Bug#1089745: gnome-settings-daemon: screen-lock shortcut does not work without 'gjs' package installed

[James Addison]

Package: gnome-settings-daemon
Version: 47.2-1
Severity: normal

Dear Maintainer,

Recently I uninstalled the 'gjs'[1] package since it did not appear to be
required for functionality in the GNOME desktop environment I have installed.

However, I later discovered that without 'gjs' installed, screen locking using
a keyboard shortcut (default meta+L) ceased to function.  I don't yet know
precisely why that began failing without gjs installed, but I thought it would
be worth reporting.

Perhaps this is not strictly a bug: functionality for most of GNOME does not
depend on gjs, and there is a message bus in-between the relevant components.

I discovered the fix thanks to a comment[1] on an Ubuntu Launchpad bugthread
describing the error that appeared at the dbus layer: an inability to invoke a
program for a org.gnome.ScreenSaver handler event.

Regards,
James

[1] - https://bugs.launchpad.net/ubuntu/+source/gnome-settings-daemon/+bug/1971434/comments/10