Table of Contents
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Screen resolution
The p stands for progressive scan, non interlaced. Pixels are counted vertically
The K stands for kilo = 1000. Pixels are counted horizontally
| Name | K | p | Resolution | Remark |
|---|---|---|---|---|
| UHD | 4k | 2160p | 3840 × 2160 | Cinema uses DCI 4k 4096 × 2160 |
| 2k | 2048 × 1080 | |||
| QHD | 1440p | 2560 × 1440 | Quad High Defenition | |
| WUXGA | 1920 × 1200 | Widescreen Ultra Extended Graphics Array | ||
| FHD | 1080p | 1920 × 1080 | Full High Defenition | |
| SXGA | 1280 × 1024 | Super Extended Graphics Array | ||
| XGA | 1024 × 768 | Extended Graphics Array | ||
| HD | 720p | 1280 × 720 | High Defenition | |
| SVGA | 800 × 600 | Super Video Graphics Array | ||
| VGA | 640 × 480 | Video Graphics Array | ||
| 480p | ||||
| 360p | ||||
| QVGA | 320 × 240 | Quarter Video Graphics Array | ||
| 240p | ||||
| 144p | ||||
Files
/var/log/Xorg.0.log
Use full links
To have installed
xbase-clients
Which contains xrandr
Get going
Make sure the monitor can handle that resolution. The monitor can get damaged if it can not handle the resolution and you set it to that resolution
Login as root
# xrandr
Output example
Screen 0: minimum 320 x 200, current 1024 x 768, maximum 4096 x 4096 VGA-1 connected 1024x768+0+0 (normal left inverted right x axis y axis) 0mm x 0mm 1024x768 60.0* 800x600 60.3 56.2 848x480 60.0 640x480 59.9 HDMI-1 disconnected (normal left inverted right x axis y axis)
Remember VGA-1 or whatever is in its place
A B is the desired resolution
# cvt A B
The output. The # is in the output, it is not a prompt:
# 1440x900 59.89 Hz (CVT 1.30MA) hsync: 55.93 kHz; pclk: 106.50 MHz Modeline "1440x900_60.00" 106.50 1440 1528 1672 1904 900 903 909 934 -hsync +vsync
Run, where “1440×900“ is the desired resolution and 106.50 1440 1528 1672 1904 900 903 909 934 -hsync +vsync the needed part from the cvt command you just ran
# xrandr --newmode "1440x900" 106.50 1440 1528 1672 1904 900 903 909 934 -hsync +vsync
Run, where VGA-1 is the value you had to remember and 1440×900 is the desired resolution
# xrandr --addmode VGA-1 1440x900 # xrandr --output VGA-1 --mode 1440x900
Now the screen should go to 1440×900. It might go black while doing that
Second screen
secondscreen=$(xrandr -q | grep " connected" | sed -n '2 p' | cut -f 1 -d ' '); [ "$secondscreen" ] && xrandr --output $secondscreen --gamma 0.6:0.75:1
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