I am using the i3 window manager on a laptop with a broken internal LCD display. It will not fill the dimensions of the external monitor. I have so far tried using xrandr
auto-detection:
xrandr --output HDMI1 --auto
and specifying my monitor's resolution in xrandr:
xrandr --output HDMI1 --mode 1680x1050
Neither works. Any solution would be much appreciated.