my tv is a 32" sony bravia but on arch it is detected as a 72"
xrandr output:
Screen 0: minimum 320 x 200, current 2726 x 768, maximum 4096 x 4096
LVDS-1 connected primary 1366x768+0+0 (normal left inverted right x axis y axis) 0mm x 0mm
1366x768 60.00*
HDMI-1 connected 1360x768+1366+0 (normal left inverted right x axis y axis) 1600mm x 900mm
1360x768 60.02*+
1920x1080 60.00 30.00 24.00 23.98 29.97
1920x1080i 60.00 59.94
1280x720 30.00 60.00 59.94 29.97
1024x768 60.00
800x600 60.32
720x480 60.00 59.94
640x480 60.00
and the display is like this:
https://imgur.com/a/M6TyN
also, device is samsung chromebook 2012 model xe303c12
https://archlinuxarm.org/platforms/armv7/samsung/samsung-chromebook