cannot get updates from manager or add and remove

Thank you for taking the time to report this bug and helping to make Ubuntu better. Please answer these questions:

* Is this reproducible?
* If so, what specific steps should we take to recreate this bug?

This will help us to find and resolve the problem.

Please open a Terminal from the menu Applications->Accessories->Terminal and type:

sudo dpkg --configure -a

Then do also, to upgrade your system using command line:

sudo apt-get -f install
sudo apt-get update
sudo apt-get upgrade

give your user password when requested, you don't see nothing when you type it, then press enter.

Hope this helps

Bhavani Shankar.

I tried this above but got this

dwinningham@dwinningham-laptop:~$ sudo dpkg --configure -a
sudo: unable to resolve host dwinningham-laptop
dwinningham@dwinningham-laptop:~$

Seems like this: https://answers.launchpad.net/ubuntu/+source/gnome-terminal/+question/31069

Into the /etc/hosts file there must be the computer name
lshw | head -1
give me "ubuntu" is my computer name

and into my /etc/hosts i have:
127.0.0.1 localhost ubuntu
127.0.1.1 ubuntu

So please check yours

You must edit the /etc/hosts file as root but sudo is not working so:

Please Start the pc the when you see the GRUB row...
Press ESC.

Press "e" for edit.

Highlight the line that begins kernel ………, and press "e"

Go to the very end of the line, add rw init=/bin/bash

press enter, then press "b" to boot your system.

Your system will boot up to a passwordless root shell.

You can edit the /etc/hosts file with nano editor type

nano /etc/hosts

to reboot the pc please type

reboot

Hope this helps