Can't Lock Graphical Desktop on RHEL 7.8

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Working on a project where they make graphical desktops available to their data scientists. Received a security finding that the desktops didn't have automate screenlocking enabled. Threw together some automation to make the requisite security settings. However, when users login, we're still getting a popup that says (see attached image-snippet):

Screen lock disabled
Screen locking requires the GNOME display manager

GNOME ScreenLock Alert

Now, the system does have the:

  • gdm-3.28.2-22.el7.x86_64
  • grubby-8.28-26.el7.x86_64
  • gnome-screensaver-3.6.1-20.el7.x86_64
  • dconf-0.28.0-4.el7.x86_64

RPMs all installed. And the relevant dconf settings are applied. So, I'm not sure what's going on. I haven't submitted the system for scanning, yet, because I assume the popup means the scans will fail (but that may be a bad assumption). If such is the case, anyone have any ideas why I'm getting this popup and how to remediate it?

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Never mind. Just found out they were running the system at 3/multi-user rather than 5/graphical. Change the systemd-target and the error goes away. WTF.