Upstream said it's more likely to be a kernel or driver issue. Do you
still see the problem in newer Ubuntu versions?
** Package changed: network-manager (Ubuntu) => linux (Ubuntu)
** Changed in: linux (Ubuntu)
Status: Confirmed => Incomplete
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https://bugs.launchpad.net/bugs/1826403
Title:
Ethernet won't connect when cable is plugged in at boot
Status in linux package in Ubuntu:
Incomplete
Bug description:
When booting Ubuntu 19.04 with the Ethernet cable plugged in, after
boot, network manager won't connect. Unplugging and plugging back in
the cable with the system running doesn't work to establish a
connection.
The workaround is to boot with the cable unplugged, then to plug it in
after boot.
This problem emerged immediately following an upgrade from 18.10 to
19.04. On the first boot networking was fine, but from the first
reboot a networking connection through the Ethernet cable couldn't be
established if the cable was plugged in at boot.
This issue is also described here:
https://askubuntu.com/questions/1135412/updated-to-19-04-and-no-
ethernet-now/1135726#1135726 and here: https://ubuntu-
mate.community/t/19-04-ethernet-wired-connection-refuses-to-connect-
when-plugged-in-before-boot/19333/6
ProblemType: Bug
DistroRelease: Ubuntu 19.04
Package: network-manager 1.16.0-0ubuntu2
ProcVersionSignature: Ubuntu 5.0.0-13.14-generic 5.0.6
Uname: Linux 5.0.0-13-generic x86_64
NonfreeKernelModules: nvidia_modeset nvidia
ApportVersion: 2.20.10-0ubuntu27
Architecture: amd64
CurrentDesktop: GNOME
Date: Thu Apr 25 21:50:27 2019
IfupdownConfig:
# interfaces(5) file used by ifup(8) and ifdown(8)
auto enp4s0f1
auto lo
iface lo inet loopback
InstallationDate: Installed on 2018-11-23 (153 days ago)
InstallationMedia: Ubuntu 18.04.1 LTS "Bionic Beaver" - Release amd64
(20180725)
IpRoute:
default via 192.168.11.1 dev enp4s0f1 proto dhcp metric 100
169.254.0.0/16 dev enp4s0f1 scope link metric 1000
192.168.11.0/24 dev enp4s0f1 proto kernel scope link src 192.168.11.13
metric 100
NetworkManager.state:
[main]
NetworkingEnabled=true
WirelessEnabled=false
WWANEnabled=true
SourcePackage: network-manager
UpgradeStatus: Upgraded to disco on 2019-04-25 (0 days ago)
mtime.conffile..etc.NetworkManager.NetworkManager.conf:
2019-04-25T20:03:28.380204
nmcli-dev:
DEVICE TYPE STATE IP4-CONNECTIVITY IP6-CONNECTIVITY
DBUS-PATH CONNECTION CON-UUID
CON-PATH
enp4s0f1 ethernet connected full limited
/org/freedesktop/NetworkManager/Devices/2 Automatic connection
e906293b-df71-435b-8909-7d88ca006540
/org/freedesktop/NetworkManager/ActiveConnection/1
wlp3s0 wifi unavailable limited limited
/org/freedesktop/NetworkManager/Devices/3 -- --
--
lo loopback unmanaged unknown unknown
/org/freedesktop/NetworkManager/Devices/1 -- --
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nmcli-nm:
RUNNING VERSION STATE STARTUP CONNECTIVITY NETWORKING WIFI-HW
WIFI WWAN-HW WWAN
running 1.16.0 connected started full enabled enabled
disabled enabled enabled
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