installed connman and it trashed my network

[Marius Gedminas]

On Thu, Oct 18, 2012 at 09:48:29PM -0700, Florin Andrei wrote:
> Then I read on the openconnect site that there's a GUI manager for
> openconnect, called connman, and I decided to install it. HUGE
> MISTAKE.
> 
> Networking is offline. The network indicator has disappeared from
> the panel.

That's because network-manager was removed when you installed connman.

> /etc/network/interfaces has been reduced to a skeleton
> with only the lo interface in it.

This is normal.

> I uninstalled connman but the system is still offline.
> 
> What can I do to fix it?

Reinstall the packages that were removed when you installed connman.
These were probably network-manager and network-manager-gnome.  You can
check /var/log/dpkg.log to be sure, and I think Software Center's
history tab should also show you what packages were removed recently.

You probably need to get the network back up before you can do that.  If
you can't figure out connman, you'll need to bring it up manually.

Do you use wifi or wired?  Wired is simpler: open a terminal and do

  ifconfig eth0 up
  dhclient eth0

(this assumes your wired network interface is detected as 'eth0'; run
ifconfig -a to see the names).

Wired is harder because you need to also specify the network SSID with
iwconfig.  And if you use WPA or something, the encryption method and
keys.

HTH,
Marius Gedminas
-- 
If you are angry with someone, you should walk a mile in their shoes... then
you'll be a mile away from them, and you'll have their shoes.
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