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#1 2013-10-21 08:59:44

southerncross
Member
Registered: 2010-02-03
Posts: 36

Weird DHCPCD issue

Hello,

Ever since I upgraded to Gnome 3.10, I'm part of the people who have trouble activating my wired/ethernet connection. It's not just a matter of interface though. If I deactivate my wireless (eth0) interface from the menu, the computer (Gnome) automatically switches to "plane mode". I can of course untick that and the gnome settings network entry shows me that I'm connected to the network with a wire. It shows a working connection. Unplugging the ethernet will show me a disabled connection. But regardless of that, my wired connection (eth1) actually does not work no matter what. Only the wifi does. Investigating further I'm wondering what's wrong with my eth1...

Here's a dump of my ifconfig atm:

 ifconfig
eth0: flags=4163<UP,BROADCAST,RUNNING,MULTICAST>  mtu 1500
        inet 192.168.10.105  netmask 255.255.255.0  broadcast 192.168.10.255
        inet6 fe80::c2cb:38ff:fe09:28e  prefixlen 64  scopeid 0x20<link>
        ether c0:cb:38:09:02:8e  txqueuelen 1000  (Ethernet)
        RX packets 448  bytes 104426 (101.9 KiB)
        RX errors 0  dropped 0  overruns 0  frame 211646
        TX packets 344  bytes 33276 (32.4 KiB)
        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0
        device interrupt 17  

eth1: flags=4163<UP,BROADCAST,RUNNING,MULTICAST>  mtu 1500
        inet 192.168.70.100  netmask 255.255.255.0  broadcast 192.168.70.255
        inet6 fe80::f24d:a2ff:fe48:e147  prefixlen 64  scopeid 0x20<link>
        ether f0:4d:a2:48:e1:47  txqueuelen 1000  (Ethernet)
        RX packets 117577  bytes 50406987 (48.0 MiB)
        RX errors 0  dropped 0  overruns 0  frame 0
        TX packets 96855  bytes 28773839 (27.4 MiB)
        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0
        device interrupt 17  

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 0  (Local Loopback)
        RX packets 2000  bytes 160696 (156.9 KiB)
        RX errors 0  dropped 0  overruns 0  frame 0
        TX packets 2000  bytes 160696 (156.9 KiB)
        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0

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#2 2013-10-21 09:07:05

southerncross
Member
Registered: 2010-02-03
Posts: 36

Re: Weird DHCPCD issue

hmm.... okay. Now I would call this my fault, but that's really Gnome this time. Indeed, what I described was true. However, if I PHYSICALLY disable the wifi on my laptop and disable the plane mode, I willl get the wired connection effectively working. What did I do  before? Just untick the wifi button, in other words, disabling it through the software switch. Who knew this... ? It's a big fail for Gnome.

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#3 2013-10-21 09:10:07

southerncross
Member
Registered: 2010-02-03
Posts: 36

Re: Weird DHCPCD issue

Wait. It's getting weirder. I have some sites that works under this connection, but cannot connect to others. (YouTube does not work, Facebook does). What's going on here?

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#4 2013-10-21 16:38:44

WonderWoofy
Member
From: Los Gatos, CA
Registered: 2012-05-19
Posts: 8,412

Re: Weird DHCPCD issue

Since the gnome interface is simply a front end to networkmanager (which is just a front end to the basic networking tools), do things work normally if you use network manager's command line interface, or even the network-manager-applet?

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#5 2013-10-22 09:54:25

southerncross
Member
Registered: 2010-02-03
Posts: 36

Re: Weird DHCPCD issue

What ended up happening and made the weirdness stop was not with Network Manager, but when I eventually killed the dhclient. Then it brought things to normal, or rather, it brought things to this weird beahviour, apparently intended by Gnome, where you now need to kill the physical wifi switch in order to use the wired connection in a proper way. I still think it's odd and extemely confusing....

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