Public bug reported:
Ubuntu 20.04
network-manager:
Installed: 1.20.4-2ubuntu2
Candidate: 1.20.4-2ubuntu2
Version table:
*** 1.20.4-2ubuntu2 500
500 http://gb.archive.ubuntu.com/ubuntu focal/main amd64 Packages
100 /var/lib/dpkg/status
After going to kernel 5.4, from 5.3, I noticed the network systray
roundel going 'round and 'round. On closer examination I could see that
the Wi-fi had connected but the Ethernet connection was "obtaining IP
address" --> fail --> back to "obtaining IP address" and continually
going around and around.
Doing a "service NetworkManager stop" and quickly following up with
"service NetworkManager start" fixes the situation. However, if you
leave any kind of a gap between the stop and start the issue described
above starts up again.
I also left a freshly booted system for quite a while and went back to
it but the issue was still there, until the workaround described above
was performed.
Booting up in to kernel 5.3 the issue is not seen and all network
interfaces connect as expected.
ProblemType: Bug
DistroRelease: Ubuntu 20.04
Package: network-manager 1.20.4-2ubuntu2
Uname: Linux 5.4.2-050402-generic x86_64
NonfreeKernelModules: nvidia_modeset nvidia
ApportVersion: 2.20.11-0ubuntu9
Architecture: amd64
CurrentDesktop: KDE
Date: Thu Dec 5 15:24:51 2019
IfupdownConfig:
# interfaces(5) file used by ifup(8) and ifdown(8)
auto lo
iface lo inet loopback
InstallationDate: Installed on 2017-12-06 (729 days ago)
InstallationMedia: Ubuntu 17.10 "Artful Aardvark" - Release amd64 (20171018)
SourcePackage: network-manager
UpgradeStatus: Upgraded to focal on 2019-11-13 (21 days ago)
nmcli-nm:
RUNNING VERSION STATE STARTUP CONNECTIVITY NETWORKING WIFI-HW WIFI
WWAN-HW WWAN
running 1.20.4 connected started full enabled enabled
enabled enabled enabled
** Affects: network-manager (Ubuntu)
Importance: Undecided
Status: New
** Tags: amd64 apport-bug focal third-party-packages
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https://bugs.launchpad.net/bugs/1855297
Title:
NetworkManager service fails to secure Ethernet connection when using
kernel 5.4
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