This issue is caused by the Users and Groups utility which is part of
`gnome-system-tools`. When changing the password from "Asked on logon"
to "Not asked on logon" the user is added to the `nopasswdlogin` group
and this is what causes the switch-user screen to not ask for a
password.
If you select the option to not require a password to login during
installation, it is not possible to bypass authentication when switching
users. This is because `autologin-user` is set to your username in
`/etc/lightdm/lightdm.conf` and that works correctly.
`gnome-system-tools` was originally included in Ubuntu MATE because it
offers user and time management features. But it can now be removed from
the Ubuntu MATE default install because recent versions of MATE Control
Center provide user and time management.
** Changed in: ubuntu-mate-meta (Ubuntu)
Status: Triaged => In Progress
** Summary changed:
- Lock screen can be bypassed when auto-login is enabled.
+ Lock screen can be bypassed when auto-login is enabled via gnome-system-tools
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You received this bug notification because you are a member of Ubuntu
Desktop Bugs, which is subscribed to gnome-system-tools in Ubuntu.
https://bugs.launchpad.net/bugs/1706770
Title:
Lock screen can be bypassed when auto-login is enabled via gnome-
system-tools
To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/arctica-greeter/+bug/1706770/+subscriptions
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