Ubuntu

Network-manager shows no connections

Asked by Per Engström

Hello, the network-manager shows no connections and I can not set up VPN. It is as if the network-manager is not setup up correctly not being able to establish contact with the hardware. I do have a functioning ethernet DHCP LAN connection (otherwise I could not post this question).

I don't think it is a bug, just a missing config or something.
I did a non conventional install of ubuntu and I fear something is missing.

I used the ubuntu server installation disc to setup software RAID, did not choose any listed packages just did a bare command promt install. I rebooted my new ubuntu RAID system and from the promt I did:

sudo apt-get update
sudo apt-get upgrade
sudo reboot
sudo apt-get install ubuntu-desktop

After the installation of ubuntu-desktop everything works and looks like a standard ubuntu desktop, exept of course that the network toolbar icon shows an empty WiFi symbol. When rigth-clickning the toolbar icon it does not regonize any connections. I can config an ethernet connection but nothing changes. Only have that original DHCP ethernet connection from the first basic ubuntu server command promt install.

Anyone who can help me fix it?

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Per Engström
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Revision history for this message
actionparsnip (andrew-woodhead666) said : 		#1

Why did you not install the desktop OS if you wanted a desktop Ubuntu system? You can setup RAID in the GUI installer too.

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Per Engström (per-10823-n) said : 		#2

Can I? Is it not only LVM? Or can I do it within LVM?

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actionparsnip (andrew-woodhead666) said : 		#3

If you run:

sudo lshw -C network

What wifi chip are you using? What driver module is it using? Is it 'unclaimed'? Does it have a device name (like 'wlan0' etc)

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Per Engström (per-10823-n) said : 		#4

I have no WiFi on this machine, I use the motherboard ethernet LAN. I have a MSI FM2-A85XA-G65 motherboard with an AMD A10-6800K CPU/APU with no extra cards installed. I have three 1TB drives configured in software RAID0 (BIOS in ACHI-mode).

I used to have a standard ubuntu installation with one hard drive on this machine and the network icon swithed to wired connection as soon as the network was detected. No issues with my hardware or ubuntu.

But sudo apt-get install ubuntu-desktop from a bare promt misses something in the setup or some package is missing. I can right-click on the network icon and set up a VPN- or Ethernet-connection and it looks ok in the GUI - but nothing happens in reality, just my basic DHCP connection whatever I do.

Look below:

per@per:~$ sudo lshw -C network
[sudo] password for per:
  *-network
       beskrivning: Ethernet interface
       produkt: RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller
       tillverkare: Realtek Semiconductor Co., Ltd.
       physical id: 0
       bus info: pci@0000:01:00.0
       logiskt namn: eth0
       version: 06
       serienummer: d4:3d:7e:51:9f:82
       storlek: 1Gbit/s
       kapacitet: 1Gbit/s
       bredd: 64 bits
       klocka: 33MHz
       förmågor: pm msi pciexpress msix vpd bus_master cap_list ethernet physical tp mii 10bt 10bt-fd 100bt 100bt-fd 1000bt 1000bt-fd autonegotiation
       konfiguration: autonegotiation=on broadcast=yes driver=r8169 driverversion=2.3LK-NAPI duplex=full firmware=rtl8168e-3_0.0.4 03/27/12 ip=192.168.1.136 latency=0 link=yes multicast=yes port=MII speed=1Gbit/s
       resurser: irq:51 ioport:e000(storlek=256) memory:d0004000-d0004fff memory:d0000000-d0003fff
per@per:~$

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Per Engström (per-10823-n) said : 		#5

As I said the icon still shows an empty WiFi symbol although I only have a wired connection, when I right-click the icon and click on connection information a pop-up appears saying I have no valid connections!
Still initernet works just fine!

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Per Engström (per-10823-n) said : 		#6

Sorry for using exlamation marks, I am not upset. I am thankful for all help I can get :)

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actionparsnip (andrew-woodhead666) said : 		#7

Could install wicd then uninstall network manager. Then reboot.

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Per Engström (per-10823-n) said : 		#8

Found it! Changed a false to a true and now it detects the wired network and the icon has changed from an emty WiFi icon to an opposite arrows icon! It also shows information from active connections! Have not tried VPN yet, but everything else seems to be working as it's supposed to do.

I thank you for your invested time and effort! I did not need to install wicd. Happy happy! :)

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http://askubuntu.com/questions/71159/network-manager-says-device-not-managed
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wired device not managed

Most probably your interface appears in /etc/network/interfaces. By default, NetworkManager does not manage interfaces that appear in /etc/network/interfaces. You can change this behaviour.

To do this - in a terminal:

sudo nano /etc/NetworkManager/NetworkManager.conf

change the line managed=false to managed=true

Save, stop and start network manager:

sudo service network-manager restart
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