We get a question every now and then about why hibernation works when suspend-to-disk is disabled and similar. Let's hope that, by documenting the obvious more blatantly, people will get more informed. Signed-off-by: Martin Kletzander <mkletzan(a)redhat.com&gt; --- docs/formatdomain.html.in | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-) diff --git a/docs/formatdomain.html.in b/docs/formatdomain.html.in index 5bdcb569c4c0..5dcf2fedb01c 100644 --- a/docs/formatdomain.html.in +++ b/docs/formatdomain.html.in @@ -1664,7 +1664,11 @@ <dd>These elements enable ('yes') or disable ('no') BIOS support for S3 (suspend-to-mem) and S4 (suspend-to-disk) ACPI sleep states. If nothing is specified, then the hypervisor will be - left with its default value.</dd> + left with its default value.<br/> + Note: This setting cannot prevent the guest OS from performing + a suspend as the guest OS itself can choose to circumvent the + unavailability of the sleep states (e.g. S4 by turning off + completely).</dd> </dl> <h3><a id="elementsFeatures">Hypervisor features</a></h3> -- 2.14.2