upgrade 14.04 with errors and shows red sign on top

Question

I upgraded to Ubuntu 14.04 but it shows a red symbol on the top and gives error message in function update

E:unknown error:<type exceptions.type error> upgrade manager or any other file is not present

Some questions for you that will help us in answering: From which Ubuntu version did you upgrade to 14.04? How did you upgrade (from the console or using the GUI)? Did you get any error messages while upgrading? Did you reboot after the upgrade? — ph0t0nix, Aug 28 '14 at 8:56
from 12.04 i upgraded from console yes i got error while upgrading i infact got a blank screen yes i rebooted — user3798037, Aug 28 '14 at 9:03
What happens if you run do-release-upgrade? Does it tell you there is no new version, or does it continue the upgrade process? — ph0t0nix, Aug 28 '14 at 9:05

Tim · Accepted Answer · 2014-11-29 14:55:18Z

-2

This can damage stuff. Do not run these commands unless you know what you're doing!

Hi Please try these options

sudo rm /var/lib/apt/lists/* -vf

then

sudo apt-get update

or

sudo apt-get -f install

Tim

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answered Nov 29 '14 at 14:21

11 bronze badge

This can damage stuff. Do not run these commands unless you know what you're doing! – Tim Nov 29 '14 at 14:55

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