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my ubuntu 16 just completed a routine adjustment of its system files like it often does. it keeps asking me to upgrade to ubuntu 18.04 so i finally gave it permission to do so. this process took over ten hours then it finished with a report that the upgrade had failed. it had been saying that 'systemd' was reporting errors, but it returned me to my usual ubuntu 16 desktop. i started doing a file transfer which i commonly do but the usb drive would not connect. when i tried a reboot, it came up with the red beaver ubuntu 18.04 log on screen with my name in the password entry box, but it fails to accept my password. whenever i put in the password, the screen goes black then the drum error sound plays and it returns to the password entry on the red beaver screen. i can not get anything other than the beaver password entry panel.

i have a complete ubuntu 18.04 set of CD disks which i have used on another computer. can i use it to repair whatever has been lost in this failed upgrade? i do not want to lose all of my data on the harddrive which was created there under under version 16, but this upgrade seems to have lost my password somehow.

Stan Kulikowski
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  • Welcome to AskUbuntu, perhaps this one https://askubuntu.com/questions/223501/ubuntu-gets-stuck-in-a-login-loop ? – Sadaharu Wakisaka Feb 29 '20 at 07:01
  • Ubuntu 16? Are you trying to convert Ubuntu Core 16 into Ubuntu 18.04 LTS? as that isn't a supported move. There is Ubuntu 16, as server & desktop releases use yy.mm format, and only special purposes releases like Ubuntu Core 16 for IoT appliances use the yy format; whilst based on server releases they aren't identical. – guiverc Feb 29 '20 at 07:20

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I had a similar problem once - you could try this:

the .gnome file in your home directory could be corrupt. Rename it to something else (.gnome-old) by opening a terminal at login (ctrl alt f2) or by booting off a usb image. Then reboot normally.

baguette
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