xrandr Screen 0: minimum 320 x 200, current 1366 x 768, maximum 32767 x 32767 LVDS1 connected 1366x768+0+0 (normal left inverted right x axis y axis) 256mm x 144mm 1366x768 60.0*+ 1024x768 60.0 800x600 60.3 56.2 640x480 59.9 VGA1 disconnected (normal left inverted right x axis y axis) HDMI1 disconnected (normal left inverted right x axis y axis) DP1 disconnected (normal left inverted right x axis y axis)So here is an example to downsample from 4k to 1366x768 (native). See "man xrandr" for an explanation of xrandr and its options. This works with Nvida Optimus (bumblebee) & Steam (tested)
xrandr --fb 4098x2304 --output LVDS1 --scale 3x3 --panning 4098x2304
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