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Thread: Recent Tumbleweed update broke my internet connection

  1. #1

    Default Recent Tumbleweed update broke my internet connection

    Like the title says, I've tried running
    Code:
    zypper dup
    as usual to update the system, on two different days this week. Both times I've had to rollback to the previous snapshot because something that's getting updated breaks my WiFi connection - it says it's connected, but there is no connection to the internet. Any help would be amazing, since I don't have the experience with this kind of thing to track down what's going wrong.

    I can ping numerical IPs like 8.8.8.8, but not things like google.com.

    The WiFi device is an Intel WiFi 6 AX200, driver in use is iwlwifi.

    Not sure if it makes much difference, but I'm on Tumbleweed running Cinnamon.

  2. #2
    Join Date
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    Default Re: Recent Tumbleweed update broke my internet connection

    So it is NOT the connection to the Internet, it is a failure of DNS resolution.

    Check /etc/resolv.conf
    Henk van Velden

  3. #3

    Default Re: Recent Tumbleweed update broke my internet connection

    Just looked, but there's nothing there. As in, that file has one commented line that says Generated by NetworkManager.

    I should probably mention that I had network issues when I first installed fresh back in May. The current issue may or may not be related, but I figured it provides a little more context at least: https://www.reddit.com/r/openSUSE/co...eweed_install/

  4. #4
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    Default Re: Recent Tumbleweed update broke my internet connection

    Quote Originally Posted by sm-wilson View Post
    Like the title says, I've tried running
    Code:
    zypper dup
    as usual to update the system, on two different days this week. Both times I've had to rollback to the previous snapshot because something that's getting updated breaks my WiFi connection - it says it's connected, but there is no connection to the internet. Any help would be amazing, since I don't have the experience with this kind of thing to track down what's going wrong.

    I can ping numerical IPs like 8.8.8.8, but not things like google.com.

    The WiFi device is an Intel WiFi 6 AX200, driver in use is iwlwifi.

    Not sure if it makes much difference, but I'm on Tumbleweed running Cinnamon.
    The above is well known behavior. You may consider switching to systemd-resolved: Disable Changes To DNS Through Netconfig, Enable Network Name Resolution
    i7-6700K (2016), i5-8250U (2018), AMD Ryzen 5 3400G (2020), 5600X, 5700U (2022) openSUSE Tumbleweed, KDE Plasma

  5. #5
    Join Date
    Sep 2012
    Posts
    8,021

    Default Re: Recent Tumbleweed update broke my internet connection

    Quote Originally Posted by sm-wilson View Post
    Just looked, but there's nothing there [presumably in /etc/resolv.conf].
    Then DNS resolution obviously does not work. What are you using - wicked or NetworkManager? Show
    Code:
    ls -l /etc/resolv.conf
    cat /etc/resolv.conf
    grep hosts /etc/nsswitch.conf

  6. #6

    Default Re: Recent Tumbleweed update broke my internet connection

    Quote Originally Posted by arvidjaar View Post
    Then DNS resolution obviously does not work. What are you using - wicked or NetworkManager? Show
    Code:
    ls -l /etc/resolv.conf
    cat /etc/resolv.conf
    grep hosts /etc/nsswitch.conf
    What I meant by "nothing there" is that the file doesn't contain anything besides a single comment, "Generated by NetworkManager." The file itself is there, in /etc/resolv.conf, it just doesn't have anything besides that comment. I'm using NetworkManager.

  7. #7

    Default Re: Recent Tumbleweed update broke my internet connection

    ls -l /etc/resolv.conf
    -rw-r--r-- 1 root root 276 Aug 16 2022 /etc/resolv.conf


    cat /etc/resolv.conf
    # Generated by NetworkManager
    nameserver 1.1.1.1
    nameserver 1.0.0.1
    nameserver 192.168.0.1
    # NOTE: the libc resolver may not support more than 3 nameservers.
    # The nameservers listed below may not be recognized.
    nameserver 2606:4700:4700::1111
    nameserver 2606:4700:4700::1001


    grep hosts /etc/nsswitch.conf
    # Valid databases are: aliases, ethers, group, gshadow, hosts,
    hosts: files mdns_minimal [NOTFOUND=return] dns

  8. #8
    Join Date
    Sep 2012
    Posts
    8,021

    Default Re: Recent Tumbleweed update broke my internet connection

    Quote Originally Posted by sm-wilson View Post
    ls -l /etc/resolv.conf
    -rw-r--r-- 1 root root 276 Aug 16 2022 /etc/resolv.conf


    cat /etc/resolv.conf
    # Generated by NetworkManager
    It is not standard configuration for openSUSE but it should work.
    nameserver 1.1.1.1
    nameserver 1.0.0.1
    nameserver 192.168.0.1
    # NOTE: the libc resolver may not support more than 3 nameservers.
    # The nameservers listed below may not be recognized.
    nameserver 2606:4700:4700::1111
    nameserver 2606:4700:4700::1001
    This file is not empty. This file defines three nameservers (IPv6 addresses won't be used as glibc only uses the first three addesses). Both Cloudflare addresses 1.1.1.1 and 1.0.0.1 seem to work from here. I do not know whether 192.168.0.1 is correct for you, it may come from your router via DHCP.

    Can you reach all these three addresses?
    Code:
    ping -c 3 1.1.1.1
    ping -c3 1.0.0.1
    ping -c3 192.168.0.1
    can you resolve using these addresses explicitly?
    Code:
    dig @1.1.1.1 forums.opensuse.org
    dig @1.0.0.1 forums.opensuse.org
    dig @192.168.0.1 forums.opensuse.org
    And please use tags [code]...[/code] around computer text. You demonstrated in the first post that you are aware of them.

  9. #9

    Default Re: Recent Tumbleweed update broke my internet connection

    Quote Originally Posted by arvidjaar View Post
    This file is not empty.
    True, it isn't now. When I looked at that file it was - granted I opened it from my Ubuntu install on the same PC since I'm not having any issues there. Trying to troubleshoot and responding online with network issues is pretty cumbersome as you might imagine.

    I've since rolled back to the snapshot before running the update which caused my issues. In order to answer your questions I'll need to re-run the update, assuming the issue will return, to see if I'm able to. Is there anything you'd recommend trying before running the update?

  10. #10
    Join Date
    Sep 2012
    Posts
    8,021

    Default Re: Recent Tumbleweed update broke my internet connection

    Quote Originally Posted by sm-wilson View Post
    I've since rolled back to the snapshot before running the update which caused my issues.
    Well, we have no way to guess what problem was. If you have persistent journal, providing journalctl output for the time you observed this issue may give some hints. Otherwise running this as root when you have the issue
    Code:
    LANG=C date
    LANG=C NetworkManager --print-config
    LANG=C nmcli device show
    LANG=C ls -l /etc/resolv.conf
    cat /etc/resolv.conf
    provides some starting points. First run the same commands now, before you update, to establish baseline. Upload both results to https://susepaste.org

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