Since recently, there's this very nice feature of the little speaker icons shown on the window selectors in the task manager, which toggles audio mute of that specific application.

As far as I could determine, there's currently no way to activate this functionality using a keyboard shortcut.

I've been in a number of situations where I was wishing for that exact keyboard shortcut, such as:

- (quickly) muting an audio player on an incoming video conference / soft phone call

- muting a full screen game when a "hard" phone call comes in, but leaving audio notifications from other applications intact during the call

- Wanting to quickly silence audio prompts by one certain set of applications, while enabling others

... etc.

All necessary information (active task, how to do the per-application mute toggle) is obviously already available to the Task Manager - the active application is shown highlighted, and the mute button there knows what to do.


I'm tempted to have a look to roll a patch / enhancement myself, in that regard a question to the people who might know:

Is the Task Manager an integral part of kwin, or is it a separate/different component (which/where)?

... since kwin already registers a number of keyboard shortcuts, extending this by the one more feels feasible to me even without knowing KDE code in depth. However, adding keyboard shortcut functionality to a component that doesn't have any at all so far, not so much. ;-)