I am unable to enter anything at the login screen; it just freezes directly after the page shows. The cursor inside the login form blinks about 10 times, then it stops. I can't move the mouse or use the keyboard.

I already entered the secure mode and triggered update, upgrade and dist-upgrade via the root shell it made no difference.


We were able to solve it by starting the shell in secure mode and executing the following commands.

  apt-get update 
  apt-get install xserver-xorg-input-all
  apt-get install ubuntu-desktop
  apt-get install ubuntu-minimal
  apt-get install xorg xserver-xorg
  apt-get install xserver-xorg-input-evdev    //I think this packet was the problem
  apt-get install xserver-xorg-video-vmware

  • 1
    Thank you, this solved my exact problem. I was trying to fix problems with my video and followed this askubuntu.com/questions/763672/… and after reboot got the same problem as you (don't know if it was because of what I did or not). I installed xserver-xorg-input-all which pulled in xserver-xorg-input-evdev and now it works again. – Kayaman Aug 22 '17 at 19:47
  • 2
    apt-get update then apt-get install xserver-xorg-input-evdev then /etc/init.d/lightdm restart worked for me. Of course, I did these as root user. – User1 Feb 20 '18 at 2:37
  • @User1, add this as an Answer please, not as comment. Thanks for your solution! – Black Feb 20 '18 at 11:00

To Simplify @Black's answer, run these as root:

apt-get update
apt-get install xserver-xorg-input-evdev
/etc/init.d/lightdm restart

No reboot required on this solution.

  • Also needed xserver-xorg-core as a dependency for xserver-xorg-input-evdev but still didn't work. – Shayan Jun 9 at 21:47

I tried everything, for weeks, all day long. I finally went to Driver Manager and changed my video driver to NVIDIA, and that fixed it.

Ironically, NVIDIA was the recommended setting. No idea why that wasn't chosen. It wasn't me - Linux set that.

Anyway, let me know. YMMV.

  • 1
    Linux doesn't set jack. Maybe some of the Ubuntu topping which is supposed to do some magic in the back. Anyway, I'm voting down because this is not a real answer. No background on how this solution works, no documentation that explains anything. Just a best guess. – Tim Jul 12 '18 at 21:01

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