Screensaver inhibition does not inhibit powermanagment
Applications that for instance play video want to inhibit the screensaver. They use org.freedesktop.ScreenSaver's inhibit for that. But it seems that XFCE also supports org.freedesktop.PowerManagement.Inhibit, which seems to have been marked obsolete (see https://www.freedesktop.org/wiki/Specifications/power-management-spec/), the documentation doesn't even seem to exist anymore, and XFCE seems to be the only one implementing it. Inhibiting the screensaver does not seem to be enough to inhibit the powermanagement from turning off the screen. Is it possible that on calling org.freedesktop.ScreenSaver's inhibit, org.freedesktop.PowerManagement.Inhibit's inhibit is also called?