I'm using Fedora on a laptop with external display via VGA. (the internal one is disabled, but will open when it is booting up)
Internal 1024*400, External 1920*1080.
The resolution is normal under Xfce, but sometimes I need to use the command line interface, via control + alt + f1-7, and the terminal can not fullscreen, only occupy a corner of the screen.
xrandr, but it says "can't open display"
How can I make the terminal full screen?