Internet is dying

[Colin Law]

On 21 October 2017 at 13:29, Volker Wysk <post at volker-wysk.de> wrote:
> Hello
>
> My internet connection has become fickle. It happens that  there suddenly is no
> more internet connection at all. When I "ping" some site, then there is no
> output at all. KDE say that the IP of my machine can't be acquired.

Does that error appear in the terminal? What is the exact error, it
sounds a bit odd that it is the ip of your machine that cannot be
acquired, I would have expected it to be the destination machine,
suggesting a DNS problem as Xen has suggested.

Colin

> Then I
> can't contact my laptop, which is connected to the same router, either. Not
> even my dynamic DNS address (same machine) can be accessed. Then I have
> to reboot to get the connection back.
>
> That used to be once or twice a day, but now it looks like it happens all the
> time.
>
> There are some suspicious messages in /var/log/syslog and /var/log/kern.log.
>
> In syslog:
>
> Oct 21 13:20:26 desktop NetworkManager[1271]:  * Awakening mail retriever
> agent:
> Oct 21 13:20:26 desktop NetworkManager[1271]: run-parts: /etc/resolvconf/
> update-libc.d/fetchmail exited with return code 1
> Oct 21 13:20:27 desktop NetworkManager[1271]: run-parts: /etc/resolvconf/
> update.d/libc exited with return code 1
> Oct 21 13:20:27 desktop NetworkManager[1271]: <warn>  [1508584827.4409] dns-
> mgr: resolvconf failed with status 256
> Oct 21 13:20:27 desktop NetworkManager[1271]: <warn>  [1508584827.4411] dns-
> mgr: could not commit DNS changes: resolvconf failed with status 256
> Oct 21 13:20:27 desktop NetworkManager[1271]: <info>  [1508584827.4412] device
> (enp2s0): Activation: successful, device activated.
>
> In kern.log:
>
> Oct 21 13:20:26 desktop NetworkManager[1271]: <info>  [1508584826.1508]
> manager: NetworkManager state is now CONNECTED_LOCAL
> Oct 21 13:20:26 desktop NetworkManager[1271]: <info>  [1508584826.2337]
> manager: NetworkManager state is now CONNECTED_GLOBAL
> Oct 21 13:20:26 desktop NetworkManager[1271]: <info>  [1508584826.2340]
> policy: set 'Kabelnetzwerkverbindung 1' (enp2s0) as default for IPv4 routing
> and DNS
> Oct 21 13:20:26 desktop NetworkManager[1271]: <info>  [1508584826.2344] dns-
> mgr: Writing DNS information to /sbin/resolvconf
> Oct 21 13:20:27 desktop NetworkManager[1271]: <warn>  [1508584827.4409] dns-
> mgr: resolvconf failed with status 256
> Oct 21 13:20:27 desktop NetworkManager[1271]: <warn>  [1508584827.4411] dns-
> mgr: could not commit DNS changes: resolvconf failed with status 256
> Oct 21 13:20:27 desktop NetworkManager[1271]: <info>  [1508584827.4412] device
> (enp2s0): Activation: successful, device activated.
>
> Please help!
>
> Volker
>
>
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