Upgraded to 12.04 from 10.04 and wired/wireless connection not working
I've browsed through multiple threads on this forum, and googled for solutions for over a week, and I'm at my wit's end. I seem to be connecting to wireless networks, but I don't have an internet connection. Same thing happens when I use an ethernet cable: My machine says I'm connected, but I don't an internet connection. I am so close to just reinstalling 10.04. I have an HP dv5 if that matters.
Any help will be much appreciated. sudo lshw -C network Code:
*-network Code:
lo no wireless extensions. Code:
eth0 Link encap:Ethernet HWaddr 00:1e:68:92:9c:32 nm-tool Code:
NetworkManager Tool Code:
Module Size Used by |
How far can you ping? Can you ping your router? What about the DNS servers, 75.75.75.75 and 75.75.76.76?
Can you ping 75.126.162.205 ? This is the IP for linuxquestions. What happens if you disable your firewall? Then try the pings. Everything I see you posted looks good; although I did not verify the correct drivers are loaded. Did you? |
I am having the exact same problem with a new installation of openSuSE 12.1 (see my post below). I will be interested in hearing the solution. I will try your suggestions, Camorri.
I am wondering if I (or we) need to search for the correct firmware for the NIC? Like you, I am on the wireless network, but no internet connection. The other interesting thing about my problem is that I cannot ping other computers, and I cannot ping the default gateway. The only thing I can ping is my loopback address. |
I had the same problem as you, but I noticed that my kernel routing table had the wrong gateway IP address (command: route -n). I have openSuSE, and had to manually configure the gateway IP using YaST. I found out the gateway IP address using the following command in windows: ipconfig /all (I am on a public network).
Once I put in the correct gateway IP, I was able to get on the internet. Check your gateway IP. I hope this helps. |
I'm not exactly sure what I'm looking at. Here's what I get from "route -n"
Code:
Kernel IP routing table |
Do you know the IP address of your router? Try typing it into the URL space of your web browser, and you should see the graphical interface come up for your router. Or, go into Windows and type the command "ipconfig /all". I am not sure if the version of Linux you are using has a graphical interface like YaST. I entered the following under a "router" tab under Network Settings in YaST.
Destination: 0.0.0.0 Gateway: Gateway IP address from the command "ipconfig /all" Genmask: Network Mask IP address from the command "ipconfig /all" Maybe someone can help with the command line required for entering this? I have a feeling you are close to a solution. |
Quote:
In post 2 I asked you to do some pinging. Can you post the results? It will help determine how far you can go. If you are interested, here is a link that describes how to set up the default route. -->http://www.cyberciti.biz/faq/linux-s...route-command/ For you information, the routing table is how your kernel decides to send each IP packet it receives. If it gets a IP that is not in the routing table, it sends it to the default ( your router ) for routing. If the default is not set, or is incorrect, you will not be able to reach the internet. |
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