Having Network Manager set to use dnsmasq doesn't get along very well with Comcast, using the suggestion of commenting out the dnsmasq line from /etc/NetworkManager/NetworkManager.conf and restarting the network- manager service fixed the problem for me.
As usual, the rolling list of crap I have to edit by hand to work around Ubuntu's bugs that they can't or won't fix or claim is not a bug continues to grow. Changing the problem to "Incomplete" instead of attempting to figure out what got you to the point where you have broken internet access for millions of Comcast users and hoping the problem fades off into the sunset with not another word spoken about it exemplifies everything I've come to expect from Ubuntu developers. How about reverting it to the way it was in 11.10, which wasn't broken, and letting the few users who actually NEED dnsmasq turn it on themselves. Radical concept? -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to network-manager in Ubuntu. https://bugs.launchpad.net/bugs/989900 Title: DNS Resolve Problems in Ubuntu 12.04 Status in “network-manager” package in Ubuntu: Confirmed Bug description: I just updated to Ubuntu 12.04. After the update I cannot resolve hostnames reliably: I use Konsole in Unity. There sometimes the DNS resolving works fine and suddenly after two commands or so it fails for the same address. E.g. I ping a machine without DNS-Suffix (the suffix is shown in my network config correctly aside 3 valid nameserver IPs) and everything works fine. Then I try to log into the machine with the same address via ssh and I get a "Name or service not known". Trying again, it works with a fully qualified name containing the suffix. I also had cases, when the IP wasn't resolved although I put in the fully qualified name. When I am more lucky, it starts working again with machine names only (without suffix, which is configured and worked perfectly up to now) Is there probably a bug in the new Ubuntu Version? --- ApportVersion: 2.0.1-0ubuntu7 Architecture: amd64 DistroRelease: Ubuntu 12.04 IfupdownConfig: auto lo iface lo inet loopback InstallationMedia: Ubuntu 12.04 LTS "Precise Pangolin" - Release amd64 (20120425) IpRoute: default via 192.168.1.1 dev wlan0 proto static 169.254.0.0/16 dev wlan0 scope link metric 1000 192.168.1.0/24 dev wlan0 proto kernel scope link src 192.168.1.2 metric 2 NetworkManager.state: [main] NetworkingEnabled=true WirelessEnabled=true WWANEnabled=true WimaxEnabled=true NonfreeKernelModules: nvidia Package: network-manager 0.9.4.0-0ubuntu4 PackageArchitecture: amd64 ProcEnviron: TERM=xterm PATH=(custom, no user) LANG=en_US.UTF-8 SHELL=/bin/bash ProcVersionSignature: Ubuntu 3.2.0-24.38-generic 3.2.16 RfKill: 0: phy0: Wireless LAN Soft blocked: no Hard blocked: no Tags: precise Uname: Linux 3.2.0-24-generic x86_64 UpgradeStatus: No upgrade log present (probably fresh install) UserGroups: adm cdrom dip lpadmin netdev plugdev sambashare sudo mtime.conffile..etc.NetworkManager.NetworkManager.conf: 2012-05-09T05:01:02.241358 nmcli-con: NAME UUID TYPE TIMESTAMP TIMESTAMP-REAL AUTOCONNECT READONLY DBUS-PATH Wired connection 1 a76f352c-6e8c-49c7-bc05-b890445abb22 802-3-ethernet 1336943434 Sun 13 May 2012 05:10:34 PM EDT yes no /org/freedesktop/NetworkManager/Settings/1 Ladner Computer Repair L.N.A 47560d22-54ec-491b-b90f-a41535d69f00 802-11-wireless 1337213171 Wed 16 May 2012 08:06:11 PM EDT yes no /org/freedesktop/NetworkManager/Settings/0 nmcli-dev: DEVICE TYPE STATE DBUS-PATH wlan0 802-11-wireless connected /org/freedesktop/NetworkManager/Devices/1 eth0 802-3-ethernet unavailable /org/freedesktop/NetworkManager/Devices/0 nmcli-nm: RUNNING VERSION STATE NET-ENABLED WIFI-HARDWARE WIFI WWAN-HARDWARE WWAN running 0.9.4.0 connected enabled enabled enabled enabled disabled To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/network-manager/+bug/989900/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : [email protected] Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp
