Hi I had this problem before, and being the idiot I was, just backed up my files like on USB thumb drive and Google drive and reinstalled 14.04 Trusty. But I didn't give up so easily this time.
Everytime I upgrade to 14.10 Utopic (Mr. Shuttleworth really comes up with cute names !) DNS doesn't work.
I know my other computer a Windows Vista aroudn 5+ years old and a Samsung Galaxy Tab 3 running Android as well as my cell phone, Saumsung S4 both worked fine with my ISP Rogers cable in Ontario, Canada both last time andd this. So I decided to use OpenDNS. Well to set it up I followed this link http://askubuntu.com/questions/2321/...nge-the-dns-ip
and using the last advice with 3 votes
sudo nano /etc/resolvconf/resolv.conf.d/head of course you can use gedit
The best way to set a nameserver via the CLI, without NetworkManger, with a static address, or independent of the connection is this:
Install the resolvconf package.
sudo nano /etc/resolvconf/resolv.conf.d/head
(ignore the scary warning. /etc/resolv.conf is autogenerated, so the warning is there so it will get put in /etc/resolv.conf when /etc/resolv.conf is generated.) To the end of the file, add
Press Ctrl x and answer yes to saving the file. To finish up, regenerate /etc/resolv.conf so the changes are applied right now:
sudo resolvconf -u
and it worked changing nameserver to 220.... in regards to Google DNSserver 18.104.22.168. as on my personal experience, I had a Nuance recruiter contact me, I don't trust Google and their chief of engineering Ray Kurzweil (who owns Nuance) who I think does read e-mail (I use GMail) probably with an AI assistant, hey it is Kurzweil who I consider Rudolph Steiner accurately predicted as Ahriman in 2000 A.D., so prefer not to have Google know even more of my Internet usage by using it's DNS.
So there is some bug in Ubuntu 14.10 which doesn't get the name server right. I am not an expert on DNS and I doubt even the great god of the Internet for Google Vint Cerf knows it, I suggest someone at Canonical and whoever is development team have a look at it. I am too lazy and just not willing to report a bug report as I find it annoying, I get bombarded with all updates on my e-mail account regarding the bug report.