Every time when I come home and plug my external monitor into my notebook, I have to start the KDE display settings in order that the monitor gets activated. This is a waste of time! It would be so nice if KDE would check, when I close the lid of my notebook, if an external monitor is available. In case this is the fact, KDE would activate the external monitor (or run a shell script where I could define this mechanism). Reproducible: Always A scenario example: I come home and my notebook is in the sleep state. After plugging in all wires (keyboard, mouse, monitor, ...) in my notebook (or connecting it to the docking station), I open the lid to wake it up. Short after that, I close the lid of the notebook in order that my external monitor gets alive and I can login on the external monitor screen. Only two physical interactions rather than severals (login, start display settings, configure monitor, ...).
This works thanks to the new kscreen, install it and enjoy. Thanks for reporting and sorry for the delay on replying this.