Hello, On Wed, 24 Feb 2010 00:06:18 +0100, Lubos Lunak <[email protected]> wrote: > On Thursday 18 of February 2010, Ali Abdallah wrote: >> So why not having a standard API on a name >> org.freedesktop.SessionManager with >> two methods InhibitSleep > >> InhibitDPMS > > XResetScreenSaver() . There's no need to reinvent that wheel.
There are several problems with that old API. First, it can only reset, not inhibit/uninhibit. This might not be a problem for a media player. It might just call XResetScreenSaver() every so often. It won't require any extra timer ot CPU wakeup because it's playing a movie anyway. But at the other hand, how do you expect the power manager to be notified of anything? As far as I can tell, it cannot, so it would have to poll all the time. And that's a counter-productive to power saving. Second, the inhibiting software needs to know the reset frequency. Either it has to make a pessimistic (i.e. short timeout) guess, which is inefficient. Or then it has to retrieved the value from the system. But that introduces a bug if the value is modified after it was retrieved. I would agree that X11 would be a more logical "carrier" for screen-saving and DPMS signaling than D-Bus or shell commands (xdg-utils). But the current X11 API is insufficient. Maybe you want to update the X11 spec and implementation. Otherwise, yes there *is* a need to invent the wheel, because the existing wheel is square-shaped. -- Rémi Denis-Courmont http://www.remlab.net http://fi.linkedin.com/in/remidenis _______________________________________________ xdg mailing list [email protected] http://lists.freedesktop.org/mailman/listinfo/xdg
