Hi guys, i've been running Fedora 27 KDE on my Lenovo Ideapad without any problems for the past weeks, so i decided to install it also on my desktop. Everything all right, but the application launcher/application menu isn't showing most of the times. Some of the times it opens no problem, other times it opens for a fraction of a second then it closes itself. I've seen an ACPI error warning when the system boots, but i doubt this is the problem. I'm stuck with the fullscreen application Dashboard (the only application widget which works) but i don't like it very much.

System details:
CPU: i5 2500k
GPU: GTX 680 (With Force Composition Pipeline enabled for the tearing)
KDE Plasma Version: 5.11.3
KDE Framework Version: 5.40.0

Thanks for the support!