Programatic control "Screen Energy Saving" dbus??

[rec9140]

I am looking to add some controls to a startup script for a program that will

DISABLE Screen Energy Saving when the program starts
RE-ENABLE Screen Energy Saving when the sprogram shutsdown.

dbus

via qdbus org.freedesktop.PowerManagement ?

I am not a dbus guru, and what I am finding in searches is well, not really outlining how to use this to DISABLE/RE-ENABLE this as I want..

Basically the BASH script would

qdbus org.freedesktop.PowerManagement (DISABLE SCREEN ENERGY SAVING)
/me/program/Program
qdbus org.freedesktop.PowerManagement (RE-ENABLE SCREEN ENERGY SAVING)

I don't mind the screen dimming, whille this runs, but manually changing this setting each time is well so wrong.

Any pointers to do this? dbus? Something else?

Thanks!

[jlittle]

(I presume you know about exploring the dbus with qdbus.)

Perhaps

qdbus org.freedesktop.ScreenSaver /org/freedesktop/ScreenSaver org.freedesktop.ScreenSaver.Inhibit "my purpose" "my reason"  
12482
# sometime later
qdbus org.freedesktop.ScreenSaver /org/freedesktop/ScreenSaver org.freedesktop.ScreenSaver.UnInhibit 12482

I didn't check whether that had any effect.

[rec9140]

(I presume you know about exploring the dbus with qdbus.).

Umm... "I am not a dbus guru," so, Nope.

Perhaps

qdbus org.freedesktop.ScreenSaver /org/freedesktop/ScreenSaver org.freedesktop.ScreenSaver.Inhibit "my purpose" "my reason"
12482
# sometime later
qdbus org.freedesktop.ScreenSaver /org/freedesktop/ScreenSaver org.freedesktop.ScreenSaver.UnInhibit 12482

I didn't check whether that had any effect.

Thanks I will look at that to see.

What I am looking for is something that explains..

ie: here is a list of settings available via dbus, and an index which has "Screen Energy Saving" and there are the settings for on/off.

Simple easy peasy stuff spell it out. Don't be like ALSA which has documentation like you are some how the creator of all sounds of the universe.

[jlittle]

I said

I presume you know about exploring the dbus with qdbus.

Umm... "I am not a dbus guru," so, Nope.

I imagine very few people are dbus gurus, I certainly am not, but anyone one can explore. I'll relate the process I went through.

One can start, in a konsole, by running just qdbus. That lists all the services listening on the dbus. Then one picks a service that might be what you want, and runs qdbus giving that service; in this case I thought org.freedesktop.ScreenSaver might be interesting, so I ran

qdbus org.freedesktop.ScreenSaver

That lists the "paths" that service supports; the most interesting one is often similar to the service, with "/" separators instead of ".". So then I ran

qdbus org.freedesktop.ScreenSaver /org/freedesktop/ScreenSaver

That lists the methods for that service and path, and gives some idea of the parameters each service might take. The Inhibit method output a number when I ran it, and the UnInhibit method takes a "uint cookie" (presumably a uint is an unsigned integer), so I guessed the number output is the cookie I should use.

Rather than the command line tool qdbus, one can use the GUI qdbusviewer (in the APT package qttools5-dev-tools). Point and click, but its listing of the methods doesn't show the parameters until you click on the method, so I find it slower to work with.