Network Manager is not working anymore!

[cybergsus]

Hi,
I'm a newbie in Linux (ubuntu) environment...and my English is also not the best...but hopefully you get what I try to say
Well my prob started as I tried to install several w-lan applications.
I tryed them out and deleted them again.
till (i don't remember the name of the prog) I finally shoot "network manager".
Now I really have no idea how to solve the problem I tried some things like:
second installation of ubuntu to get back internet.
downloaded some deb files and installed them in off-line mode...but
it doesn't work because some not satisfiteble things happened...hmm
now I tried to fix over USB live to fix it no chance.

What I need is a possibility to install from USB on my first system or boot system one and USB on the same time to use the internet per switching or something like that.
Maybe it's possible to update my system wile the USB system is running?

Or is there a possibility to use the ubuntu CD and install all needet packages from there because network manager is already in UBUNTU
I think that all OS company's have to think about that , when they deliver a OS that you can choose or afterwords reinstall progs from the original source ...or what?

please help I don't have tissues left
thx for help
cybergsus

[waterhead]

Sometimes when you uninstall an application the installation file is still in the system. You may be able to reinstall it just by giving this command.

sudo apt-get install network-manager

[devils casper]

Execute this

sudo apt-get clean all
sudo apt-get update
sudo apt-get autoremove
sudo apt-get dist-upgrade

Above commands will clean cache, refresh package list, remove dependencies that no longer needed and upgrade every installed package to latest version.

[cybergsus]

Sorry Dude's...

because of missing Internet connection are updates not possible.

sudo apt-get install network-manager

it says that network-manager is installed in latest version...absolutely mysterious.
well are there some other solutions?
I also done fsck nothing changed

Is it possible to update my system from USB?
I have a bootble USB with lucid-alternate on

thx for help

[cybergsus]

Well I could reinstall network manager with some packages buuuut
It does not connect to the net I click on connect. and it disconnect me instead.
I just have mobilebroadband.
Can somebody help please?
c ya
Nic

[waterhead]

You should be able to set your system to use a CD for the source. Open this program from the main menus.

System-->Administration-->Software Sources

On the first tab named "Ubuntu Sofware", uncheck all of the boxes under "Downloadable from the Internet".

On the same tab, below "Installable from CD-ROM/DVD", put a check in the box next to "Cdrom with Ubuntu <ver>". The version listed will depend on the version installed. You may need to have the CD in the drive when you do this.

Check the next tab "Third-Party Software". This contains a list of the repositories it will try to connect to. I don't know if it still will try, but you may want to uncheck any listed repositories that are checked. You should write down the ones that are checked, so that you can restore it later.

At the bottom of the same tab is a box labeled "Add CD-ROM...". Here you can add another Ubuntu installation disk to use as a source. If you used the CD to install, but now have the DVD version, this is where you can set it to to use it. I would only use disks from the same Ubuntu version. Don't try to mix versions.

Close that program. Insert the CD, if you haven't already, and open this program.

Applications-->Add/Remove..

In the "Search:" box, enter: NetworkManager. Check the box net to it, and NOT KNetworkManager. Then click the "Apply Changes" button at the bottom right of the screen.

This should restore NetworkManager. You may need to reboot, but remove the CD first!

[kmitnick]

try to configure it manually
press Alt + F2 then type Terminal
Assuming you want to connect via Wireless Card...
type in terminal iwconfig then check for the wlan, where the default is wlan0

Assuming my network ESSID is Network, encryption key is 1122334455
type iwconfig wlan0 essid Network enc 1122334455
iwconfig wlan0 ap auto
sudo dhclient wlan0

then to make sure that you are connected
ping Google if you get a reply then you can use what other users told you to use {i.e:sudo apt-get}

Hope it works