Unfortunately this is the default power button behaviour.
Even though we have
Settings > Power > When the Power Button is Pressed = Power Off
to gnome-shell "Power Off" just means to show the dialog.
This is confusing, and something I have complained about myself. But if
you wait 60 seconds without selecting anything in the dialog then it
will eventually power off. Just as you asked.
If you want an faster system power off then try: sudo poweroff
The Settings GUI option of "Power Off" is actually just an illusion
presented by gnome-control-center. The actual list of options supported
internally is:
<enum id="org.gnome.settings-daemon.GsdPowerButtonActionType">
<value nick="nothing" value="0"/>
<value nick="suspend" value="1"/>
<value nick="hibernate" value="2"/>
<value nick="interactive" value="3"/>
</enum>
So there is no "Power Off" option in gnome-shell in reality. What you
are seeing is the "interactive" option.
For gnome-session-quit to offer the "--power-off" parameter sounds like
a promise it can't keep. Gnome only supports the four options listed
above.
Similarly,
gnome-session-quit --power-off --no-prompt
still prompts the user :P
** Tags added: bionic disco
** Changed in: gnome-session (Ubuntu)
Status: New => Opinion
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You received this bug notification because you are a member of Desktop
Packages, which is subscribed to gnome-session in Ubuntu.
https://bugs.launchpad.net/bugs/1819920
Title:
gnome-session-quit --power-off option ignored
Status in gnome-session package in Ubuntu:
Confirmed
Bug description:
OS: Ubuntu 18.04
Command: gnome-session-quit --power-off
Expected behaviour: Power off dialogue, with "Power Off" selected
Actual behaviour: Power off dialogue, with "Cancel" selected
To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/gnome-session/+bug/1819920/+subscriptions
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