0

I was updating my Ubuntu LTS and we had a power outage. Now, when I try to "sign in", I get a "failed to start session" message in bold red under my main and guest accounts. I'm not sure how to fix this.

I'm also unable to connect to the Internet. I have tried (Ethernet, WiFi, and Hotspot)

When I try signing in with the wrong password on the main log-in screen, it says "invalid password", but when I use the correct password it says failed to start the session when I try to sign in using Ctrl+Alt+F2 it says login incorrect.

Zanna
  • 72,312
Sutton Elisabeth
  • 1

2 Answers2

0

You can try an older kernel, under the "Advanced ..." grub menu choice. It might help to run fsck from an install media on the root partition. Try booting in single user mode, by adding the word "single" after the "quiet splash" on the linux line in the grub boot commands. At the grub menu, type "e" to edit (instructions at bottom of screen), add the word, and then type ctl-x or F10 to boot. In single user mode, you should be able to try the apt-get install commands to let things complete. Mid-way thought an update, it's pretty hard to unwind back to a previous state -- I've never tried it, but ... If you can get past the login hurdle, you can fix things easiest by letting the update proceed.

Another thought, try a/another USB keyboard if you have one around. Run the memory check if grub offers that choice. After a power failure, who knows what hardware may be fried.

ubfan1
  • 19,049
0

After you login with the graphical interface, does it transition to a black screen, and cycle you back to the login? If so, try booting into single user, navigating to your /home directory. Try:

cp .Xauthority .Xauthority.bak && rm .Xauthority && sudo reboot

This will regenerate a new .Xauthority file at login

wamba
  • 1