How to remove a damaged Wired Connection

[Chas IRONS]

Hi Ralf, thanks for your reply. See mine inserted below.
On Sun, 2016-08-28 at 16:22 +0200, Ralf Mardorf wrote:
> On Sun, 28 Aug 2016 15:18:15 +0200, Chas IRONS wrote:
> > 
> > My Settings/Network shows two Wired entries (because my ADSL
> > service
> > was poor so my ISP gave me a wireless router that works) but my
> > browser
> > will not connect if the router is switched on first.
> > 
> > The lower Wired entry for the eth0 DSL router shows "Cable
> > unplugged"
> > because it was replaced by the eth1 wireless router.
> Hi,
> 
> could it be, that you switched from PPPoE to DHCP, but you still
> connect by cable and not by wifi? There was likely an issue with the
> modem and not with ADSL, so the modem to dial up was replaced by the
> router. The router likely provides LAN and WLAN.
I think you are right. The wireless router is connected to my USB port
because my desktop does not have a wireless card installed. It does not
connect by cable to the Internet card though. The service from my ISP
is through a SIM card in the router.
> However, wifi unlikely is eth1, it should be wlan0, wlan1 ... wlann.
> 
> What's the output of
> 
>   lsb_release -rc; ifconfig -a
> 

chas at Charles-PC:~$ lsb_release -rc; ifconfig -a
Release:	16.04
Codename:	xenial
eth0      Link encap:Ethernet  HWaddr 10:c3:7b:6a:c5:ea  
          UP BROADCAST MULTICAST  MTU:1500  Metric:1
          RX packets:0 errors:0 dropped:0 overruns:0 frame:0
          TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000 
          RX bytes:0 (0.0 B)  TX bytes:0 (0.0 B)
eth1      Link encap:Ethernet  HWaddr 3c:1e:04:96:54:05  
          inet
addr:192.168.0.100  Bcast:192.168.0.255  Mask:255.255.255.0
          inet6 addr: fe80::3e1e:4ff:fe96:5405/64 Scope:Link
          inet6 addr: fc00::3e1e:4ff:fe96:5405/64 Scope:Global
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:35687 errors:0 dropped:0 overruns:0 frame:0
          TX packets:32279 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000 
          RX bytes:22535304 (22.5 MB)  TX bytes:4018013 (4.0 MB)
lo        Link encap:Local Loopback  
          inet addr:127.0.0.1  Mask:255.0.0.0
          inet6 addr: ::1/128 Scope:Host
          UP LOOPBACK RUNNING  MTU:65536  Metric:1
          RX packets:11764 errors:0 dropped:0 overruns:0 frame:0
          TX packets:11764 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1 
          RX bytes:1320544 (1.3 MB)  TX bytes:1320544 (1.3 MB)
chas at Charles-PC:~$ 
> ?
> 
> I can't help you with Network Manager and also not really with wifi in
> general, since I'm using a router by LAN, not by WLAN.
> 
> However, is your wifi thingy up?
> 
> If I connect a wifi thingy by USB, "ifconfig -a" shows it...
> 
> 
> 
>   $ ifconfig -a
>   enp3s0: flags=4163<UP,BROADCAST,RUNNING,MULTICAST>  mtu 1500
>           [snip]
> 
>   lo: flags=73<UP,LOOPBACK,RUNNING>  mtu 65536
>           [snip]
> 
>   wlp0s19f3u1: flags=4098<BROADCAST,MULTICAST>  mtu 1500
>           [snip]
> 
> 
> 
> ...but it's not shown by ifconfig...
> 
> 
> 
>   $ ifconfig
>   enp3s0: flags=4163<UP,BROADCAST,RUNNING,MULTICAST>  mtu 1500
>           [snip]
> 
>   lo: flags=73<UP,LOOPBACK,RUNNING>  mtu 65536
>           [snip]
> 
> 
> 
> It requires to bring the Interface up...
> 
> 
> 
>   $ sudo ip link set wlp0s19f3u1 up
> 
> 
> 
> ...then its shown:
> 
> 
> 
>   $ ifconfig
>   enp3s0: flags=4163<UP,BROADCAST,RUNNING,MULTICAST>  mtu 1500
>           [snip]
> 
>   lo: flags=73<UP,LOOPBACK,RUNNING>  mtu 65536
>           [snip]
> 
>   wlp0s19f3u1: flags=4099<UP,BROADCAST,MULTICAST>  mtu 1500
>           [snip]
> 

I hope the output that I pasted above shows what you expect. I just
wonder if eth0 being disabled is what blocks eth1 from connecting?
I assume if I remove the internet card from my desktop, that the eth0
Wired connection entry would disappear. However we should get fibre-
optic telecommunications installed in the next month or two; then that
might connect to the internet card?
Thanks for helping me with the basics.
> 
> 
> Regards,
> Ralf
> 
> 
> 
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