So, we've updated to 7.5, and for two machines--A Dell Precision M4800, and a Dell Precision 7510..both running Radeon cards--we no longer get the GDM Greeter login box NOR can we switch to virtual text login terminals. It's been driving me nuts. The systems do allow for SSH logins, so that's how we get to them, but I've checked the Xorg.0.log and nothing stands out. Did a systemctl status gdm.service and got this:

Aug 07 16:23:31 gs6102dsclxpvirgo3 gnome-shell[2023]: g_array_unref: assertion 'array' failed Aug 07 16:23:31 gs6102dsclxpvirgo3 gnome-shell[2023]: g_array_unref: assertion 'array' failed Aug 07 16:23:31 gs6102dsclxpvirgo3 gnome-shell[2023]: g_array_unref: assertion 'array' failed Aug 07 16:23:31 gs6102dsclxpvirgo3 gnome-shell[2023]: g_array_unref: assertion 'array' failed Aug 07 16:23:31 gs6102dsclxpvirgo3 gnome-shell[2023]: g_array_unref: assertion 'array' failed Aug 07 16:23:31 gs6102dsclxpvirgo3 gnome-session-binary[1926]: WARNING: Could not get session path for session. Check that logind is properly installed and pam_systemd is getting used at login. Aug 07 16:23:31 gs6102dsclxpvirgo3 gnome-shell[2023]: g_array_unref: assertion 'array' failed Aug 07 16:23:31 gs6102dsclxpvirgo3 gnome-session[1926]: gnome-session-binary[1926]: WARNING: Could not get session path for session. Check that logind is properly installed and pam_systemd is...ed at login. Aug 07 16:23:31 gs6102dsclxpvirgo3 gnome-shell[2023]: g_array_unref: assertion 'array' failed Aug 07 16:23:32 gs6102dsclxpvirgo3 gnome-shell[2023]: JS ERROR: Exception in callback for signal: reset: Gio.DBusError: GDBus.Error:org.freedesktop.DBus.Error.AccessDenied: No session available LoginDialog<._resetGreeterProxy@resource:///org/gnome/shell/gdm/loginDialog.js:837:29 wrapper@resource:///org/gnome/gjs/modules/_legacy.js:82:22...

Did the upgrade break something? Possibly. Any and all hints/ideas/etc. greatly welcomed.

PEV