When my monitor goes into sleep mode and I move the mouse the screen is still black, as I move the mouse around patch of it are drawn but screen is not refreshed properly. I have to switch desktop multiple time for screen and open windows to be shown correctly. $ kded4 --version Qt: 4.8.6 KDE Development Platform: 4.14.13 KDE Daemon: 4.14.13 This has happened multiple times but not always. Reproducible: Always
I don't see this with a fresh install of kubuntu 16.4.1