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I don't know what happened, but when I got back from suspend, suddenly network manager was deleted on my ubuntu 14.04. So, looks like it needs a reinstall, however, I don't have the packages saved anymore.

I did find the following page that probably would solve my problem:

How to reinstall network manager without internet access?

Only, there is a stumbling block: I can't open/edit /etc/resolv.conf.

My steps: 

xubuntu@xubuntu:~$ sudo mount /dev/sda2 /mnt
xubuntu@xubuntu:~$ sudo mount --bind /dev /mnt/dev
xubuntu@xubuntu:~$ sudo mount --bind /proc /mnt/proc
xubuntu@xubuntu:~$ sudo mount --bind /sys /mnt/sys
xubuntu@xubuntu:~$ sudo chroot /mnt
root@xubuntu:/# sudo cp /etc/resolv.conf /sda2/etc/resolv.conf
sudo: unable to resolve host xubuntu
cp: cannot create regular file ‘/sda2/etc/resolv.conf’: No such file or directory
root@xubuntu:/#

And if I try to edit via nano, the file that gets opened is File: /var/tmp/resolvXX5eDVsN.conf

What obvious mistake am I making here? Because I just don't see it. Anyone who will please help me?

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deniz
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  • Problem not solved. Apparently network manager is still installed, but even though I restarted it like Sai Teja suggested, I get the message that it's running and a process number that I can't see in system manager under all processes. And resolv.conf gets emptied after each restart. I'm confused. How do I solve this? And Sai, the libs you said to download. Did you mean by that I should downgrade? Because according to symantic I already have the latest versions of them. – deniz Feb 02 '16 at 20:56
  • Okay, still no idea what's going on with network-manager, but I deinstallieren it, downloaded wicd instead. That works as far as internet connection goes. – deniz Feb 02 '16 at 21:24

2 Answers2

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This is happening for others also in this week...After a long research on this problem I'm deducting these possibilities:

Causes of the problem:

1) Incomplete installation. 2) Pre-released software might end up in causing so un-select it in software manager settings.

Solution : 1)Restart the network Manager. sudo service network-manager start

if this isn't work in your case download the following files manually from other pc and copy it to affected system. Click here to get those files. For 64 bit :

libnl-3-200_3.2.21-1_amd64.deb
libnl-route-3-200_3.2.21-1_amd64.deb
libnl-genl-3-200_3.2.21-1_amd64.deb

For 32 bit: 1. libnl-3-200_3.2.21-1_i386.deb.deb 2. libnl-route-3-200_3.2.21-1_i386.deb.deb 3. libnl-genl-3-200_3.2.21-1_i386.deb.deb Put them in a folder and in terminal go up to that terminal,these are Debian files so install using this command.

sudo dpkg -i lib*.deb

this will install all three files at a time. And now restart your system. Every thing works fine your network manager will come again! the actual link

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Sai Teja Nagamothu
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  • Thank you, I'll try. The problem is, I've been using 14.04 for a long time now, and it's only now this is happening, so it's unlikely to be incomplete installation. Maybe the second one? Can't say. – deniz Feb 02 '16 at 19:31
  • Jacob, how do you figure my question a duplication? Yes, the underlying problem might be, I've even pointed to a possible solution from this site itself. But my main question was what I was doing wrong with the resolv.conf edit. – deniz Feb 02 '16 at 19:34
  • @deniz For the record, I didn't mark it as a dupe, but you're right, I acted by the answer, which does not make the dupe. – Jacob Vlijm Feb 02 '16 at 19:55
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The obvious mistake you made was mixing you mount point with the name of your block device. You can't do:

sudo cp /etc/resolv.conf /sda2/etc/resolv.conf

because /sda2 is non-existing directory. Earlier you did:

sudo mount /dev/sda2 /mnt

and /mnt (not /sda2) is the right directory for your copy operations. So do:

sudo cp /etc/resolv.conf /mnt/etc/resolv.conf
nsilent22
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