Thierry de Coulon composed on 2018-09-05 14:46 (UTC+0200):
I have a notebook that I connect to my school beamer with a HDMI cable.
In Trinity Control Center I can see both my laptop screen and the HDMI screen. I cannot use it if I don't "extend the desktop" to it, but then all my apps open stretched overt the two and control is very difficult.
I can set the external screen to the same resolution as the internal, but there is no option to just mirror the internal screen on the external.
Am I missing some black magic?
What does 'inxi -Gxx' in Konsole opened by a virgin user report? Is it the same as when run by your regular user?