Re: [gentoo-user] OFF TOPIC Need Ubuntu network help

[Mark Knecht <markknecht@gmail.com>]

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On Mon, Oct 16, 2023 at 12:52 AM Dale <rdalek1967@gmail.com> wrote:
>
> Howdy,
>
> I finally got through with my backup restore.  I had shutdown the NAS
> box with Ubuntu on it since I was done with it.  I wanted to do some
> updates and check some other stuff, still learning how Ubuntu works, so
> I rebooted it.  I didn't hook up the drives with my backups on them
> since I don't need them to update and such.  The network not only
> doesn't come up, it is just plain dead.  The LEDs on the card are out,
> the router shows no connection either, not even as inactive.  I did a
> LOT of searching.  Found others with similar problems but nothing
> helped.  I found one thread that was recent and exactly my problem.  It
> appears that after some attempts to figure it out, the guru trying to
> help ran out of ideas.  I'll post a link below.  [1]  It's kinda hard to
> post info since I have no way to get it from the NAS box to my main rig
> since the network isn't working.  That said, when I run lshw -C network,
> it shows it as being disabled.  It looks just like the thread linked
below.
>
> Since this is a built in network port and there is a history of issues
> with those things with me, I installed a PCIe network card.  It shows up
> the same way, disabled.  I rebooted the router just in case.  I also
> checked the BIOS to be sure it was enabled there, some glitch or
> something could have disabled it.  It shows up as enabled.  I checked
> the cable but then I thought of a way to rule out hardware.  I booted a
> Knoppix system that I have on the Ventoy USB stick.  I still love that
> thing.  :-D  The network came up and worked just fine without me doing a
> single thing.  I tried another image, can't recall which, and the
> network worked in it too.  I then said to heck with it, pulled out a
> spare hard drive and put it in place of the current drive with Ubuntu on
> it.  I then tried to install Debian.  Guess what, the network doesn't
> work with it either.  So, boot from USB image, network works.  Boot from
> a hard drive, network dead.
>
> Since the Ubuntu forums are no help, searching didn't help, my last
> resort is to ask here, on a Gentoo forum.  :/  I figure there may be a
> few people here that use Ubuntu on some system and are familiar with
> this.  Given it works on Knoppix and such, it has to be something
> related to Ubuntu and I guess Debian as well.  I downloaded both those
> images a while back.  My first instinct, the updates broke something.
> What's odd, it doesn't work with the USB Debian/Ubuntu images either and
> it worked fine before when I installed from it.
>
> Anyone here have ideas?  Keep in mind, that thing uses systemd.  I
> thought I hated that before.  I truly hate that thing now.  Trying to
> figure out how to restart something is like pulling teeth with no pain
> meds.  Heck, I have to google just to find out what the name of the
> service is because most make no sense.  Still, I'd like to get it
> working.  If not, the 770T may end up with Gentoo yet.
>
> [1]  https://ubuntuforums.org/showthread.php?t=2483647
>
> Thanks.
>
> Dale
>
> :-)  :-)

Dale,
   Sorry for your problems. I have a bunch of Kubuntu and
Ubuntu Server machines here so maybe I can help.

   First, I am NOT understanding your situation completely. I
have a suspicion that possibly you didn't configure a status
ip and something has changed it. That happened to me once
with Ubuntu Server and also with Kubuntu

1) Does your Ubuntu machine have a keyboard and monitor?

2) If it does lets try a couple of commands to get a baseline
and have you post results back

ip l show

route -n

ip r

sudo ifconfig

nmcli device

ping www.yahoo.com

(change enp5s0 as needed)
ip l show enp5s0 | grep --color -w UP


Let's start with that and see where it leads.

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