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Description of problem:
When normal user(not root) changes password by using the 'passwd' command, the syslog will output:
May 25 18:48:18 xxx gnome-keyring-daemon[1577]: couldn't connect to dbus session bus: Cannot autolaunch D-Bus without X11 $DISPLAY
May 25 18:48:18 xxx gnome-keyring-daemon[1577]: couldn't connect to dbus session bus: Cannot autolaunch D-Bus without X11 $DISPLAY
Version-Release number of selected component (if applicable):
kernel-3.10.0-1127.el7.x86_64
gnome-shell-3.28.3-24.el7.x86_64
gnome-keyring-3.28.2-1.el7.x86_64
libgnome-keyring-3.12.0-1.el7.x86_64
gnome-keyring-pam-3.28.2-1.el7.x86_64
How reproducible:
Normal user who doesn't login the Gnome session changes the password by command 'passwd' in OS which Gnome environment is installed. 
Steps to Reproduce:
1. Normal user who doesn't login the Gnome session.
2. Using the command 'passwd' in local console or remote terminal.
3. Check the syslog.
Actual results:
May 25 18:48:18 xxx gnome-keyring-daemon[1577]: couldn't connect to dbus session bus: Cannot autolaunch D-Bus without X11 $DISPLAY
May 25 18:48:18 xxx gnome-keyring-daemon[1577]: couldn't connect to dbus session bus: Cannot autolaunch D-Bus without X11 $DISPLAY
Expected results:
No outputs.
Additional info:
In my customer's environment is RHEL 7.4(case 02653431) , and I can reproduce this issue in RHEL 7.8 . I and customer also think this output is noisy even it's harmless.
gnome-keyring-daemon requires a dbus session bus, and if one is not available, a bus is autolaunched as a fallback. If the autolaunch fails, and a dbus session bus could not be launched, the warning is printed, because the keyrin passwor dis then not updated (which is undesirable. The warning is appropriate to the severity of the problem and not noisy.