Description of problem:

Since I installed the last update of Fedora 22 on a Dell R620 or R610 server, it is not possible to login to the server, neither on the console nor with SSH.

SElinux is disabled on both servers


Version-Release number of selected component (if applicable):
kernel 4.3.4-200.fc22.x86_64


How reproducible:


Steps to Reproduce:
1. Boot Fedora 22 with kernel version 4.3.4 on a Dell R610 or R610 server without any window manager
2. Try to login on the console
3. Try to login with SSH

Actual results:
No login banner appears on the console : it just displays the "f" logo on a black screen. Connecting to the server with SSH blocks forever.

The problem does not show up when booting with previous the kernel (4.2.8-200).

Expected results:
Getting a login banner on the console
Getting a shell prompt when connecting to the server using SSH.


Additional info:

What I could observe :
- most (all ?) services are started on the server but there is no way to log on to it
- the command "ssh root@server bash" gives a shell without a prompt nor job control but helps to investigate further
- the command "ps ax | grep systemd" displays the following (note the D flag) :
  root         1  0.3  0.0  44156  5896 ?        Ds   13:15   0:02 /usr/lib/systemd/systemd --switched-root --system --deserialize 21
- systemctl seems to be broken. Trying to restart any service leads to this :
  systemctl restart httpd
  Failed to restart httpd.service: Connection timed out
- there's no way to reboot :
  reboot
  Failed to start reboot.target: Connection timed out