I have a problem in Kubuntu 17.04 when I resume my laptop Dell Precision 3510.
Its display has 1920x1080 and my external monitor has 1920x1200.
When I resume the laptop, the lock screen is shown and then when I plug in the monitor I am neither able to see the writing cursor nor written characters.
If I then unplug the monitor it gets fixed and I can see the previously written characters.
Is there an issue for it?