Public bug reported:

1) Description: Ubuntu 18.04.3 LTS
Release:        18.04

2) Linux 5.0.0-25-generic

3) What you expected to happen
When rebooting the machine with the ethernet cable plugged in, I would expext 
the ethernet connection to be operational, or at least enable-able.

4) What happened instead
With ethernet plugged in during a reboot (either "restart" or doing a full 
shutdown then powering back on), the machine will boot up, but ethernet fails 
to connect a handful of times before giving up entirely. If the machine is 
rebooted with ethernet unplugged, then the cable is connected after rebooting 
to the desktop, the connection is established as expected. 

I tried a handful of different kernel versions, and it seems that a fix
was introduced between 5.2.3 and 5.2.4 (these were both installed via
ukuu). I found a commit (
https://github.com/torvalds/linux/commit/3618e5919694df536f35b53e94416cb7163606aa
) that seems related, but I'm not certain if that's what fixed the issue
in 5.2.4.

I've tested this on a System76 Darter Pro as well as a Galago Pro and
can reproduce it pretty readily. If I can provide more information,
please let me know.

Thanks!

ProblemType: Bug
DistroRelease: Ubuntu 18.04
Package: linux-image-5.0.0-25-generic 5.0.0-25.26~18.04.1
ProcVersionSignature: Ubuntu 5.0.0-25.26~18.04.1-generic 5.0.18
Uname: Linux 5.0.0-25-generic x86_64
ApportVersion: 2.20.9-0ubuntu7.7
Architecture: amd64
CurrentDesktop: ubuntu:GNOME
Date: Mon Aug 26 12:50:05 2019
InstallationDate: Installed on 2019-08-23 (2 days ago)
InstallationMedia: Ubuntu 18.04 LTS "Bionic Beaver" - Release amd64 (20180426)
ProcEnviron:
 TERM=xterm-256color
 PATH=(custom, no user)
 XDG_RUNTIME_DIR=<set>
 LANG=en_US.UTF-8
 SHELL=/bin/bash
SourcePackage: linux-signed-hwe
UpgradeStatus: No upgrade log present (probably fresh install)

** Affects: linux-signed-hwe (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: amd64 apport-bug bionic

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https://bugs.launchpad.net/bugs/1841465

Title:
  Realtek r8169 driver not working after reboot with ethernet cable
  plugged in

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