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session-management: mention dbus-update-activation-environment #626

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8 changes: 8 additions & 0 deletions src/config/session-management.md
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Expand Up @@ -21,6 +21,14 @@ latter being specific to a user session.
Note that some software assumes the presence of a system bus, while other
software assumes the presence of a session bus.

When using a session bus, it might be necessary to export display environment
variables, such as `DISPLAY` (for [X](./graphical-session/xorg.md) or XWayland)
and `WAYLAND_DISPLAY` (for [Wayland](./graphical-session/wayland.md)) to the
D-Bus activation environment. This is used, for example, by programs that expect
to be able to launch a prompt for user interaction.
[dbus-update-activation-environment(1)](https://man.voidlinux.org/dbus-update-activation-environment.1)
can be used to export variables from your environment.

## elogind

[elogind(8)](https://man.voidlinux.org/elogind.8) manages user logins and system
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