While preparing for my RHCE exam, I wanted to install of the system-config-* GUIs to see what functionality they provided. I used the yum groupinstall option to install the GNOME desktop:
$ yum groupinstall ‘GNOME Desktop Environment’
and then proceeded to add my preferred desktop environment to /etc/sysconfig/desktop:
$ cat /etc/sysconfig/desktop
Once these items were installed I ran ‘init 5’ and was greeted with the following message in /var/log/messages:
init:x respawning too fast, disabled for 5 minutes.
After reading through various logs and scripts, I noticed that the gdm display manager wasn’t installed. I thought groupinstalling the GNOME desktop would force a display manager to be installed, but alas that isn’t the case. To get everything working I fired up yum and installed gdm:
$ yum install gdm
Everything worked as expected once gdm was installed, and I could fire up the GUIs without issue.