#!/bin/bash

startcount=0
failcount=0

while /bin/true ; do
	# this will try dual-head if two heads are found, 
	# and fall back to single-head; if X keeps crashing,
	# then bail out and let init temporarily disable
	# autologin
	startcount=$((startcount+1))
	/opt/bin/xinit-wrapper /opt/bin/kiosk.xinit || {
		# in case X crashes forever, it should be at least stoppable
		failcount=$((failcount+1))
		chvt 1
		echo >/dev/tty1
		echo "Graphics subsystem failed to start," >/dev/tty1
		echo "re-trying in 10 seconds... (attempt $failcount)" >/dev/tty1
		echo >/dev/tty1
		sleep 10
	}
	# falling back to vesa, reboot needed to 
	# re-autodetect proper driver from now on
	[ "$failcount" -gt 2 ] && {
		x11setupdrv -s vesa
		xinit /opt/bin/kiosk.xinit
	}
	[ "$failcount" -gt 3 ] && {
		chvt 1
		echo >/dev/tty1
		echo "Graphics subsystem seems broken" >/dev/tty1
		echo "Call Technical Support" >/dev/tty1
		echo >/dev/tty1
		sleep 60
		exit 1
	}
done