54 lines
2.4 KiB
Bash
54 lines
2.4 KiB
Bash
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#!/bin/bash
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# https://gist.github.com/anthonyaxenov/c16e1181d4b8a8644c57ec8a1f6cf21c
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#########################################################################
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# #
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# Set display resolution #
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# #
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# Author: Anthony Axenov (Антон Аксенов) #
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# Version: 1.0 #
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# License: WTFPL #
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# #
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#########################################################################
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# #
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# Using this script you can change your display resolution #
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# to any one you need. Just adjust some vars below and run script #
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# (chmod +x needed). #
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# #
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#########################################################################
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# Set display name to work with. You can get it via 'xrandr --listactivemonitors'
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display="HDMI-2"
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# Set width of this display in px
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width=1600
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# Set height of this display in px
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height=900
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# Sometimes cvt and gtf generates different modelines.
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# You can play around and look which of them gives best result:
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modeline=$(cvt ${width} ${height} | grep "Modeline")
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# modeline=$(gtf ${width} ${height} 60 | grep "Modeline")
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# Some important data needed to xrandr:
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modename="${width}x${height}_my"
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params=$(echo "$modeline" | sed "s|^\s*Modeline\s*\"[0-9x_.]*\"\s*||")
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echo "Set resolution ${width}x${height} on display $display:"
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echo "$modename $params"
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# Simple logic:
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# 1. Switch display to safe mode which always exists (I believe) to avoid errors
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xrandr --output $display --mode 640x480
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# 2. If display aready have our mode -- we must delete it to avoid errors
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if $(xrandr | grep -q "$modename"); then
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# 2.1. Detach mode from display
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xrandr --delmode $display $modename
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# 2.2. Remove mode itself
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xrandr --rmmode $modename
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fi
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# 3. Create new mode with freshly generated parameters
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xrandr --newmode $modename $params
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# 4. Attach mode to our display
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xrandr --addmode $display $modename
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# 5. Switch display to this mode immidiately
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xrandr --output $display --mode $modename
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