Strange GDM bug in CentOS 7.6.1810 - wyldckat/wyldckat.github.io GitHub Wiki

I installed CentOS 7.6 on a server last year and only noticed this issue today.

If you get an error message at /var/log/message stating:

dconf-WARNING: unable to open file '/etc/dconf/db/gdm': Failed to open file \u201c/etc/dconf/db/gdm\u201d: open() failed: No such file or directory; expect degraded performance

Then the solutions seems to be the following:

  1. Create the missing auxiliary folder:
mkdir /etc/dconf/db/gdm.d
  1. Create the file /etc/dconf/profile/gdm with the following content:
user-db:user
system-db:gdm
file-db:/usr/share/gdm/greeter-dconf-defaults
  1. Run this command:
dconf update
  1. And finally check if the missing file is now there:
ls -l /etc/dconf/db/gdm

Sources: