Starting script to set monitor configuration

Morning all, I am trying to run a little script on startup I wrote to configure my desktop if the VGA1 output is connected (which it is). Running BunsenLabs-Hydrogen (Debian based). Script: #!/bin/bash ### BEGIN INIT INFO # Provides: resVGA1 # Required-Start: # Required-Stop: # Default-Start: 2 3 4 5 # Default-Stop: 0 1 6 # Short-Description: Setup xrandr with VGA1 # Description: Setup Multi-screen resolution with VGA1 connected ### END INIT INFO if xrandr | grep "VGA1 connected"; then xrandr -s 1366x768 #As it doesn't default to this with VGA1 connected xrandr --auto #To populate the second screen xrandr --output VGA1 --right-of LVDS1 #Right of VGA1, not duplicate fi I've made the script executable and it works when called, then placed it in /etc/init.d/ and ran: update-rc.d resVGA1 defaults The output of "ls -l /etc/rc?.d/*resVGA*" is: lrwxrwxrwx 1 root root 17 Dec 19 12:33 /etc/rc0.d/K01resVGA1 -> ../init.d/resVGA1 lrwxrwxrwx 1 root root 17 Dec 19 12:33 /etc/rc1.d/K01resVGA1 -> ../init.d/resVGA1 lrwxrwxrwx 1 root root 17 Dec 19 12:33 /etc/rc2.d/S01resVGA1 -> ../init.d/resVGA1 lrwxrwxrwx 1 root root 17 Dec 19 12:33 /etc/rc3.d/S01resVGA1 -> ../init.d/resVGA1 lrwxrwxrwx 1 root root 17 Dec 19 12:33 /etc/rc4.d/S01resVGA1 -> ../init.d/resVGA1 lrwxrwxrwx 1 root root 17 Dec 19 12:33 /etc/rc5.d/S01resVGA1 -> ../init.d/resVGA1 lrwxrwxrwx 1 root root 17 Dec 19 12:33 /etc/rc6.d/K01resVGA1 -> ../init.d/resVGA1 So to my knowledge this should work on startup, but it doesn't - I checked /var/log/syslog and found the following reports: Dec 19 12:33:46 DankPad resVGA1: Can't open display Dec 19 12:33:46 DankPad kernel: [ 0.244129] ACPI: bus type PNP unregistered Dec 19 12:33:46 DankPad kernel: [ 0.250523] pci 0000:00:1c.0: PCI bridge to [bus 02] Dec 19 12:33:46 DankPad systemd: Started LSB: Setup xrandr with VGA1. Dec 19 12:33:46 DankPad kernel: [ 0.250541] pci 0000:00:1c.1: PCI bridge to [bus 03] Dec 19 12:33:46 DankPad kernel: [ 0.250548] pci 0000:00:1c.1: bridge window [mem 0xf2400000-0xf24fffff] Dec 19 12:33:46 DankPad kernel: [ 0.250560] pci 0000:00:1c.3: PCI bridge to [bus 05-0c] Am I doing something wrong or just fundamentally misunderstanding what I'm trying to do? Any help would be appreciated.