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Thread: No internet after upgrade to 17.10

  1. #1
    Join Date
    Dec 2005
    Location
    Louisiana
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    212
    Distro
    Ubuntu Gnome

    No internet after upgrade to 17.10

    I'm a sitting duck over here too after the upgrade. The only thing in my network interfaces file is

    auto lo
    iface lo inet loopback

    I can ping the router but that's it. I'm not getting any DNS resolve

    Should I have auto eth0 in there too?

  2. #2
    Join Date
    Aug 2005
    Location
    South Carolina, USA
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    24,999
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    Ubuntu 19.10 Eoan Ermine

    Re: Upgraded to Ubuntu 17.10 - no internet

    We'd like to see the actual reply to:
    Code:
    ping -c3 8.8.8.8
    Should I have auto eth0 in there too?
    Not usually; Network Manager should do the job quite well.
    "Oh, Ubuntu, you are my favorite Linux-based operating system" --Dr. Sheldon Cooper, Ph.D., Sc.D.

  3. #3
    Join Date
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    Ubuntu Gnome

    Re: Upgraded to Ubuntu 17.10 - no internet

    ifconfig -a
    Code:
     eth0: flags=4163<UP,BROADCAST,RUNNING,MULTICAST>  mtu 1500
            inet 192.168.1.28  netmask 255.255.255.0  broadcast 192.168.1.255
            inet6 fe80::290:f5ff:fef9:7088  prefixlen 64  scopeid 0x20<link>
            ether 00:90:f5:f9:70:88  txqueuelen 1000  (Ethernet)
            RX packets 4650  bytes 775566 (775.5 KB)
            RX errors 0  dropped 0  overruns 0  frame 0
            TX packets 4396  bytes 491696 (491.6 KB)
            TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0
    
    lo: flags=73<UP,LOOPBACK,RUNNING>  mtu 65536
            inet 127.0.0.1  netmask 255.0.0.0
            inet6 ::1  prefixlen 128  scopeid 0x10<host>
            loop  txqueuelen 1000  (Local Loopback)
            RX packets 6795  bytes 513537 (513.5 KB)
            RX errors 0  dropped 0  overruns 0  frame 0
            TX packets 6795  bytes 513537 (513.5 KB)
            TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0
    
    wlan0: flags=4098<BROADCAST,MULTICAST>  mtu 1500
            ether a0:88:69:39:b3:45  txqueuelen 1000  (Ethernet)
            RX packets 0  bytes 0 (0.0 B)
            RX errors 0  dropped 0  overruns 0  frame 0
            TX packets 0  bytes 0 (0.0 B)
            TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0
    ping results
    Code:
     ping -c3 8.8.8.8
    PING 8.8.8.8 (8.8.8.8) 56(84) bytes of data.
    64 bytes from 8.8.8.8: icmp_seq=1 ttl=56 time=31.3 ms
    64 bytes from 8.8.8.8: icmp_seq=2 ttl=56 time=39.7 ms
    64 bytes from 8.8.8.8: icmp_seq=3 ttl=56 time=37.9 ms
    
    --- 8.8.8.8 ping statistics ---
    3 packets transmitted, 3 received, 0% packet loss, time 2003ms
    rtt min/avg/max/mdev = 31.358/36.343/39.750/3.603 ms
    
    ping -c3 192.168.1.1
    PING 192.168.1.1 (192.168.1.1) 56(84) bytes of data.
    64 bytes from 192.168.1.1: icmp_seq=1 ttl=64 time=7.83 ms
    64 bytes from 192.168.1.1: icmp_seq=2 ttl=64 time=6.03 ms
    64 bytes from 192.168.1.1: icmp_seq=3 ttl=64 time=3.97 ms
    
    ping -c3 www.ubuntu.com
    ping: www.ubuntu.com: Name or service not known
    iwconfig
    Code:
    iwconfig
    wlan0     IEEE 802.11  ESSID:off/any  
              Mode:Managed  Access Point: Not-Associated   Tx-Power=off   
              Retry short limit:7   RTS thr:off   Fragment thr:off
              Power Management:off
              
    lo        no wireless extensions.
    
    eth0      no wireless extensions.
    Thanks.
    Last edited by wildmanne39; October 20th, 2017 at 01:15 AM. Reason: Added code tags

  4. #4
    Join Date
    Aug 2005
    Location
    South Carolina, USA
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    24,999
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    Ubuntu 19.10 Eoan Ermine

    Re: Upgraded to Ubuntu 17.10 - no internet

    CONNECTIONS.AVAILABLE-CONNECTIONS[1]: 62893167-6aa4-3d7e-a6f4-423ca687cb5f | Wired connection 1
    IP4.ADDRESS[1]: 192.168.1.178/24
    IP4.GATEWAY: 192.168.1.1
    IP4.DNS[1]: 8.8.8.8
    IP4.DNS[2]: 8.8.4.4
    Do these settings come from the router; i.e. is Network Manager set for DHCP or are there custom settings that you've added?
    ping -c3 8.8.8.8
    PING 8.8.8.8 (8.8.8.8) 56(84) bytes of data.
    64 bytes from 8.8.8.8: icmp_seq=1 ttl=56 time=31.3 ms
    You are getting to the internet, but no names are resolved.

    Interesting.

    BTW, I have upgraded to 17.10 and everything works as expected. I don't suspect a systemic issue or bug, so far.
    "Oh, Ubuntu, you are my favorite Linux-based operating system" --Dr. Sheldon Cooper, Ph.D., Sc.D.

  5. #5
    Join Date
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    Louisiana
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    Re: Upgraded to Ubuntu 17.10 - no internet

    No custom settings, DHCP is set to automatic.
    I get a ? across my network icon. Wireless doesn't work either.
    But I can get across my internal network OK
    I rebooted the router for good measure.

    the broadcast IP is internal, that should be my external IP.

  6. #6
    Join Date
    Dec 2005
    Location
    Louisiana
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    Distro
    Ubuntu Gnome

    Re: Upgraded to Ubuntu 17.10 - no internet

    Now it gets interesting.
    I use PIA vpn. Just turned it on and I'm connected to the internet. Go figure.

  7. #7
    Join Date
    Feb 2008
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    Texas
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    27,692
    Distro
    Ubuntu 18.04 Bionic Beaver

    Re: Upgraded to Ubuntu 17.10 - no internet

    Please do not hijack someone else's thread it is better to start your own so both of you can get the help you deserve.

    Please use code tags - if you are using New Reply button - highlight text and use the # button in the text box header.

    If using Quick Reply then [code] at the beginning and [/code] at the end.

    Thanks

  8. #8
    Join Date
    Dec 2005
    Location
    Louisiana
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    Distro
    Ubuntu Gnome

    Re: Upgraded to Ubuntu 17.10 - no internet

    Quote Originally Posted by wildmanne39 View Post
    Please do not hijack someone else's thread it is better to start your own so both of you can get the help you deserve.

    Please use code tags - if you are using New Reply button - highlight text and use the # button in the text box header.

    If using Quick Reply then [code] at the beginning and [/code] at the end.

    Thanks
    My apologies. It looked like the same issue to me.

  9. #9
    Join Date
    Dec 2005
    Location
    Louisiana
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    Distro
    Ubuntu Gnome

    Re: No internet after upgrade to 17.10

    Well this just keeps getting weirder for me.
    I removed PIA and it didn't change anything. I removed the network connection via NM and added another.
    I tried OpenDNS in the settings. Reboot, reboot, still no connection.
    What's really strange is that I can open a Kubuntu Virtual Machine on the same laptop (System76 Kudo) and it will connect to the internet no problem.
    VirtualBox using a bridged connection. Settings are identical to the main machine.
    So something is blocking that network adapter mac address maybe?

    I also have a vanilla Ubuntu installed on a virtual machine on my MacMini. Just testing the beta out. Guess what? No network connection today.
    Totally different machine. I have no idea? But that one is easy. I can just remove it.

    So in the meantime, I'll just put PIA back on and let it load at startup until I can sort it out.

  10. #10
    Join Date
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    Location
    Louisiana
    Beans
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    Distro
    Ubuntu Gnome

    Re: No internet after upgrade to 17.10

    Fixed! This link
    Code:
    https://askubuntu.com/questions/622470/dns-probe-finished-bad-config-error-in-ubuntu-14-04/622493#622493
    These commands
    Code:
    sudo dpkg-reconfigure resolvconf
    
    Say yes to "prepare /etc/resolve.conf for dynamic updates?"
    
    sudo reboot

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