How to change screen resolutions while in X-Windows

xrandr is a program that allows you to adjust screen resolutions for your monitor.


 * option 1: Set to a specified resolution
 * execute: xrandr -s 800x600

$ xrandr --verbose SZ:   Pixels          Physical       Refresh 1  1400 x 1050   ( 542mm x 406mm )   60 2  1280 x 1024   ( 542mm x 406mm )   70 3  1280 x 960    ( 542mm x 406mm )   60 4  1152 x 864    ( 542mm x 406mm )   75 5  1152 x 768    ( 542mm x 406mm )   55 6   832 x 624    ( 542mm x 406mm )   75 7   800 x 600    ( 542mm x 406mm )   75 8   700 x 525    ( 542mm x 406mm )   60 9   640 x 512    ( 542mm x 406mm )   60 10  640 x 480    ( 542mm x 406mm )   85   75   73   60
 * Option 2: Set to a preset resolution (Recommended)
 * Execute: xrandr—verbose
 * to see all the possible modes
 * Example
 * 0  1600 x 1200   ( 542mm x 406mm )  *60
 * Execute: xrandr -s 7
 * for 800x600 @ 75Hz (in this example)

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