56 lines
2.6 KiB
Bash
Executable File
56 lines
2.6 KiB
Bash
Executable File
#!/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 output 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: WTFPLv2 #
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# #
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#########################################################################
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# #
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# Using this script you can change your output 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 output name to work with. You can get it via 'xrandr --listactivemonitors'
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output="HDMI-3"
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# Set width of this output in px
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width=1920
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# Set height of this output in px
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height=1080
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# Set refresh rate in Hz of this output in px
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refresh=120
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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} ${refresh} | grep "Modeline")
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# modeline=$(gtf ${width} ${height} ${refresh} | grep "Modeline")
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# Some important data needed to xrandr:
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modename="${width}x${height}@${refresh}_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}@${refresh} on output $output:"
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echo "$modename $params"
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# Simple logic:
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# 1. Switch output to safe mode which always exists (I believe) to avoid errors
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xrandr --output $output --mode 640x480 --verbose
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# 2. If output 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 output
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xrandr --delmode $output $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 --verbose
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# 4. Attach mode to our output
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xrandr --addmode $output $modename --verbose
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# 5. Switch output to this mode immidiately
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xrandr --output $output --mode $modename --refresh $refresh --verbose
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