Version: unspecified (using KDE 4.5.0) OS: Linux I have KDE set up (and working) for single-clicks everywhere (and have confirmed this in Dolphin & Konqueror). However, the system-settings application requires every icon to be double-clicked. This shouldn't be necessary. Reproducible: Always Steps to Reproduce: Click an icon within the system-settings application. Nothing happens (except for highlighting the icon). One must double-click to get a reaction. Expected Results: Single-clicks should work normally. (Double-clicking is very, very counter-intuitive on *nix - and it's not even as though there is anything one could *do* with the control-center icons, such as dragging them, or editing them).
Are you using the Classic or Icons view? Both behave correctly here, and I use single click my self. Are you able to reproduce under a new user? I suspect corrupt configuration or distribution patches.
You're right - if I use the xguest account, and then start system-settings, and then configure the mouse to single-click, it now works correctly. This machine is about 4 years old, and has maintained the same user account for all that time. So probably this bug is to do with the kde3 -> kde4 migration. (However, I can't blame old profile settings for everything: eg in either account, marble crashes instantly on launch). How is it possible to get a corrupt configuration of a boolean value? Even if I toggle the mouse from single->double->single, clicking apply each time, I can't seem to reset the config to the correct one. Is there another workaround besides deleting my entire .kde4 directory?
Open .kde4/share/config/ in Dolphin sorting order by Date. Change your value. Compare the modified files (*) with kdiff3 before/after or correct config files. You also may rename (*) to something like *~ and logout/login. If you can fix it, you don't need the backup files (*~) anymore.
This is caused by corrupt configs.