diff --git a/packer/ansible/roles/fablab/tasks/java.yml b/packer/ansible/roles/fablab/tasks/java.yml
index 0d156f4..3d4f4d5 100644
--- a/packer/ansible/roles/fablab/tasks/java.yml
+++ b/packer/ansible/roles/fablab/tasks/java.yml
@@ -1,5 +1,5 @@
 ---
 - name: install java
   apt:
-    name: openjdk-jre
+    name: openjdk-8-jre
     state: present
diff --git a/packer/ansible/roles/packages/tasks/debian.yml b/packer/ansible/roles/packages/tasks/debian.yml
index 3db57bd..594a187 100644
--- a/packer/ansible/roles/packages/tasks/debian.yml
+++ b/packer/ansible/roles/packages/tasks/debian.yml
@@ -12,3 +12,8 @@
     - vim-nox
     - rsync
     - grub2
+    - pciutils
+    - usbutils
+    - strace
+    - net-tools
+    - lshw
diff --git a/packer/ansible/roles/windowmanager/files/lightdm-gtk-greeter.conf b/packer/ansible/roles/windowmanager/files/lightdm-gtk-greeter.conf
deleted file mode 100644
index 8ec51bb..0000000
--- a/packer/ansible/roles/windowmanager/files/lightdm-gtk-greeter.conf
+++ /dev/null
@@ -1,64 +0,0 @@
-# LightDM GTK+ Configuration
-# Available configuration options listed below.
-#
-# Appearance:
-#  theme-name = GTK+ theme to use
-#  icon-theme-name = Icon theme to use
-#  background = Background file to use, either an image path or a color (e.g. #772953)
-#  user-background = false|true ("true" by default)  Display user background (if available)
-#  transition-duration = Length of time (in milliseconds) to transition between background images ("500" by default)
-#  transition-type = ease-in-out|linear|none  ("ease-in-out" by default)
-#
-# Fonts:
-#  font-name = Font to use
-#  xft-antialias = false|true  Whether to antialias Xft fonts
-#  xft-dpi = Resolution for Xft in dots per inch (e.g. 96)
-#  xft-hintstyle = none|slight|medium|hintfull  What degree of hinting to use
-#  xft-rgba = none|rgb|bgr|vrgb|vbgr  Type of subpixel antialiasing
-#
-# Login window:
-#  active-monitor = Monitor to display greeter window (name or number). Use #cursor value to display greeter at monitor with cursor. Can be a semicolon separated list
-#  position = x y ("50% 50%" by default)  Login window position
-#  default-user-image = Image used as default user icon, path or #icon-name
-#  hide-user-image = false|true ("false" by default)
-#
-# Panel:
-#  panel-position = top|bottom ("top" by default)
-#  clock-format = strftime-format string, e.g. %H:%M
-#  indicators = semi-colon ";" separated list of allowed indicator modules. Built-in indicators include "~a11y", "~language", "~session", "~power", "~clock", "~host", "~spacer". Unity indicators can be represented by short name (e.g. "sound", "power"), service file name, or absolute path
-#
-# Accessibility:
-#  a11y-states = states of accessibility features: "name" - save state on exit, "-name" - disabled at start (default value for unlisted), "+name" - enabled at start. Allowed names: contrast, font, keyboard, reader.
-#  keyboard = command to launch on-screen keyboard (e.g. "onboard")
-#  keyboard-position = x y[;width height] ("50%,center -0;50% 25%" by default)  Works only for "onboard"
-#  reader = command to launch screen reader (e.g. "orca")
-#
-# Security:
-#  allow-debugging = false|true ("false" by default)
-#  screensaver-timeout = Timeout (in seconds) until the screen blanks when the greeter is called as lockscreen
-#
-# Template for per-monitor configuration:
-#  [monitor: name]
-#  background = overrides default value
-#  user-background = overrides default value
-#  laptop = false|true ("false" by default) Marks monitor as laptop display
-#  transition-duration = overrides default value
-#
-[greeter]
-background=/etc/lightdm/bg.jpg
-#user-background=
-#theme-name=
-#icon-theme-name=
-font-name=Roboto
-#xft-antialias=
-#xft-dpi=
-#xft-hintstyle=
-#xft-rgba=
-hide-user-image=true
-panel-position=bottom
-#indicators=
-clock-format=%H:%M:%S
-#keyboard=
-#reader=
-#position=
-#screensaver-timeout=
diff --git a/packer/ansible/roles/windowmanager/tasks/lightdm.yml b/packer/ansible/roles/windowmanager/tasks/lightdm.yml
index dd15991..da232de 100644
--- a/packer/ansible/roles/windowmanager/tasks/lightdm.yml
+++ b/packer/ansible/roles/windowmanager/tasks/lightdm.yml
@@ -14,6 +14,29 @@
     dest: /etc/lightdm/bg.jpg
 
 - name: configure lightdm-gtk-greeter
-  copy:
-    src: lightdm-gtk-greeter.conf
-    dest: /etc/lightdm/lightdm-gtk-greeter.conf
+  ini_file:
+    path: /etc/lightdm/lightdm-gtk-greeter.conf
+    section: greeter
+    option: "{{ item.option }}"
+    value: "{{ item.value }}"
+  with_items:
+    - option: background
+      value: /etc/lightdm/bg.jpg
+    - option: font-name
+      value: Roboto
+    - option: hide-user-image
+      value: "true"
+    - option: panel-position
+      value: bottom
+    - option: clock-format
+      value: "%H:%M:%S"
+    - option: allow-guest
+      value: "true"
+    - option: greeter-allow-guest
+      value: "true"
+
+- name: get guest-account script
+  get_url:
+    url: https://raw.githubusercontent.com/CanonicalLtd/lightdm/master/debian/guest-account.sh
+    dest: /usr/local/sbin/guest-account
+    mode: 755