You have been subscribed to a public bug by Jan Groenewald (jan-aims):
In a university computer lab session we disable shutdown, restart, suspend,
hibernate, switch user, and lock screen.
Some are done with polkit (suspend, hibernate) and then the suspend menuitem is
not shown on the session menu.
Some are done with dconf e.g.
# Show real name (and wider session menu as a result); lab also disable shutdown
[com.canonical.indicator.session]
show-real-name-on-panel=true
suppress-logout-restart-shutdown=true
suppress-restart-menuitem=true
suppress-shutdown-menuitem=true
user-show-menu=false
# Quiet login screens
[com.canonical.unity-greeter]
play-ready-sound=false
# Update-notifier
[com.ubuntu.update-notifier]
no-show-notifications=true
# Software installation not possible for normal users
[desktop.gnome.unity.lenses.applications]
display-available-apps=false
# Disable the lock screen & print-setup not on laptops, but in labs
[org.gnome.desktop.lockdown]
disable-lock-screen=true
disable-print-setup=true
disable-user-switching=true
# Screensaver lockdown in labs
[org.gnome.desktop.screensaver]
lock-enabled=false
user-switch-enabled=false
# Logout prompt
[org.gnome.SessionManager]
logout-prompt=false
This works fine except there is no value for suppress-lock-menuitem or
suppress-switch-menuitem or suppress-lock-switch-menuitem, and the
Lock/Switch User menuitem still appears; even though it is non-
functional. Clicking on it blacks out the screen for a second and then
shows the desktop again.
** Affects: indicator-session (Ubuntu)
Importance: Undecided
Status: New
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Lock/Switch stay in session menu even if disabled
https://bugs.launchpad.net/bugs/1325353
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