In system settings in Displays configuration there is an identify button. But it is still not such a convinient way of identification, because you need to read display name, remember it and then compare it to names of displays that are shown in the configuration area. I would like notification like in mac os. When you hold a mouse on a display in the configuration area, it becomes surrounded with red frame and also a red frame appears on entire display. It is very easy to identify displays visually. Here is a video demonstration: https://youtu.be/jmdLJyYEcdc?t=184 And also in mac os display configuration there is a white bar, identifying main output. And we could also repeat this. Operating System: Arch Linux KDE Plasma Version: 5.14.3 Qt Version: 5.11.2 KDE Frameworks Version: 5.52.0
The video mentioned gone private. Here is another one: https://youtu.be/J4iV965vpIc?si=64sY-5HqQXL8jM9i&t=134