I had a update notification so I accepted it and once it finished the process it restarted. The first message on the screen was this:

1.323856 acpi pcc probe failed
Starting version 219

I can see login screen but when I put my password in it never makes it to the desktop.


1 Answer 1


From this topic: https://askubuntu.com/a/605455/101797

Try this solution:

  1. Restart your computer, as it boots up hold the Shift key so as to get grub boot options.
  2. Select Advanced Options from the grub menu and boot into the system.
  3. Enter your login details and run the commands below


sudo systemctl enable sddm.service -f
sudo reboot

After this your computer should be able to boot up normally.

  • 1
    When you find an answer on another question, please flag this one as a Duplicate. We like to combine them. If you can't flag, please avoid answering, and when you can comment do that!
    – Tim
    May 17, 2015 at 11:54
  • Got Error getting authority: Error initializing authority: Could not connect: No such file or directory (g-io-error-quark, 1) Error to execute operation: No such file or directory. And now, what I have to do?
    – Sardinha
    Jul 8, 2015 at 15:03

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