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xrandr --newmode "1920x1080_60.00" 172.8 1920 2040 2248 2576 1080 1081 1084 1118 -HSync +VSync
xrandr --addmode DP-1 1920x1080_60.00
xrandr --output DP-1 --mode 1920x1080_60.00
and then fight with chinese box for monitor to be recognized and activated.
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