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**flying_icarus** · May 09, 2008, 05:56 PM

Re: Kubuntu 8.04: KNetworkManager problem

Hmm, you can always try the manual way... in the konsole.
This should get dhcp to set up connected wired interfaces:

Code:

sudo dhclient

You can manually enable an interface (for instance, the network cable is connected, but the by the lights by the socket are off) with

Code:

sudo ifconfig eth0 up

eth0 is your first ethernet card, eth1 the second, etc.
You can manually set an ip address for the network interface card with

Code:

sudo ifconfig eth0 192.168.1.100 netmask 255.255.255.0

(the first number is the ip adress, the second one is, you guessed it, netmask).
this will not get you to the internet yet, however. If you have a home router/dsl connection, the dhcp should work for you, otherwise you should probbably know what to set for the address and netmask.
So, now you can test to see if you can reach your router, which is usually on the 192.168.1.1 addres, by typing

Code:

ping 192.168.1.1

It should return something like

Code:

PING 192.168.1.1 (192.168.1.1) 56(84) bytes of data.
64 bytes from 192.168.1.1: icmp_seq=1 ttl=64 time=0.890 ms
64 bytes from 192.168.1.1: icmp_seq=2 ttl=64 time=0.612 ms

If it returns timeuts, then you are not in the same address space as the router, and the rest of the stuff will not help you. :| Anyway, stop the ping output with Ctrl+c
To continue the manual setup, you need a gateway, so for our home router example type

Code:

sudo route add default gw 192.168.1.1

Now you can try ping-ing an IP address on the internet (not a "normal" internet server name yet, we need DNS for that), if you know of one, and if it returns timeouts you probbably didn't guess the router IP correctly or the netmask is wrong or you gave yourself a wrong ip address.

Lastly, you should set up dns, which for home dsl routers usually do for you as well, so you need to edit a text file as root - type:

Code:

sudo kwrite

and open the file /etc/resolv.conf
make sure there is only this in it:

Code:

nameserver 192.168.1.1

Now, try surfing, if it works, you can make the setting permanent:

Code:

sudo kwrite

open the file /etc/network/interfaces and for this example it should contain the following:

Code:

auto lo
iface lo inet loopback

auto eth0
iface eth0 inet static
address 192.168.1.100
netmask 255.255.255.0
gateway 192.168.1.1

I know this doesn't help getting the KNetworkManager running, but at least you may be able to look for the solution for that problem on the same machine

**saywhat** · May 16, 2008, 02:33 PM

Re: Kubuntu 8.04: KNetworkManager problem

Originally posted by flying_icarus

To continue the manual setup, you need a gateway, so for our home router example type

Code:

sudo route add default gw 192.168.1.1

I am having the same problem. I tried following your advice, but when I try to add the default gateway, I get the following message:
SIOCADDRT: No such process

Now what?

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Kubuntu 8.04: KNetworkManager problem

Kubuntu 8.04: KNetworkManager problem

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