Lost Internet connection

English Network/Internet
#1

About two months ago my friends bought a new Dell PC with Windows 7 installed and asked me to help them to install OpenSuSE 12.2. so we set up a dual boot system.
Both systems were working perfectly and had access to the internet via a new router from their ISP Demon.
A week ago they completely lost their internet connection, which according to Demon was due to a BT fault, so a considerable time was spent on the phone with the Demon help desk while they were talked through reconfiguring their router in Windows 7.
They now have have an internet connection in Windows 7 but for some reason have no connection in OpenSuse and I can find no way of accessing/connecting to the router.
Can any one suggest what may be wrong and what can be done to resolve the problem?
Sorry this is short on detail but any help gratefully received.

merkland.

#2

On Sun 25 Nov 2012 06:06:01 PM CST, merkland wrote:

About two months ago my friends bought a new Dell PC with Windows 7
installed and asked me to help them to install OpenSuSE 12.2. so we set
up a dual boot system.
Both systems were working perfectly and had access to the internet via
a new router from their ISP Demon.
A week ago they completely lost their internet connection, which
according to Demon was due to a BT fault, so a considerable time was
spent on the phone with the Demon help desk while they were talked
through reconfiguring their router in Windows 7.
They now have have an internet connection in Windows 7 but for some
reason have no connection in OpenSuse and I can find no way of
accessing/connecting to the router.
Can any one suggest what may be wrong and what can be done to resolve
the problem?
Sorry this is short on detail but any help gratefully received.

merkland.

Hi
Not using a static ip address? DNS settings, gateway address.
Check /etc/resolv.conf and YaST network devices.

Is it wireless, maybe check with the rfkill command incase it’s
softblocked.

–
Cheers Malcolm °¿° (Linux Counter #276890)
openSUSE 12.2 (x86_64) Kernel 3.4.11-2.16-desktop
up 1 day 18:22, 6 users, load average: 2.63, 1.97, 1.40
CPU Intel i5 CPU M520@2.40GHz | Intel Arrandale GPU

#3

Sorry I should have said that the PC is connected to the router by an ethernet cable. In YaST network devices/ system settings the settings are as they supposedly should be and worked before the router was reset.

merkland.

#4

On Mon 26 Nov 2012 12:16:03 AM CST, merkland wrote:

malcolmlewis;2506477 Wrote:
> Hi
> Not using a static ip address? DNS settings, gateway address.
> Check /etc/resolv.conf and YaST network devices.
>
> Is it wireless, maybe check with the rfkill command incase it’s
> softblocked.
>

Sorry I should have said that the PC is connected to the router by an
ethernet cable. In YaST network devices/ system settings the settings
are as they supposedly should be and worked before the router was reset.

merkland.

Hi
So what do you see when you type the command;


/sbin/route
cat /etc/resolv.conf

If the route command hangs, then restart the network;


su -
rcnetwork restart

–
Cheers Malcolm °¿° (Linux Counter #276890)
openSUSE 12.2 (x86_64) Kernel 3.4.11-2.16-desktop
up 2 days 0:37, 4 users, load average: 0.09, 0.06, 0.13
CPU Intel i5 CPU M520@2.40GHz | Intel Arrandale GPU

#5

Many thanks for your help Malcolm. I will hope to get to my friends this afternoon and check it out.

merkland.

#6

Malcolm,

This is what I got when following the commands you gave:

 	 	 	   david@linux-5j3i:~> /sbin/route

Kernel IP routing table
Destination Gateway Genmask Flags Metric Ref Use Iface
loopback * 255.0.0.0 U 0 0 0 lo
link-local * 255.255.0.0 U 0 0 0 eth0
david@linux-5j3i:~> cat /etc/resolv.conf

/etc/resolv.conf file autogenerated by netconfig!

Before you change this file manually, consider to define the

static DNS configuration using the following variables in the

/etc/sysconfig/network/config file:

NETCONFIG_DNS_STATIC_SEARCHLIST

NETCONFIG_DNS_STATIC_SERVERS

NETCONFIG_DNS_FORWARDER

or disable DNS configuration updates via netconfig by setting:

NETCONFIG_DNS_POLICY=’’

See also the netconfig(8) manual page and other documentation.

Note: Manual change of this file disables netconfig too, but

may get lost when this file contains comments or empty lines

only, the netconfig settings are same with settings in this

file and in case of a “netconfig update -f” call.

Please remove (at least) this line when you modify the file!

david@linux-5j3i:~>

Hope this give you the information required to tell us what we need to do!

merkland.

#7

On Mon 26 Nov 2012 05:56:01 PM CST, merkland wrote:

malcolmlewis;2506537 Wrote:
> Hi
> So what do you see when you type the command;
> >
Code:

> >
> /sbin/route
> cat /etc/resolv.conf
>

> >
> If the route command hangs, then restart the network;
> >
Code:

> >
> su -
> rcnetwork restart
>

> >
>
> –
> Cheers Malcolm °¿° (Linux Counter #276890)
> openSUSE 12.2 (x86_64) Kernel 3.4.11-2.16-desktop
> up 2 days 0:37, 4 users, load average: 0.09, 0.06, 0.13
> CPU Intel i5 CPU M520@2.40GHz | Intel Arrandale GPU

Malcolm,

This is what I got when following the commands you gave:

david@linux-5j3i:~> /sbin/route
Kernel IP routing table
Destination Gateway Genmask Flags Metric Ref
Use Iface
loopback * 255.0.0.0 U 0 0
0 lo
link-local * 255.255.0.0 U 0 0
0 eth0
david@linux-5j3i:~> cat /etc/resolv.conf

/etc/resolv.conf file autogenerated by netconfig!

Before you change this file manually, consider to define the

static DNS configuration using the following variables in the

/etc/sysconfig/network/config file:

NETCONFIG_DNS_STATIC_SEARCHLIST

NETCONFIG_DNS_STATIC_SERVERS

NETCONFIG_DNS_FORWARDER

or disable DNS configuration updates via netconfig by setting:

NETCONFIG_DNS_POLICY=’’

See also the netconfig(8) manual page and other documentation.

Note: Manual change of this file disables netconfig too, but

may get lost when this file contains comments or empty lines

only, the netconfig settings are same with settings in this

file and in case of a “netconfig update -f” call.

Please remove (at least) this line when you modify the file!

david@linux-5j3i:~>

Hope this give you the information required to tell us what we need to
do!

merkland.

Hi
Faulty cable or faulty card or faulty router port…

Replace the cable and/or swap to a different router port.

Are there Tx/Rx leds on the ethernet port? Are they on?

Or are they connecting via PPOE (or similar) in windows?

–
Cheers Malcolm °¿° (Linux Counter #276890)
openSUSE 12.2 (x86_64) Kernel 3.4.11-2.16-desktop
up 2 days 18:09, 5 users, load average: 0.15, 0.12, 0.19
CPU Intel i5 CPU M520@2.40GHz | Intel Arrandale GPU

#8

I don’t think the above is valid as when the PC boots to Windows 7 using same ethernet card and cable there is no problem with connection to internet. It would appear that when Demon re-configured the router they have done something which prevents the automatic DHCP cofiguration from finding the required IP address in OpenSUSE 12.2 .
My problem is I don’t have the technical knowledge to properly understand all this all I can do is follow instructions from some one more knowledgeable!

merkland.

#9

On Mon 26 Nov 2012 08:36:01 PM CST, merkland wrote:

malcolmlewis;2506707 Wrote:
> Hi
> Faulty cable or faulty card or faulty router port…
>
> Replace the cable and/or swap to a different router port.
>
> Are there Tx/Rx leds on the ethernet port? Are they on?
>
> Or are they connecting via PPOE (or similar) in windows?
>
> –
> Cheers Malcolm °¿° (Linux Counter #276890)
> openSUSE 12.2 (x86_64) Kernel 3.4.11-2.16-desktop
> up 2 days 18:09, 5 users, load average: 0.15, 0.12, 0.19
> CPU Intel i5 CPU M520@2.40GHz | Intel Arrandale GPU

I don’t think the above is valid as when the PC boots to Windows 7
using same ethernet card and cable there is no problem with connection
to internet. It would appear that when Demon re-configured the router
they have done something which prevents the automatic DHCP cofiguration
from finding the required IP address in OpenSUSE 12.2 .
My problem is I don’t have the technical knowledge to properly
understand all this all I can do is follow instructions from some one
more knowledgeable!

merkland.

Hi
On the windows system, Start, then in the search files etc enter cmd
and hit enter, in the terminal enter ipconfig.
http://paste.opensuse.org/24337411

Duplicate the info in either NetworkManager or YaST via traditional
method.

–
Cheers Malcolm °¿° (Linux Counter #276890)
openSUSE 12.2 (x86_64) Kernel 3.4.11-2.16-desktop
up 2 days 21:00, 5 users, load average: 0.23, 0.17, 0.14
CPU Intel i5 CPU M520@2.40GHz | Intel Arrandale GPU

#10

On 2012-11-26 21:36, merkland wrote:

> I don’t think the above is valid as when the PC boots to Windows 7
> using same ethernet card and cable there is no problem with connection
> to internet. It would appear that when Demon re-configured the router
> they have done something which prevents the automatic DHCP cofiguration
> from finding the required IP address in OpenSUSE 12.2 .

Any chance to know what they changed in Windows, do they remember?

The command “ipconfig” in Windows would be interesting to see, as
Malcolm says.

–
Cheers / Saludos,

Carlos E. R.
(from 11.4 x86_64 “Celadon” (Minas Tirith))

#11

On Mon 26 Nov 2012 11:34:11 PM CST, Carlos E. R. wrote:

On 2012-11-26 21:36, merkland wrote:

> I don’t think the above is valid as when the PC boots to Windows 7
> using same ethernet card and cable there is no problem with connection
> to internet. It would appear that when Demon re-configured the router
> they have done something which prevents the automatic DHCP
> cofiguration from finding the required IP address in OpenSUSE 12.2 .

Any chance to know what they changed in Windows, do they remember?

The command “ipconfig” in Windows would be interesting to see, as
Malcolm says.

Hi
Yes, I wonder if the router/connection has been re-configured for
IPV6?

–
Cheers Malcolm °¿° (Linux Counter #276890)
openSUSE 12.2 (x86_64) Kernel 3.4.11-2.16-desktop
up 2 days 23:47, 5 users, load average: 0.06, 0.17, 0.13
CPU Intel i5 CPU M520@2.40GHz | Intel Arrandale GPU

#12

Thank you Malcolm.
Hope to try this out this evening or tomorrow.

merkland.

#13

I feel like I am banging my head against a brick wall - and it hurts!
This is the result of Ipconfig:
Microsoft Windows [Version 6.1.7601]
Copyright (c) 2009 Microsoft Corporation. All rights reserved.
C:\Users\david>ipconfig
Windows IP Configuration
Wireless LAN adapter Wireless Network Connection 2:
Media State . . . . . . . . . . . : Media disconnected
Connection-specific DNS Suffix . :
Wireless LAN adapter Wireless Network Connection:
Media State . . . . . . . . . . . : Media disconnected
Connection-specific DNS Suffix . :
Ethernet adapter Local Area Connection:
Connection-specific DNS Suffix . :
Link-local IPv6 Address . . . . . : fe80::b402:d3ca:88ba:76fc%11
IPv4 Address. . . . . . . . . . . : 192.168.254.201
Subnet Mask . . . . . . . . . . . : 255.255.255.0
Default Gateway . . . . . . . . . : 192.168.254.254
Tunnel adapter isatap.{D2FCEA12-40BB-4465-A5EA-204A3B206766}:
Media State . . . . . . . . . . . : Media disconnected
Connection-specific DNS Suffix . :
Tunnel adapter Local Area Connection* 9:
Connection-specific DNS Suffix . :
IPv6 Address. . . . . . . . . . . : 2001:0:5ef5:79fb:2cf8:3f9d:c1c7:9967
Link-local IPv6 Address . . . . . : fe80::2cf8:3f9d:c1c7:9967%12
Default Gateway . . . . . . . . . : ::
Tunnel adapter isatap.{BC03C277-D3FE-48F1-9399-426157440FE6}:
Media State . . . . . . . . . . . : Media disconnected
Connection-specific DNS Suffix . :
Tunnel adapter isatap.{452E67CB-0757-4763-B64F-50BCC5EFBB22}:
Media State . . . . . . . . . . . : Media disconnected
Connection-specific DNS Suffix . :

The section I have marked in italic bold I assumed was the information I needed.

I am obviously very stupid because I am unable to make any of the settings work in system settings!

As Dynamic Address settings DHCP, and DHCP both versions 4and 6, was not working I tried to use the Statically assigned IP address but was unable to get it to work- did not seem to matter what I put in for the IP address I got the same error message - invalid IP address.
I am obviously doing something wrong.
Can you tell what I should put where to make it work?

merkland.

#14

On 2012-11-28 20:56, merkland wrote:
>
> I feel like I am banging my head against a brick wall - and it hurts!
> This is the result of Ipconfig:


> Microsoft Windows [Version 6.1.7601]
> Copyright (c) 2009 Microsoft Corporation.  All rights reserved.
> C:\Users\david>ipconfig
> Windows IP Configuration
> Wireless LAN adapter Wireless Network Connection 2:
> Media State . . . . . . . . . . . : Media disconnected
> Connection-specific DNS Suffix  . :
> Wireless LAN adapter Wireless Network Connection:
> Media State . . . . . . . . . . . : Media disconnected
> Connection-specific DNS Suffix  . :
> -*Ethernet adapter Local Area Connection:*-
> -*Connection-specific DNS Suffix  . :*-
> -*Link-local IPv6 Address . . . . . : fe80::b402:d3ca:88ba:76fc%11*-
> -*IPv4 Address. . . . . . . . . . . : 192.168.254.201*-
> -*Subnet Mask . . . . . . . . . . . : 255.255.255.0*-
> -*Default Gateway . . . . . . . . . : 192.168.254.254*-
> Tunnel adapter isatap.{D2FCEA12-40BB-4465-A5EA-204A3B206766}:
> Media State . . . . . . . . . . . : Media disconnected
> Connection-specific DNS Suffix  . :
> Tunnel adapter Local Area Connection* 9:
> Connection-specific DNS Suffix  . :
> IPv6 Address. . . . . . . . . . . : 2001:0:5ef5:79fb:2cf8:3f9d:c1c7:9967
> Link-local IPv6 Address . . . . . : fe80::2cf8:3f9d:c1c7:9967%12
> Default Gateway . . . . . . . . . : ::
> Tunnel adapter isatap.{BC03C277-D3FE-48F1-9399-426157440FE6}:
> Media State . . . . . . . . . . . : Media disconnected
> Connection-specific DNS Suffix  . :
> Tunnel adapter isatap.{452E67CB-0757-4763-B64F-50BCC5EFBB22}:
> Media State . . . . . . . . . . . : Media disconnected
> Connection-specific DNS Suffix  . :

>
>
> The section I have marked in italic bold I assumed was the
> information I needed.

All that gets lost when I see it as plain text via nntp :slight_smile:

I actually would prefer to see it inside code tags. But I can read it.

Posting in
Code Tags - A Guide

There is something strange above: the tunnel connection. What is that?

On the other hand you appear to have both IPv4 and IPv6.

>
> I am obviously very stupid because I am unable to make any of the
> settings work in system settings!
>
> As Dynamic Address settings DHCP, and DHCP both versions 4and 6, was
> not working I tried to use the Statically assigned IP address but was
> unable to get it to work- did not seem to matter what I put in for the
> IP address I got the same error message - invalid IP address.
> I am obviously doing something wrong.
> Can you tell what I should put where to make it work?

You mean that with this data:

192.168.254.201 mask 255.255.255.0 GW 192.168.254.254

you got “invalid address”? Who/what said that?

–
Cheers / Saludos,

Carlos E. R.
(from 12.1 x86_64 “Asparagus” at Telcontar)

#15

On Wed 28 Nov 2012 07:56:01 PM CST, merkland wrote:

-IPv4 Address. . . . . . . . . . . : 192.168.254.201-
-Subnet Mask . . . . . . . . . . . : 255.255.255.0-
-Default Gateway . . . . . . . . . : 192.168.254.254-

The section I have marked in italic bold I assumed was the
information I needed.

I am obviously very stupid because I am unable to make any of the
settings work in system settings!

As Dynamic Address settings DHCP, and DHCP both versions 4and 6, was
not working I tried to use the Statically assigned IP address but was
unable to get it to work- did not seem to matter what I put in for the
IP address I got the same error message - invalid IP address.
I am obviously doing something wrong.
Can you tell what I should put where to make it work?

merkland.

Hi
Via YaST network devices?

I would use YaST and set to traditional if up and an ip address of
192.168.254.100 255.255.255.0 and in the GW 192.168.254.254

In the host tab you need to add the DNS server, use 192.168.254.254 and
8.8.8.8

–
Cheers Malcolm °¿° (Linux Counter #276890)
openSUSE 12.2 (x86_64) Kernel 3.4.11-2.16-desktop
up 1 day 9:30, 4 users, load average: 0.35, 0.29, 0.17
CPU Intel i5 CPU M520@2.40GHz | Intel Arrandale GPU

#16

Malcolm,

I am getting a little confused over terminology.
To clarify exactly what is meant I hve taken some screen prints from Yast/Network settings on my PC( not the problem one)
file:///home/john/Screen1.jpeg Not sure that this link will work but it is the first screen in Yast/NetworkSettings which has the Tabs :Global Options, Overview, Hostname/DNS, and Routing across the top.
When you say “In the host tab you need to add the DNS server, use 192.168.254.254 and 8.8.8.8” do you mean in the Hostname/DNS tab?
file:///home/john/Screen2.jpeg This is the edit screen for the Ethernet eth0.
I should select ‘Statically assigned IP Address’ and enter the three values you quoted in the three boxes below? Are Hostname and GW two names for the same thing?
Sorry for being so obtuse but when you are over 70 the brain no longer works as well as it once did, particularly with unfamiliar subjects !

merkland.

#17

On Thu 29 Nov 2012 11:26:01 AM CST, merkland wrote:

malcolmlewis;2507424 Wrote:
> Hi
> Via YaST network devices?
>
> I would use YaST and set to traditional if up and an ip address of
> 192.168.254.100 255.255.255.0 and in the GW 192.168.254.254
>
> In the host tab you need to add the DNS server, use 192.168.254.254
> and 8.8.8.8
>
> –
> Cheers Malcolm °¿° (Linux Counter #276890)
> openSUSE 12.2 (x86_64) Kernel 3.4.11-2.16-desktop
> up 1 day 9:30, 4 users, load average: 0.35, 0.29, 0.17
> CPU Intel i5 CPU M520@2.40GHz | Intel Arrandale GPU

Malcolm,

I am getting a little confused over terminology.
To clarify exactly what is meant I hve taken some screen prints from
Yast/Network settings on my PC( not the problem one)
[image: file:///home/john/Screen1.jpeg] Not sure that this link will
work but it is the first screen in Yast/NetworkSettings which has the
Tabs :Global Options, Overview, Hostname/DNS, and Routing across the
top.
When you say “In the host tab you need to add the DNS server, use
192.168.254.254 and 8.8.8.8” do you mean in the Hostname/DNS tab?
[image: file:///home/john/Screen2.jpeg] This is the edit screen for the
Ethernet eth0.
I should select ‘Statically assigned IP Address’ and enter the three
values you quoted in the three boxes below? Are Hostname and GW two
names for the same thing?
Sorry for being so obtuse but when you are over 70 the brain no longer
works as well as it once did, particularly with unfamiliar subjects !

merkland.

Hi
So open YaST network settings and set to traditional ifup and uncheck
the box change default route via dhcp;
http://thumbnails101.imagebam.com/22320/fa4592223195547.jpg](http://www.imagebam.com/image/fa4592223195547)

Select the overview tab, select the device and then press edit;
http://thumbnails102.imagebam.com/22320/acf231223195558.jpg](http://www.imagebam.com/image/acf231223195558)

On the address tab enter your information and then hit the next button
for adding wireless info (if that’s the device you selected) either way
there will be an ok button when done to return to the main network
settings;
http://thumbnails103.imagebam.com/22320/8bbca4223195566.jpg](http://www.imagebam.com/image/8bbca4223195566)

In the hostname/dns tab enter the info as required;
http://thumbnails105.imagebam.com/22320/dc821e223195574.jpg](http://www.imagebam.com/image/dc821e223195574)

Now on the Routing tab add the gateway address and finally press ok.
http://thumbnails104.imagebam.com/22320/9190f9223195585.jpg](http://www.imagebam.com/image/9190f9223195585)

–
Cheers Malcolm °¿° (Linux Counter #276890)
openSUSE 12.2 (x86_64) Kernel 3.4.11-2.16-desktop
up 2 days 2:30, 4 users, load average: 0.22, 0.33, 0.29
CPU Intel i5 CPU M520@2.40GHz | Intel Arrandale GPU

#18

On 2012-11-29 12:26, merkland wrote:

> Malcolm,

> [image: file:///home/john/Screen1.jpeg] Not sure that this link will
> work

It doesn’t, it is a local file on your computer.

> Are Hostname and GW two
> names for the same thing?

No, GW is gateway.

–
Cheers / Saludos,

Carlos E. R.
(from 12.1 x86_64 “Asparagus” at Telcontar)

#19

Malcolm,

Thank you for a very comprehensive set of instructions - they should be preserved as a sticky.
I have arranged with my friends that we will follow the instructions tomorrow morning and report back.

Carlos E.R.,

Thank you for your contributions.

merkland.

#20

Hallelujah! Success.

A very heartfelt thank you, especially from my friends who now have a fully functioning internet connection.

Again, thank you Malcolm and Carlos E.R. for all your help.

merkland.