Add hint.

webpages/_layouts/vm-operator.html

@@ -73,6 +73,7 @@
         <li><p class="part-entry"><a href="auto-login.html">Auto Login</a></p></li>
         <li><p class="part-entry"><a href="pools.html">Pools</a></p></li>
         </ul>
+        <p class="part-list-title"><a href="hints.html">Hints</a></p>
         <p class="part-list-title"><a href="upgrading.html">Upgrading</a></p>
         <p class="part-list-title"><a href="https://vm-operator.jdrupes.org/javadoc/index.html">Javadoc</a></p>
 

webpages/hints.md

@@ -0,0 +1,16 @@
+---
+title: "VM-Operator: Hints — Miscellaneous hints for using VM-Operator"
+layout: vm-operator
+---
+
+# Hints
+
+## Disable suspend and hibernate
+
+Suspend and hibernate are poorly supported in VMs and usually do not
+work as expected. To disable these on systemd based systems, use the
+following command:
+
+```console
+# systemctl mask sleep.target suspend.target hibernate.target hybrid-sleep.target
+```