Hi,

using the latest plasma 5.25.5 with openSUSE Tumbleweed. I've added CPU Usage widget to desktop and change display type to Line Chart.
I can see in ~/.config/plasma-org.kde.plasma.desktop-appletsrc

Code: Select all

[Containments][28][Applets][35][Configuration][Appearance]
chartFace=org.kde.ksysguard.linechart
showTitle=false
title=Total CPU Use


But when I logout/login widget switched to use default Pie Chart style and also ~/.config/plasma-org.kde.plasma.desktop-appletsrc contains:

Code: Select all

[Containments][28][Applets][35][Configuration][Appearance]
chartFace=org.kde.ksysguard.piechart
showTitle=false
title=Total CPU Use


I reported that in Bug 454004, and for me it was fixed in Plasma 5.25.5