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Thread: Specific wifi network does not work

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  1. #1

    Default Specific wifi network does not work

    A wifi network does not work on my laptop but works on all other devices.
    It connects but is unable to use it (even ping does not work).
    It works fine with other wifi networks.

    I tried enabling ipv6 but nothing changed.

    How should i start troubleshooting?
    Also this card uses rtl8723de for which I had to set up dkms manually.

  2. #2
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    Default Re: Specific wifi network does not work

    Quote Originally Posted by K380 View Post
    A wifi network does not work on my laptop but works on all other devices.
    It connects but is unable to use it (even ping does not work).
    It works fine with other wifi networks.

    I tried enabling ipv6 but nothing changed.

    How should i start troubleshooting?
    Also this card uses rtl8723de for which I had to set up dkms manually.
    Assuming that you're using NetworkManager, watch the journal logging in a terminal while trying to connect...
    Code:
    sudo journalctl -fu NetworkManager
    openSUSE Leap 15.0; KDE Plasma 5

  3. #3

    Default Re: Specific wifi network does not work

    Code:
    Dec 31 14:18:34 orpheus NetworkManager[1354]: You can find my version in /etc/resolv.conf.netconfig ...
    Dec 31 14:18:34 orpheus NetworkManager[1354]: nisdomainname: you must be root to change the domain name
    Dec 31 14:18:34 orpheus NetworkManager[1354]: <warn>  [1546246114.1986] dns-mgr: could not commit DNS changes: Error calling netconfig: exited with status 20
    Dec 31 14:18:34 orpheus NetworkManager[1354]: <info>  [1546246114.1998] policy: set 'Hotspot1' (wlp2s0) as default for IPv4 routing and DNS
    Dec 31 14:18:34 orpheus NetworkManager[1354]: <info>  [1546246114.2085] audit: op="statistics" arg="refresh-rate-ms" pid=2233 uid=1000 result="success"
    Dec 31 14:18:34 orpheus NetworkManager[1354]: <info>  [1546246114.2216] audit: op="statistics" arg="refresh-rate-ms" pid=2233 uid=1000 result="success"
    Dec 31 14:18:34 orpheus NetworkManager[1354]: <info>  [1546246114.2737] audit: op="statistics" arg="refresh-rate-ms" pid=2233 uid=1000 result="success"
    Dec 31 14:18:34 orpheus NetworkManager[1354]: <info>  [1546246114.3426] audit: op="statistics" arg="refresh-rate-ms" pid=2233 uid=1000 result="success"
    Dec 31 14:18:34 orpheus NetworkManager[1354]: <info>  [1546246114.4028] audit: op="statistics" arg="refresh-rate-ms" pid=2233 uid=1000 result="success"
    Dec 31 14:18:35 orpheus NetworkManager[1354]: <info>  [1546246115.9496] audit: op="statistics" arg="refresh-rate-ms" pid=2233 uid=1000 result="success"
    Ping by ip does work sometimes, ping by website address is too slow and does not work.

  4. #4
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    Default Re: Specific wifi network does not work

    Ping by ip does work sometimes, ping by website address is too slow and does not work.
    I'm not sure what you're trying to convey with that log snippet, and your vague comments above suggest that you do have internet connectivity. Can you resolve internet host names at all?

    Show us
    Code:
    grep name /etc/resolv.conf
    If it really is just slow resolving, you may be able explicitly configure the DNS to servers which have better performance perhaps.
    openSUSE Leap 15.0; KDE Plasma 5

  5. #5

    Default Re: Specific wifi network does not work

    Quote Originally Posted by deano_ferrari View Post
    I'm not sure what you're trying to convey with that log snippet, and your vague comments above suggest that you do have internet connectivity. Can you resolve internet host names at all?

    Show us
    Code:
    grep name /etc/resolv.conf
    If it really is just slow resolving, you may be able explicitly configure the DNS to servers which have better performance perhaps.
    Code:
    nameserver 8.8.8.8
    nameserver 8.8.4.4

  6. #6

    Default Re: Specific wifi network does not work

    ping 8.8.8.8
    Code:
    PING 8.8.8.8 (8.8.8.8) 56(84) bytes of data.
    64 bytes from 8.8.8.8: icmp_seq=4 ttl=122 time=101 ms
    64 bytes from 8.8.8.8: icmp_seq=5 ttl=122 time=12.3 ms
    64 bytes from 8.8.8.8: icmp_seq=6 ttl=122 time=12.3 ms
    64 bytes from 8.8.8.8: icmp_seq=7 ttl=122 time=12.2 ms
    64 bytes from 8.8.8.8: icmp_seq=8 ttl=122 time=12.9 ms
    ^C
    --- 8.8.8.8 ping statistics ---
    8 packets transmitted, 5 received, 37.5% packet loss, time 69ms
    rtt min/avg/max/mdev = 12.212/30.078/100.600/35.261 ms
    ping www.google.com (no output for a long time)
    Code:
    ^C
    again ping 8.8.8.8
    Code:
    PING 8.8.8.8 (8.8.8.8) 56(84) bytes of data.
    ^C
    --- 8.8.8.8 ping statistics ---
    11 packets transmitted, 0 received, 100% packet loss, time 248ms

  7. #7
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    Default Re: Specific wifi network does not work

    Is your router or service provider blocking Google DNS perhaps?

    What happens if you force a DNS update using the following?
    Code:
    sudo netconfig -f update
    Code:
    grep name /etc/resolv.conf
    I assume this will now report/use the DHCP-assigned name server(s)?

    Can you then resolve by host name?
    openSUSE Leap 15.0; KDE Plasma 5

  8. #8
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    Default Re: Specific wifi network does not work

    BTW, I note that your ping responses report significant packet loss...

    Code:
    ping 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=4 ttl=122 time=101 ms
    64 bytes from 8.8.8.8: icmp_seq=5 ttl=122 time=12.3 ms
    64 bytes from 8.8.8.8: icmp_seq=6 ttl=122 time=12.3 ms
    64 bytes from 8.8.8.8: icmp_seq=7 ttl=122 time=12.2 ms
    64 bytes from 8.8.8.8: icmp_seq=8 ttl=122 time=12.9 ms
    ^C
    --- 8.8.8.8 ping statistics ---
    8 packets transmitted, 5 received, 37.5% packet loss, time 69ms
    rtt min/avg/max/mdev = 12.212/30.078/100.600/35.261 ms
    You'll need to investigate this issue, as it will have a huge impact with network services you try to use.
    openSUSE Leap 15.0; KDE Plasma 5

  9. #9
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    Default Re: Specific wifi network does not work

    Most common solution which should be tried before anything else is to reboot your router. If you have physical access but not login credentials, simply pulling the power, waiting 30 seconds and then re-connecting power will recycle successfully.

    TSUc
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  10. #10
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    Default Re: Specific wifi network does not work

    Quote Originally Posted by tsu2 View Post
    Most common solution which should be tried before anything else is to reboot your router. If you have physical access but not login credentials, simply pulling the power, waiting 30 seconds and then re-connecting power will recycle successfully.

    TSUc
    Yes, that's worth a shot as well.
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