61 lines
1.5 KiB
Bash
61 lines
1.5 KiB
Bash
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#!/bin/bash
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# This script attempts to set a known-good mode on a good output
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function contains() {
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local n=$#
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local value=${!n}
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for ((i=1;i < $#;i++)) {
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if [ "${!i}" == "${value}" ]; then
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echo "y"
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return 0
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fi
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}
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echo "n"
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return 1
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}
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GOODMODES=("1920x1080" "1280x720")
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GOODRATES=("60.0" "59.9") # CEA modes guarantee or one the other, but not both?
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# First, some logging
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date
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xrandr --verbose
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# Improve this later to prioritize HDMI/DP over LVDS; for now, use first output
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OUTPUT_NAME=`xrandr | grep ' connected' | head -n1 | cut -f1 -d' '`
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ALL_OUTPUT_NAMES=`xrandr | grep ' connected' | cut -f1 -d' '`
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# Disable everything but the first output
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for i in $ALL_OUTPUT_NAMES; do
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if [ "$i" != "$OUTPUT_NAME" ]; then
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xrandr --output "$i" --off
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fi
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done
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CURRENT_MODELINE=`xrandr | grep \* | tr -s ' ' | head -n1`
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CURRENT_MODE=`echo "$CURRENT_MODELINE" | cut -d' ' -f2`
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CURRENT_RATE=`echo "$CURRENT_MODELINE" | tr ' ' '\n' | grep \* | tr -d \* | tr -d +`
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# If the current mode is already deemed good, we're good, exit
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if [ $(contains "${GOODMODES[@]}" "$CURRENT_MODE") == "y" ]; then
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if [ $(contains "${GOODRATES[@]}" "$CURRENT_RATE") == "y" ]; then
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exit 0
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fi
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fi
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# Otherwise try to set combinations of good modes/rates until it works
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for goodmode in "${GOODMODES[@]}"; do
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for goodrate in "${GOODRATES[@]}"; do
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xrandr --output "$OUTPUT_NAME" --mode "$goodmode" --refresh "$goodrate"
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# If good return, we're done
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if [[ $? -eq 0 ]]; then
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exit 0
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fi
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done
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done
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exit 1
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