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Re: My wired connection doesn't work suddenly (Debian sid)

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	Hi.

On Sun, Aug 26, 2018 at 07:42:31AM -0300, Vinícius Couto wrote:
> Hi,
> 
> I use Debian sid and some weeks ago, a upgrade in some package caused a
> strange thing.
> 
> I use my computer, when my wired connection down. Sometimes only the IPv4,
> sometimes all the connections.

Yet another NetworkManager fault, most likely. The thing lives to its
reputation once more.


> The symbol of the wired connection says that the connection is working.
> When i disable to use a wireless connection in the same network, it works.

Of all the ways to test network connection you just used the least
informative one. Please share the output of "ip a l" and "ip ro l" next
time this happens.


> When i use dmesg | grep r8169
> r8169 Gigabit Ethernet driver 2.3LK-NAPI loaded
> r8169 0000:02:00.0 eth0: RTL8168evl/8111evl at 0x        (ptrval), ..., XID
> ... IRQ ..
> r8169 0000:02:00.0 eth0: jumbo features [frames: 9200 bytes, tx
> checksumming: ko]

Pretty normal.

> r8169 0000:02:00.0 enp2s0: renamed from eth0

That's systemd thing.

> r8169 0000:02:00.0: firmware: direct-loading firmware rtl_nic/rtl8168e-3.fw

And here you've used non-free blob, which is most likely completely
unnecessary. But it's unlikely that any of these are somehow related to
your problem.


> dmesg | grep enp2s0
> TCP: enp2s0: Driver has suspect GRO implementation, TCP performance may be
> compromised.

And that says that your NIC has problematic Generic Receive Offload
implementation, yet kernel enabled it.
Try "ethtool -K enp2s0 gro off" if it bothers you, but it'll unlikely
will have any visible effect.

> What is happening to my computer?

Network Manager. See above.

Reco

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Thread

My wired connection doesn't work suddenly (Debian sid) Vinícius Couto <vimcless@gmail.com> - 2018-08-26 13:10 +0200
  Re: My wired connection doesn't work suddenly (Debian sid) Reco <recoverym4n@gmail.com> - 2018-08-26 15:00 +0200
    Re: My wired connection doesn't work suddenly (Debian sid) Gene Heskett <gheskett@shentel.net> - 2018-08-26 15:50 +0200
      iproute, NM and ifupdown (was: My wired connection doesn't work  suddenly (Debian sid)) Pascal Hambourg <pascal@plouf.fr.eu.org> - 2018-08-26 16:30 +0200
        Re: iproute, NM and ifupdown (was: My wired connection doesn't work suddenly (Debian sid)) Gene Heskett <gheskett@shentel.net> - 2018-08-26 17:30 +0200
          Re: iproute, NM and ifupdown Pascal Hambourg <pascal@plouf.fr.eu.org> - 2018-08-26 19:40 +0200
            Re: iproute, NM and ifupdown Gene Heskett <gheskett@shentel.net> - 2018-08-26 20:30 +0200
              Re: iproute, NM and ifupdown David Wright <deblis@lionunicorn.co.uk> - 2018-08-27 22:00 +0200
                Re: iproute, NM and ifupdown Gene Heskett <gheskett@shentel.net> - 2018-08-28 01:30 +0200
                Re: iproute, NM and ifupdown David Wright <deblis@lionunicorn.co.uk> - 2018-08-28 20:20 +0200
                Re: iproute, NM and ifupdown Gene Heskett <gheskett@shentel.net> - 2018-08-28 21:00 +0200
                Re: iproute, NM and ifupdown Timothy M Butterworth <timothy.m.butterworth@gmail.com> - 2018-08-28 21:10 +0200
                Re: iproute, NM and ifupdown David Wright <deblis@lionunicorn.co.uk> - 2018-08-28 22:00 +0200

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