I just discovered that a whole bunch of packages just got deleted from my F27 system after doing an update.  This happened on 2 different systems.  I discovered this after I had to reboot one of them because the laptop screen went blank.  After rebooting it never went to graphics mode.  I discovered then that the gdm package had been deleted.  I then looked at the dnf.log file and it shows that 12 packages were updated and 119 packages were removed.  WTF?

Paolo