How to remove a damaged Wired Connection

[Chas IRONS]

Hello all. I hope you can help.
My terminal command skills are limited as a retired end user of Ubuntu
(since 05.04).

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.
Settings/Network/Options for the eth0 Wired entry shows "Error Editing
connection: Did not find a connection with UUID '(null)'"
because I did "delete" but it still appears. I cannot find a way to
remove this entry in Ubuntu users guide.

The upper Wired entry is working (TIAllAccess wireless eth1)
When I click on Menu bar/Edit Connections it shows only one Ethernet
router (TIAllAccess wireless eth1).
Then I click on Menu bar/Edit Connections/Edit TIAllAccess and it shows
the MAC details of the router (eth1).
After I click on Menu bar/Connection Information it shows details of
the router (eth1).

Please tell me how to remove the second Wired Connection. 
Maybe that will allow my browsers to connect to eth1 (the TIAllAccess
wireless) when it is already running; it does not switch off and on
again easily.

Maybe the Syslog snippets below will help? (that I found when I scanned
there for some details)

*********
devices added (path:
/sys/devices/pci0000:00/0000:00:1c.2/0000:03:00.0/net/eth0, iface:
eth0)
Aug 28 11:54:26 Charles-PC NetworkManager[2350]:
<info>  [1472378066.2036] device added (path:
/sys/devices/pci0000:00/0000:00:1c.2/0000:03:00.0/net/eth0, iface:
eth0): no ifupdown configuration found.
********
Aug 28 11:54:26 Charles-PC NetworkManager[2350]:
<info>  [1472378066.2036] settings: loaded plugin ifupdown: (C) 2008
Canonical Ltd.  To report bugs please use the NetworkManager mailing
list. (/usr/lib/x86_64-linux-gnu/NetworkManager/libnm-settings-plugin-
ifupdown.so)
***********
keyfile: new connection /etc/NetworkManager/system-connections/Wi-Fi
connection 2 (83c73dc1-d951-4d72-a919-13631ee95fca,"Wi-Fi 2")
********
NetworkManager[2350]: <info>  [1472378067.5006] manager: (eth0): new
Ethernet device (/org/freedesktop/NetworkManager/Devices/1)
Aug 28 11:54:27 Charles-PC NetworkManager[2350]:
<info>  [1472378067.5012] device (eth0): state change: unmanaged ->
unavailable (reason 'managed') [10 20 2]
Aug 28 11:54:27 Charles-PC kernel: [   25.609959] IPv6:
ADDRCONF(NETDEV_UP): eth0: link is not ready
Aug 28 11:54:27 Charles-PC NetworkManager[2350]:
nm_device_get_device_type: assertion 'NM_IS_DEVICE (self)' failed
Aug 28 11:54:27 Charles-PC NetworkManager[2350]:
<info>  [1472378067.7994] device (lo): link connected
Aug 28 11:54:27 Charles-PC NetworkManager[2350]:
<info>  [1472378067.7998] manager: (lo): new Generic device
(/org/freedesktop/NetworkManager/Devices/2)
Aug 28 11:54:27 Charles-PC kernel: [   25.907292] r8169 0000:03:00.0
eth0: link down
Aug 28 11:54:27 Charles-PC kernel: [   25.907351] IPv6:
ADDRCONF(NETDEV_UP): eth0: link is not ready
Aug 28 11:54:27 Charles-PC NetworkManager[2350]:
<info>  [1472378067.8743] urfkill disappeared from the bus

-- 



  
  


irons.charles at gmail.com

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