commit 8c9f0d8e594667816bb26ae362e821fc015984ce
Author: Markus Brechtel <markus.brechtel+kita-pro@thengo.net>
Date:   Fri Sep 28 12:29:23 2018 +0200

    maintenance

diff --git a/tasks/ac-power.yaml b/tasks/ac-power.yaml
new file mode 100644
index 0000000..3ef125e
--- /dev/null
+++ b/tasks/ac-power.yaml
@@ -0,0 +1,10 @@
+---
+
+- name: ensure acpi tool is installed
+  apt:
+    pkg: acpi
+- name: ensure host is on AC power
+  command: acpi -a
+  register: _acpi_ac_adapter
+  failed_when: '"off-line" in _acpi_ac_adapter.stdout'
+  changed_when: false
diff --git a/tasks/main.yaml b/tasks/main.yaml
new file mode 100644
index 0000000..255611c
--- /dev/null
+++ b/tasks/main.yaml
@@ -0,0 +1,8 @@
+---
+
+- import_tasks: ac-power.yaml
+
+- import_role:
+    name: display_manager
+  vars:
+    display_manager_state: maintenance