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--- doc:appunti:linux:sa:nis [2020/12/16 15:10] – [NIS users unable to poweroff/reboot or manage printers] niccolo
+++ doc:appunti:linux:sa:nis [2020/12/16 15:43] – [NIS users unable to poweroff/reboot or manage printers] niccolo
@@ Line 224: / Line 224: @@
 ====== NIS users unable to poweroff/reboot or manage printers ======
-We experienced a problem with an **Ubuntu 20.04** Focal Fossa used as **NIS client**: some tasks were inhibited because the user - despite it was **logged-in locally** on the physical machine - it was considered **as a remote** one.
+We experienced a problem with an **Ubuntu 20.04** Focal Fossa used as **NIS client**: some tasks were inhibited because the user - despite it was **logged-in locally** on the physical machine - it was considered **non interactive** one.
+One symptom can be the following error message when you issue the **reboot** command into a terminal session:
+<code>
+Failed to set wall message, ignoring: Interactive authentication required.
+Failed to power off system via logind: Interactive authentication required.
+Failed to open initctl fifo: Permission denied
+Failed to talk to init daemon.
+</code>
+Using the command **systemctl reboot -i** does not work either, producing the following error:
+</code>
+<code>
+==== AUTHENTICATING FOR org.freedesktop.login1.reboot-multiple-sessions ===
+Authentication is required for rebooting the system while other users are logged in.
+</code>
+Choosing to reboot or poweroff from the various **desktop applets** produces instead just a **session close**.
-FIXME What the errors?
 It turned out that the **[[https://wiki.debian.org/PolicyKit|PolicyKit]]** authorization manager is enabled, according to the default policies that problematic tasks are reserved to **local users** only, whereas users **authenticated by the NIS** server are considered somehow remote.