35 lines
654 B
Bash
35 lines
654 B
Bash
#!/bin/bash
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# Check if AMD or NVIDIA GPU is connected
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BrPath=
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for Dir in /sys/class/backlight/amdgpu_*
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do
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if [ -d "$Dir" ]
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then
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BrPath="$Dir"
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break
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fi
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done
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if [ -d "$BrPath" ]
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then
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:
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# echo "Found AMD GPU folder $BrPath"
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else
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BrPath=/sys/class/backlight/nvidia_0
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# echo "Didn't find AMD GPU, defaulting to $BrPath"
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fi
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# Step brightness by 10%
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BrCur=$(cat $BrPath/brightness)
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BrMax=$(cat $BrPath/max_brightness)
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BrStep=$(($BrMax/10))
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if [ "$(($BrCur - $BrStep))" -lt "$BrStep" ]
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then
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echo "$BrStep" > "${BrPath}/brightness"
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else
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BrCur=$(($BrCur-$BrStep))
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echo "$BrCur" > "${BrPath}/brightness"
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fi
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