The "Display Configuration" section of the "Display and Monitor" module contains a button labelled "Unify outputs". This button is always active, but from what I can tell it is effective only when there is more than one display. I suggest that the button should be deactivated whenever there is only one display. I am using System Settings 4.11.20 on KDE 4.14.9 as packaged by openSUSE 13.2. Reproducible: Always
Shouldn't it also rather be a check box?
Yes, a checkbox seems more appropriate to me. But again, it should be deactivated when there's only one display.
Not sure about the checkbox, the "unify outputs" just sync the size and position between the outputs, there's no such mode as "clone mode", so a checkbox would be misleading and make the whole thing less flexible. Otherwise, yes, button should be disabled for only one output.
Git commit e886c69e9a9bbd033f5a4d5dd12df0e4d7521b1f by Sebastian Kügler. Committed on 16/10/2016 at 22:15. Pushed by sebas into branch 'master'. Disable unify button when only one output is connected FIXED-IN:5.8.2 M +1 -0 kcm/src/widget.cpp http://commits.kde.org/kscreen/e886c69e9a9bbd033f5a4d5dd12df0e4d7521b1f
Git commit 6dcc9b19be52fdf5b4c8148124758f7392646719 by Sebastian Kügler. Committed on 16/10/2016 at 22:16. Pushed by sebas into branch 'Plasma/5.8'. Disable unify button when only one output is connected FIXED-IN:5.8.2 M +1 -0 kcm/src/widget.cpp http://commits.kde.org/kscreen/6dcc9b19be52fdf5b4c8148124758f7392646719