View Full Version : [SOLVED] Internet connection lost but email still works

November 24th, 2010, 08:21 AM
I am a non-techie, have been gratefully using Ubuntu 8.10 for a few years for the basics: email, web, documents, photos.
I have somehow lost my internet connection, but strangely my email still works...!?!? My router is showing all the correct green lights, but I cannot get to any url. I am posting this thread via work (windows) pc.
I have searched on this forum and in anticipation have done as much homework as possible, see below.
I have a Netgear wired router.
I cannot find Network manager on the menus and tried this from the terminal:

bash: network-manager: command not found

bash: networkmanager: command not found

my netgear router is pinging successfully:

PING ( 56(84) bytes of data.
64 bytes from icmp_seq=1 ttl=64 time=1.81 ms
64 bytes from icmp_seq=2 ttl=64 time=0.814 ms
64 bytes from icmp_seq=3 ttl=64 time=0.804 ms
64 bytes from icmp_seq=4 ttl=64 time=0.809 ms
64 bytes from icmp_seq=5 ttl=64 time=0.808 ms
64 bytes from icmp_seq=6 ttl=64 time=0.740 ms

i have no idea what all this is but it's what i found the gurus asking in other threads:

ifconfig -a

eth1 Link encap:Ethernet HWaddr 00:30:18:a8:46:0a
inet addr: Bcast: Mask:
inet6 addr: fe80::230:18ff:fea8:460a/64 Scope:Link
RX packets:260 errors:0 dropped:0 overruns:0 frame:0
TX packets:259 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000 sudo ifup eth1
ifup: interface eth1 already configured
RX bytes:302998 (302.9 KB) TX bytes:21934 (21.9 KB)

lo Link encap:Local Loopback
inet addr: Mask:
inet6 addr: ::1/128 Scope:Host
RX packets:12 errors:0 dropped:0 overruns:0 frame:0
TX packets:12 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:752 (752.0 B) TX bytes:752 (752.0 B)

pan0 Link encap:Ethernet HWaddr 42:1a:f3:f7:b1:c5
RX packets:0 errors:0 dropped:0 overruns:0 frame:0
TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:0 (0.0 B) TX bytes:0 (0.0 B)

route -n
Kernel IP routing table
Destination Gateway Genmask Flags Metric Ref Use Iface U 1 0 0 eth1 U 1000 0 0 eth1
0. UG 0 0 0 eth1

sudo lshw -C network
description: Ethernet interface
product: Marvell Technology Group Ltd.
vendor: Marvell Technology Group Ltd.
physical id: 0
bus info: pci@0000:01:00.0
logical name: eth1
version: 12
serial: 00:30:18:a8:46:0a
size: 100MB/s
capacity: 100MB/s
width: 64 bits
clock: 33MHz
capabilities: pm msi pciexpress bus_master cap_list ethernet physical tp 10bt 10bt-fd 100bt 100bt-fd autonegotiation
configuration: autonegotiation=on broadcast=yes driver=sky2 driverversion=1.22 duplex=full firmware=N/A ip= latency=0 link=yes module=sky2 multicast=yes port=twisted pair speed=100MB/s
*-network DISABLED
description: Ethernet interface
physical id: 1
logical name: pan0
serial: 42:1a:f3:f7:b1:c5
capabilities: ethernet physical
configuration: broadcast=yes driver=bridge driverversion=2.3 firmware=N/A link=yes multicast=yes

sudo ifup eth0
Ignoring unknown interface eth0=eth0.

sudo ifup eth1
ifup: interface eth1 already configured

00:00.0 Host bridge: Intel Corporation 82945G/GZ/P/PL Memory Controller Hub (rev 02)
00:02.0 VGA compatible controller: Intel Corporation 82945G/GZ Integrated Graphics Controller (rev 02)
00:1b.0 Audio device: Intel Corporation 82801G (ICH7 Family) High Definition Audio Controller (rev 01)
00:1c.0 PCI bridge: Intel Corporation 82801G (ICH7 Family) PCI Express Port 1 (rev 01)
00:1d.0 USB Controller: Intel Corporation 82801G (ICH7 Family) USB UHCI Controller #1 (rev 01)
00:1d.1 USB Controller: Intel Corporation 82801G (ICH7 Family) USB UHCI Controller #2 (rev 01)
00:1d.2 USB Controller: Intel Corporation 82801G (ICH7 Family) USB UHCI Controller #3 (rev 01)
00:1d.3 USB Controller: Intel Corporation 82801G (ICH7 Family) USB UHCI Controller #4 (rev 01)
00:1d.7 USB Controller: Intel Corporation 82801G (ICH7 Family) USB2 EHCI Controller (rev 01)
00:1e.0 PCI bridge: Intel Corporation 82801 PCI Bridge (rev e1)
00:1f.0 ISA bridge: Intel Corporation 82801GB/GR (ICH7 Family) LPC Interface Bridge (rev 01)
00:1f.2 IDE interface: Intel Corporation 82801GB/GR/GH (ICH7 Family) SATA IDE Controller (rev 01)
00:1f.3 SMBus: Intel Corporation 82801G (ICH7 Family) SMBus Controller (rev 01)
01:00.0 Ethernet controller: Marvell Technology Group Ltd. Device 4357 (rev 12)

I also have some screen shots of the "Net Tool" pls asvise if i should post them (apologies I am not at home with my ubuntu machine, I copied all the above to a doc and brought it to work with me)

November 24th, 2010, 08:30 AM
Never heard about this strange problem, but I think it's the router.

November 24th, 2010, 09:24 AM
If you are on 8.10, it is due time to install to an newer version.

8.10 is unsupported and therefore a security threat.


November 24th, 2010, 10:39 AM
just always been scared to upgrade since everytime i go to the forums its always riddled with users having upgrade issues...
But I guess I better heed your advice and take the plunge... or get a mac :-)

November 24th, 2010, 10:48 AM
I just realised - I can't upgrade since I do not have an internet connection.... lovely :-(

so please - can anyone help, so that I can upgrade?

November 24th, 2010, 01:28 PM
Ifconfig shows that eth1 is UP and RUNNING and you have an Internet address - inet addr: So, I guess that you should be connected to a router. When I was using 8.10 I used a dial-up modem. Now I have broadband under 9.10, 10.4 and 10.10 and the menu access to networking tools is much improved. All I can suggest is to look through the trouble shooting guide. It is what I review. Here is the link.


I know it is WiFi but there is information useful of wired connection fault finding.

Is the problem with your web browser? Do you have a firewall installed? Is it blocking access? Have you changed the user permissions and removed access to the internet? I cannot guide you through the steps to check these things. I cannot now remember 8.10 and I have learned a bit more since I was using 8.10 through trying to give help on this forum.


November 24th, 2010, 01:32 PM
Rather go for a clean install than a long series of upgrades

Just keep wired internet access while installing and you should be fine.

November 24th, 2010, 01:36 PM
Thanks people, I guess I will have to do a new install - looks like 10.04 is the preferred choice...

November 24th, 2010, 04:00 PM
Thanks people, I guess I will have to do a new install - looks like 10.04 is the preferred choice...

Have you rebooted your router? Pull out the power code, wait fifteen seconds, and plug it back in. See if your problems disappear.

Torrents in particular can knock a router offline because they establish more simultaneous connections to peers than many routers can handle.

November 24th, 2010, 07:07 PM
If email is working, you have an Internet connection. More than likely you have a DNS problem. Whatever DNS servers your router is looking to for IPs may be down or unreachable for some other reason. Your router may have the IP of your mail server cached, so you can still get mail.

Rebooting your router won't hurt and could even clear up the problem. I'd also look at changing the DNS servers your router looks to as a possible solution.

November 25th, 2010, 07:10 AM
I did try and reboot the router with no success... I decided to uninstall Network Manager from the Synaptic Package Manager, well that was a dumb thing to do, now everything is DOWN. If I boot from the 8.10 CD, all is well, I can connect to www fine... so I am gonna backup files and upgrade to 10.04 - I know that doesn't get to solve the problem here, but at least I will be on a supported version, I'm pretty sure the problem will go away.
Thanks for the responses...

November 25th, 2010, 02:58 PM
Lucid is an LTS, so it should last you a few years. It has worked almost flawlessly for me.

November 26th, 2010, 08:33 AM
ok ok
i am a dumbass
you're not gonna believe it
so I installed 10.04 and guess what? exactly the same thing i.e. emails working, network is connected, but no internet...
so i phoned my isp... wait for it...
I have reached my monthly 1GB cap, need to top up... thanks so much for not letting me know dear ISP grrrrrr.
Well at least I now have a LTS version of Ubuntu! :-)

Apologies for leading you all down the garden path with this...

November 26th, 2010, 09:25 AM
Rofl. Well, none of us answering thought of that, so I guess we all learned something.

Have fun in 10.04.

November 30th, 2010, 12:41 AM
I have reached my monthly 1GB cap, need to top up... thanks so much for not letting me know dear ISP grrrrrr.

That sucks. Oh well. I guess we'll make a note of that one for future reference.

You would think though that since you still have email they would let you know you'd reached your cap.