On Sat, Apr 1, 2023 at 5:36 AM Marjorie Roome via Dng
<dng@???> wrote:
>
> Hi Ken,
>
> On Fri, 2023-03-31 at 20:15 -0400, Ken Dibble wrote:
>
> Having a few moments, I was going through a test Chimaera system looking
>
> for artifacts of uninstalled packages, files that should have been deleted, etc.
>
> As part of that process I happened on a process that I did not know about running.
>
> xscreensaver-systemd
>
> From the man page:
>
> The xscreensaver-systemd program is a helper daemon launched by xscreensaver(1) for systemd(1) or elogind(8) integration. It does two things:
>
> * When the system is about to go to sleep (e.g., the laptop lid has just been closed) it locks the screen just before the system sleeps, by running xscreensaver-command --suspend. When the system wakes up again, it runs xscreensaver-command --deactivate to make the unlock dialog appear immediately. It does this through the org.freedesktop.login1(5) D-Bus interface. * When another process asks for the screen saver to be inhibited (e.g. because a video is playing) this program periodically runs xscreensaver-command --deactivate to keep the display un-blanked. It does this until that other program asks for it to stop, or exits. It does this through the org.freedesktop.ScreenSaver(5), org.gnome.SessionManager(5) and org.kde.Solid.PowerManagement.PolicyAgent(5) D-Bus interfaces.
>
> According to elogind's github page:
>
> elogind is the systemd project's "logind", extracted to be a standalone daemon
>
> My understanding of the documentation is that communication with elogind should be through the
>
> D-Bus interface.
>
> My questions, which I am sure that I will not be able to understand the answer to, are
>
> Why do we have something that looks like it belongs to systemd running?
>
> Why do we need to have a separate daemon just to put something on the DBus interface?
>
> You don't need to use xscreensaver-systemd to achieve a screenlock on resume from sleep.
> You can still do it using pmtools to suspend/resume by including an appropriate script in /etc/pm/sleep.d/
>
> I have this script: 999password-protect-waking
>
> #!/bin/sh
>
> # This script requires a user login when returning from
> # a suspended or hibernated state
>
> . "${PM_FUNCTIONS}"
>
> case "$1" in
> resume|thaw)
> sudo -u $SUDO_USER /usr/bin/cinnamon-screensaver-command -a
> ;;
> suspend|hibernate)
> sudo -u $SUDO_USER /usr/bin/cinnamon-screensaver-command -d
> ;;
> esac
>
> Albeit I use a different screensaver.
>

Please - - - - what screensaver?

TIA