Description of problem:

  As root, type "reboot" in a shell. Nothing happens for a number of seconds.
  Then the following two lines of error messages appear, and there is another
  shell prompt:

    [root@host ~]# reboot
    Failed to open initctl fifo: No such device or address
    Failed to talk to init daemon.
    [root@host ~]# 

Version-Release number of selected component (if applicable):

  systemd-248~rc2-3.fc34.x86_64

How reproducible:

  Occasionally. I have not found a reproducible way to get the system into
  this state.

Steps to Reproduce:

  This describes the last time this happened. I have also seen the messages
  about the initctl file missing a week or two ago, but I cannot remember
  the things I did back then, or what version of systemd was installed back
  then.

    1. Use F34 in Gnome with or without X.
    2. suspend-to-ram ("echo mem > /sys/power/state") a few times over a few days
    3. some time after the resume, the screens remain black, no reaction to
       keyboard/mouse, and ssh access only allows rebooting with
       "systemctl --force --force reboot"

Actual results:

  System does not react to keyboard input, screens stay black with a mouse
  pointer, and the system requires a special reboot command or a hardware
  reset to reboot.

Expected results:

  System continues working after resume from STR.

Additional info:

  I cannot tell what this is may related to, or even how to reproduce it.
  It just happens to happen from time to time.