I was trying xfce for the first time a few days ago and noticed that the suspension function wasn't working. I assumed something was happening between xfce and consolekit2 and after a bit of digging I found that [**this**](https://gitlab.xfce.org/xfce/xfce4-session/-/blob/master/xfce4-session/xfsm-consolekit.c#L306) line was the problem. If it's changed to `g_variant_new ("(b)", TRUE),` suspend (and by extension, hibernation) will work again. I've no idea why the current version doesn't work, it looks like it does the same thing.