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Firefox will not access internet in Ubuntu 9.10 or 10.04

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Grand Master

Firefox will not access internet in Ubuntu 9.10 or 10.04

Installed Ubuntu 9.10 and 10.04. Firfeox will not access internet. Works fine in 9.04

This happened

Every time Firefox opened

1 ACCEPTED SOLUTION

Accepted Solutions
Grand Master

Re: Firefox will not access internet in Ubuntu 9.10 or 10.04

SOLVED!

It turned out in my case to be an IPv6 issue.


in etc/systl.conf

all I had to do was add these lines



net.ipv6.conf.all.disable_ipv6 = 1 net.ipv6.conf.default.disable_ipv6 = 1 net.ipv6.conf.lo.disable_ipv6 = 1



If you have problems editing the file

simply open Nautilus as root


sudo nautilus


btw: I commented out the notes but this site would not allow me to post the pound sign

17 REPLIES
Senior User

Re: Firefox will not access internet in Ubuntu 9.10 or 10.04

Hi - which exact problem do you have connecting? Is Ubuntu recognizing your network at all?

If you aren't sure if Ubuntu is connected at all, try running the Ubuntu Update utility in System->Administration. If Ubuntu won't connect at all, you will need to troubleshoot your network connection. If this works, and Firefox doesn't, then you need to check proxy and offline-mode setting in Firefox. To do this:

  1. Open the File menu and verify that Work Offline is not checked. (If it is checked, uncheck it)
  2. Open Edit->Preferences and click the Advanced panel. From there, click the Network tab and press the Settings... button. Make sure No Proxy is selected.
Grand Master

Re: Firefox will not access internet in Ubuntu 9.10 or 10.04

Did this - no change I am afraid. Also checked the 'ping' option - that gave 100% success.

I only get this problem with Ubuntu 9.10 and 10.04 - as I said before, Ubuntu 9.04 is perfect in this respect- why is the diffrence?

Senior User

Re: Firefox will not access internet in Ubuntu 9.10 or 10.04

Was "No Proxy" selected? And does going to http://74.125.19.147 work?

If you're still getting connection errors, paste me the output of these commands:

  • route -n
  • ifconfig
  • netstat -na
Grand Master

Re: Firefox will not access internet in Ubuntu 9.10 or 10.04

Hi I have the same problem, and yes it works with ip address you gave however, it does not access the same with google.com typed in the address bar

Thanks.

Grand Master

Re: Firefox will not access internet in Ubuntu 9.10 or 10.04

I've had this issue before. Changing the settings to "No Proxy" worked once, but it hasn't worked so far. It will, however, be able to go to the ubuntu website and xkcd.

Grand Master

Re: Firefox will not access internet in Ubuntu 9.10 or 10.04

Same problem. ping works, firefox and email (thunderbird) do not. I can access google using the numerical ip address. This sounds like a dns issue. How do we fix this?

Grand Master

Re: Firefox will not access internet in Ubuntu 9.10 or 10.04

Same problem. My firefox and thunderbird work only under sudo. I have two identical machines, one has ubuntu 10.04 the other ubuntu 10.04 + win7. The problem appears in the second. Both has clean ubuntus installations, moreover, the ./mozilla and ./thunderbird folders in my user directory come from ubuntu 9.10 (they were backed up and copied by hand in the new 10.04). All other connections work fine (synaptic, ping ...)

Grand Master

Re: Firefox will not access internet in Ubuntu 9.10 or 10.04

Firefox will only work on google, oddly enough. If I try to open any other website, it doesn't work.

Grand Master

Re: Firefox will not access internet in Ubuntu 9.10 or 10.04

I have a very similar problem. All was working perfectly in Ubuntu 9.04 but with 9.10 and 10.04

  • all* Mozilla products lose connectivity if I reboot my DSL modem. All other browsers such as

Google Chrome and Opera conenct with no problem at all. By making *no* changes to my system, Firefox and Thunderbird little by little start working again and within 2 - 8 hours return to normal

This I consider a major problem!