xrandr
returns:
Screen 0: minimum 8 x 8, current 3440 x 1440, maximum 32767 x 32767 DVI-D-0 disconnected (normal left inverted right x axis y axis) HDMI-0 disconnected (normal left inverted right x axis y axis) DP-0 connected primary 3440x1440+0+0 (normal left inverted right x axis y axis) 819mm x 346mm 3440x1440 99.98*+ 84.96 74.98 59.97 1920x1080 60.00 59.94 50.00 1680x1050 59.95 1440x900 59.89 1440x576 50.00 1440x480 59.94 1280x1024 75.02 60.02 1280x960 60.00 1280x720 60.00 59.94 50.00 1152x864 75.00 1024x768 75.03 70.07 60.00 800x600 75.00 72.19 60.32 56.25 720x576 50.00 720x480 59.94 640x480 75.00 72.81 59.94 59.93 DP-1 disconnected (normal left inverted right x axis y axis)
$HOME/.local/share/xorg/Xorg.0.log