yes, this on/off button on the upper left corner in Jivelite. And yes, the RPI display plugin is installed.
The button in Webif changes, when triggered on the display.
But i could not reproduce this error this time. Probably it’s a matter of time.
One thing is changed, since i saw this problem: i have the LMS installation on a separate Pi now.
I will test it again when i have more time.