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Changing Display Configuration using xrandr

Changing Display Configuration using xrandr

  1. 1.
    To list available displays
    xrandr -q
    Sample output
    Screen 0: minimum 320 x 200, current 2560 x 1080, maximum 16384 x 16384
eDP connected primary 1920x1080+0+0 (normal left inverted right x axis y axis) 309mm x 173mm 1920x1080 60.01*+ 1680x1050 60.01 1280x1024 60.01 1440x900 60.01 1280x800 60.01 1280x720 60.01 1024x768 60.01 800x600 60.01 640x480 60.01 HDMI-A-0 connected 640x480+1920+0 (normal left inverted right x axis y axis) 0mm x 0mm 640x480 59.94* 1920x1080 60.01 1680x1050 60.01 DisplayPort-0 disconnected (normal left inverted right x axis y axis)
2. Add new resolution mode to display X
xrandr --addmode X 1280x1024
3. Use newly added mode
xrandr --auto --output X --mode 1280x1024
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## Find mode Configuration
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1. Using `gtf`
gtf 1920 1080 60
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Sample output
# 1920x1080 @ 60.00 Hz (GTF) hsync: 67.08 kHz; pclk: 172.80 MHz
Modeline "1920x1080_60.00" 172.80 1920 2040 2248 2576 1080 1081 1084 1118 -HSync +Vsync
2. Using `cvt`
cvt 800 600
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Sample output

800x600 59.86 Hz (CVT 0.48M3) hsync: 37.35 kHz; pclk: 38.25 MHz

Modeline "800x600_60.00" 38.25 800 832 912 1024 600 603 607 624 -hsync +vsync
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