Hello, On mercredi 23 janvier 2019 08:52:26 CET Kai Uwe Broulik wrote: > Hi, > > > I had thought that would only inhibit the screensaver instead of automatic > > sleep. > > KScreenLocker (previously KSMServer) that owns the > org.freedesktop.ScreenSaver interface tells PowerDevil to keep the > screen on when screensaver is inhibited. It makes no sense to prevent > the screen from locking (ie. keep the desktop visible) but then allow > the screen to turn off, having the same effect: hiding the desktop. > > I did a quick test and in case I inhibit through > > org.freedesktop.ScreenSaver interface, the battery applet does not > > indicate any inhibit whereas through > > org.freedesktop.PowerManagement.Inhibit indicates that an inhibition is > > valid. > It should and it does here. Note that PowerDevil only enforces > inhibitions after five seconds to prevent short transient inhibitions > (e.g. web browsers block suspend when playing audio which could also > lead to short notification sounds prolonging the time until suspend)
I have restarted my session and it is now working. Sorry for that. I also had somehow missed that interface. It looks to me like it is also supported by other desktop environments. Do you know if it is really the case ? > > I wonder if I should not instead make usage of the Inhibit mechanism from > > logind coupled with powerdevil. I am not sure if this is desired. > > It is and I would love that, I just haven't had the time to implement it. > > Also I'm a bit tired of adding yet another inhibition interface (we > already have like three or four of them) of the "but this time, I > promise, it will be perfect!!" kind. Last time I checked logind didn't > offer signals for when an inhibition was added/removed, so the "xyz is > curently blocking PM" in Battery Monitor might not be possible anymore > this way. > > Cheers > Kai Uwe My understanding of the current mechanism in Logind is that except the "systemctl suspend" command, nothing prevent suspend when you add an inhibitor blocking sleep. I was hoping for this interface to be the "universal" one that would avoid the need to support many interfaces in an application. As far as I understand, each software wanting to suspend has to check itself for any blocking inhibition for sleep. I can volunteer to add this to Powerdevil if this is deemed useful. I had checked the dbus interface for logind and there is still no any signals to know when an inhibition is added or removed. Best regards -- Matthieu Gallien
