[ SOLVED ] No Ethernet

[Moltke]

Glad you solved it @Derekfg

[rokytnji]

Sometimes the cord or plug on the motherboard can go bad. In my experience. Yours sounds like one of those problems. Where the chip is seen. But the connection point is fubar.

[Derekfg]

I went out and bought one of these https://www.umart.com.au/umart1/pro/Products-details.phtml?id=10&bid=4&id2=265&sid=99674

And i went into my computers BIOS and disabled the onboard LAN and i now have my ethernet working.

Thanks for your help Moltke.

[Moltke]

ok i added the code in /etc/apt/sources.list and done what that link says and still no ethernet

What code did you add in sources.list? That file is intended only for repositories.

Do the following; open a terminal and run these commands:

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sudo dhclient -r This command will release your current ip configuration then do

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sudo dhclient to get a new fresh ip configuration. Try that and see if that works.

Hope this helps!

[Derekfg]

ok i added the code in /etc/apt/sources.list and done what that link says and still no ethernet.

[Moltke]

That post in that link is exactly the same as my problem, but where do i add the

Which one? There are two of them.

And when i do su and enter my password it says su: Authentication failure.

Why do you need su for? As far as I remember root account password is locked by default in Ubuntu and I believe it is too in LL since it's based on it. Sudo command is not enough? Try sudo su and see if that works.

[Derekfg]

That post in that link is exactly the same as my problem, but where do i add the

auto eth0
iface eth0 inet dhcp

And when i do su and enter my password it says su: Authentication failure.

[Moltke]

Moltke, cheers for the help.

lspci | egrep -i --color 'network|ethernet'

01:00.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller (rev 11)

Well, a google search does show some results:
https://askubuntu.com/questions/937334/ethernet-not-working-on-ubuntu-16-04-using-realtek-rtl8101-2-6e-pci-express-fast
https://askubuntu.com/questions/933055/ubuntu-16-04-realtek-rtl8111-8168-8411-ethernet-driver-is-not-maintaining-a-pers

Read those and see if you find something that can help in solving your issue.

[Derekfg]

Moltke, cheers for the help.

lspci | egrep -i --color 'network|ethernet'

01:00.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller (rev 11)

[Moltke]

Hi @Derekfg

What's your network device? Open whisker menu and type system, this should bring "system info/profiler" or something like that - my system's Spanish - open the program and look under pci devices for your network card, or open a terminal and type

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lspci | egrep -i --color 'network|ethernet' which will show your network card but you won't see which driver's used while in the GUI you will, it's up  to you which one to use.
With this information you may google to find out on whether or not issues have been reported for this device in linux, and if so maybe some solutions as well.

Hope this helps!

[Derekfg]

In the terminal i get these results:

ifconfig

enp1s0    Link encap:Ethernet  HWaddr 70:85:c2:2a:6c:f4 
          inet6 addr: fe80::6bdb:4f92:6fa6:b8b8/64 Scope:Link
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:252 errors:0 dropped:222 overruns:0 frame:0
          TX packets:179 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000
          RX bytes:15120 (15.1 KB)  TX bytes:31885 (31.8 KB)

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:2664 errors:0 dropped:0 overruns:0 frame:0
          TX packets:2664 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1
          RX bytes:211992 (211.9 KB)  TX bytes:211992 (211.9 KB)

Looks like the ethernet is seen but not connecting for some reason. Can somebody help me out me please ?

Derek.

[Derekfg]

Hello, since i got my computer back after i had trouble with the boot menu my Ethernet connection has stopped working.

 The modem i use is a TP-LINK TD-W8960N and the wifi works as i`m using it with my laptop to post on here, but the ethernet does not.

Any help would be appreciated.