[mythtv-users] Mythtv screensaver behaviour

[Lawrence Rust]

On Sun, 2015-12-27 at 13:30 +1300, HP-mini wrote:
> On Sat, 2015-12-26 at 17:49 +0100, Jonatan Lindblad wrote:
> > 
> > Den 2015-12-26 kl. 01:15, skrev Another Sillyname:
> > > On 25 December 2015 at 23:38, Jonatan Lindblad <mythtv at comhem.se> wrote:
> > >> Den 2015-12-25 kl. 23:34, skrev Another Sillyname:
> > >>> Happy Holidays all!!
> > >>>
> 
> > The version is new enough, but DBus might not be enabled in the build.
> > This information is also included in the output from mythfrontend
> > --version.  It should contain using_qtdbus if it is enabled.
> > 
> 
> That still might not be enough.. I have qtdbus enabled in master build
> but logs show "ScreenSaverDBus: Could not connect to dbus: " etc and so
> mate desktop screensaver does not inhibit during playback. Could this be
> dbus namespace problem?
> 
> The xscreensaver works correctly.

I also note that on my Ubuntu 12.04 LTS based BE/FE the recent patches
to fixes/0.27 to use the DBus based screensaver inhibit have no effect
although the system suspend inhibit does work.  E.g.:

2015-12-27 09:24:56.479151 W  ScreenSaverDBus: Could not connect to dbus: The name org.freedesktop.ScreenSaver was not provided by any .service files
2015-12-27 09:24:56.479690 W  ScreenSaverDBus: Could not connect to dbus: The name org.freedesktop.PowerManagement.Inhibit was not provided by any .service files
2015-12-27 09:24:56.480211 W  ScreenSaverDBus: Could not connect to dbus: The name org.mate.SessionManager was not provided by any .service files
2015-12-27 09:24:56.482108 I  ScreenSaverDBus: Created for DBus service: org.gnome.SessionManager

I ran foul of similar problems a couple of years ago after this patch
was added to 0.27: "5e13d41 Remove support for GNOME screensaver".

I have a combined BE/FE that runs 0.27 on Ubuntu 12.04 LTS and has
xscreensaver installed to display a slideshow while idle.  Prior to that
patch I was using a wrapper around the gnome-screensaver-command that
trapped the obsolete --poke option.  I had this
in /usr/local/bin/gnome-screensaver-command:

#!/bin/sh
set -e

Poke() {
    dbus-send --session --dest=org.gnome.ScreenSaver --type=method_call\
        /org/gnome/ScreenSaver org.gnome.ScreenSaver.SimulateUserActivity
}

case "${1:-}" in
    --poke) Poke ;;
    *) /usr/bin/gnome-screensaver-command "$@" ;;
esac

Following the removal of support for Gnome screensaver I wrote my own
patch that replaced the "gnome-screensaver-command --poke" call with a
call to "dbus-send...".  This restored the behaviour that you are
seeking.

If you are interested, the patch is named
"0171-Screensaver-Add-DB-settings-for-the-detection-and-de.patch"
and is available in my MythTV patch archive:
http://www.softsystem.co.uk/download/mythtv/mythbuild-CURRENT.zip

If necessary, you can configure the system command issued to disable the
Gnome screensaver from 'TV settings/Playback/General Playback/

HTH

-- Lawrence Rust