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#!/bin/sh
# requires: xrandr, awk
err() {
printf "%s\n" "$*" >&2
exit 1
}
for cmd in xrandr awk; do
command -v "$cmd" >/dev/null 2>&1 || err "required command not found: $cmd"
done
# collect all connected outputs
outputs=$(xrandr --query | awk '/ connected/ { print $1 }')
[ -n "$outputs" ] || err "no connected outputs found."
# sample TearFree state from the first connected output
first_output=$(printf '%s\n' "$outputs" | awk 'NR==1')
current_state=$(xrandr --props | awk -v out="$first_output" '
$1 == out { found=1 }
found && /TearFree:/ { print $2; exit }
')
case "$current_state" in
on) new_state="off" ;;
*) new_state="on" ;;
esac
# single xrandr invocation, avoids monitor reconfiguration for the most part
xrandr_args=""
for output in $outputs; do
xrandr_args="$xrandr_args --output $output --set TearFree $new_state"
done
# shellcheck disable=SC2086
xrandr $xrandr_args || err "failed to set TearFree $new_state on all outputs"
notify-send "AMDGPU (X11)" "TearFree $new_state" -t 3072 \
|| printf "TearFree toggled to '%s' on all connected outputs.\n" "$new_state"
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