[SOLVED] No Network connection at all after update & reboot

[aalemann]

Hi,

yesterday evening I installed Linux Mint 13 Mate in a dual-boot option with Windows XP. Everything was fine (after I convinced the boot-manager to also recognize linux....). Then I installed all recommended updates and switched from DHCP to a static IP address (Menu -> Control Center -> Network).

Then I switched to PC off and today I switched in on again and during the boot of Linux the following messages appeared:
"configuring networking" and
"60 seconds more to configure networking"

After that linux started without any network connection. I typed

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sudo service NetworkManager start

which gave me the error message the NetworkManager is an unrecognized service.

Then I did this

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sudo dpkg-reconfigure network-manager

trying to reset any configuration. No success.

Then I reinstalled the network-manager by typing

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sudo apt-get --reinstall install network-manager

After rebooting, the system tray icon has vanished, and I have no connection at all.

This is the output of the command

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sudo inxi -SNx

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System:    Host: ipfpc105 Kernel: 3.2.0-23-generic x86_64 (64 bit, gcc: 4.6.3) Desktop: N/A Distro: Linux Mint 13 Maya
Network:   Card: Intel 82579LM Gigabit Network Connection driver: e1000e ver: 1.5.1-k port: f060 bus-ID: 00:19.0

and of the command

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sudo nm-tool

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NetworkManager Tool

State: connected (global)

- Device: eth0 -----------------------------------------------------------------
  Type:              Wired
  Driver:            e1000e
  State:             unmanaged
  Default:           no
  HW Address:        2C:41:38:9F:AA:2C

  Capabilities:
    Carrier Detect:  yes

  Wired Properties
    Carrier:         off

Any ideas?

[aalemann]

OK, my internet is working again, what I did is

/etc/init.d/networking restart

But I still have the problem that the system tray icon disappeared.
And I don't know what caused my problems, but I'd like to know.

Any ideas?

[Gord]

I still have the problem that the system tray icon disappeared.

I just switched my Mint 14 MATE machine to a static IP and my tray icon went away, too. I think it just might be the way MATE works: there are no network connections to manage (nm-tool says "unmanaged") so the tray icon isn't there.

There was another wrinkle, too. After I restarted my machine I had a static IP and could ping a numeric IP address, but I had no DNS even though I had entered my router's IP address as the DNS server in Control Center > Network. I had to do

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sudo nano -w /etc/network/interfaces

and add the line

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dns-nameservers 192.168.1.1

for DNS to work again.

If MATE is a bit shaky with static IP addresses then it might be easier to set up a DHCP Reservation for that machine so it can use DHCP (and continue to be "managed") and still get the same IP address every time.

[aalemann]

Thanks for your answer.

I think it just might be the way MATE works: there are no network connections to manage (nm-tool says "unmanaged") so the tray icon isn't there.

OK, to me that sound reasonable.

The other problem you mentioned (the DNS server) did not appeared for me.