#!/bin/bash

WORKS=
FAILS=

for i in $(seq 100); do
	sudo sh -c "echo modeset $i start > /dev/kmsg"

	for output in $(xrandr | grep -o ^DP[A-Z0-9-]*); do
		xrandr --output $output --off
	done
	sleep 1
	xrandr --auto
	sleep 1
	read -n 1 -rsp "works? (y/N) "
	echo
	if [[ $REPLY =~ ^[Yy]$ ]]; then
		sudo sh -c "echo modeset $i result: works > /dev/kmsg"
		echo "modeset $i works:" >> xrandr.log
		WORKS=1
	else
		sudo sh -c "echo modeset $i result: fails > /dev/kmsg"
		echo "modeset $i fails:" >> xrandr.log
		FAILS=1
	fi
	xrandr --verbose  >> xrandr.log

	if [[ -n "$WORKS" && -n "$FAILS" ]]; then
		break
	fi
done
sudo dmesg >> dmesg.log