Nate Graham, on behalf of David Redondo. Committed on 24/10/2025 at 15:34. Pushed by ngraham into branch 'master'. applets/taskmanager: Allow changing a tasks volume by scrolling FIXED-IN:6.6 M +1 -0 applets/taskmanager/package/contents/config/main.xml M +2 -1 applets/taskmanager/package/contents/ui/ConfigBehavior.qml M +20 -0 applets/taskmanager/package/contents/ui/MouseHandler.qml https://invent.kde.org/plasma/plasma-desktop/-/commit/79d010f4bcdb19d5a19d222dd3c3cb581fde891d