gnome-control-center: hibernation vs suspend when energy is low

[Gautier Pelloux-Prayer <gautier damsy net>]

Hi,

In gnome-control-center application, one can configure its laptop to go in suspend mode when Energy goes very low. However this is only possible when laptop supports Hibernation, as cc-power-panel.c:1945 queries DBus:

  result = g_dbus_connection_call_sync (connection,

                                        "org.freedesktop.login1",

                                        "/org/freedesktop/login1",

                                        "org.freedesktop.login1.Manager",

                                        "CanHibernate",

                                        NULL,

                                        NULL,

                                        G_DBUS_CALL_FLAGS_NONE,

                                        -1,

                                        NULL,

                                        NULL);

Instead of asking for "CanHibernate", should not it be asking for "CanSuspend" feature (or both?). In my personal case, I do not have any SWAP so hibernation is not available, but suspend is:

$ qdbus --system --literal org.freedesktop.login1 /org/freedesktop/login1 org.freedesktop.login1.Manager.CanHibernate

"na"

$ qdbus --system --literal org.freedesktop.login1 /org/freedesktop/login1 org.freedesktop.login1.Manager.CanSuspend

"yes"

I would like to suspend computer instead of shutting it down when Energy is critical. Is it the right place to discuss about it, or should I ask somewhere else?

Thanks!