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** Changed in: linux (Ubuntu)
       Status: New => Incomplete

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  Ethernet connection lost after few minutes since starting

Status in linux package in Ubuntu:
Status in network-manager package in Ubuntu:

Bug description:
  This is the same bug I notified at Bug #1770848 but with a more precise 
selection of (what I think it is) the package affected and a better description.

  I made a few days ago a fresh install of the Kubuntu 18.04 LTS and it
  is most everything Ok, but -I think that- the network-manager has a

  In the last LTS version, Kubuntu 16.04, nor in any Linux version if I
  remember well, I never lost connection through Ethernet (the only
  Internet connection with our desktop PC), but the Bionic Beaver loses
  the connection every now and then, perhaps within few minutes or
  hours, but several times per day.

  When the connection is lost, I note that it disappears any info even
  mention to any network into the network window and the network manager
  icon becomes red color.

  Not matter if I unplug and then plug the ethernet cable again, the
  ethernet connection is not longer detected and only restarting the PC
  makes the connection to work again.

  Incidentally, I also have noticed with this version of Kubuntu 18.04
  that in my laptop there is also now a similar problem with the
  scanner: If I plug it in some USB port of the laptop once Kubuntu
  18.04 is already running, it's not detected by Xsane. I have to plug
  it in before than pressing the power button or at the time of starting
  the OS, for the scanner to be detected by the scanning program (and
  then only works with Xsane, not if I use Simple Scan or Skanlite, even
  when it works under Xsane), as I said in the Bug #1771525 and, evenly,
  if I unplug the scanner cable from the USB port it is not detected
  anymore when plugging it again, and only restarting the laptop makes
  it to be detected.

  ProblemType: Bug
  DistroRelease: Ubuntu 18.04
  Package: network-manager 1.10.6-2ubuntu1
  ProcVersionSignature: Ubuntu 4.15.0-20.21-generic 4.15.17
  Uname: Linux 4.15.0-20-generic x86_64
  ApportVersion: 2.20.9-0ubuntu7
  Architecture: amd64
  CurrentDesktop: KDE
  Date: Thu May 17 08:24:23 2018
   # interfaces(5) file used by ifup(8) and ifdown(8)
   auto lo
   iface lo inet loopback
  InstallationDate: Installed on 2018-05-11 (5 days ago)
  InstallationMedia: Kubuntu 18.04 LTS "Bionic Beaver" - Release amd64 
   default via dev enp0s7 proto static metric 100 dev enp0s7 scope link metric 1000 dev enp0s7 proto kernel scope link src metric 100
   enp0s7    no wireless extensions.
   lo        no wireless extensions.
  SourcePackage: network-manager
  UpgradeStatus: No upgrade log present (probably fresh install)
   NAME                 UUID                                  TYPE      
READONLY  DBUS-PATH                                   ACTIVE  DEVICE  STATE     
 ACTIVE-PATH                                         SLAVE 
   Conexión cableada 1  1cc37db8-0db8-3887-acf2-59fbbcd0cb1c  ethernet  
1526538083  jue 17 may 2018 08:21:23 CEST  yes          4294967196            
no        /org/freedesktop/NetworkManager/Settings/1  yes     enp0s7  activated 
 /org/freedesktop/NetworkManager/ActiveConnection/1  --
   DEVICE  TYPE      STATE      DBUS-PATH                                  
CONNECTION           CON-UUID                              CON-PATH             
   enp0s7  ethernet  connected  /org/freedesktop/NetworkManager/Devices/2  
Conexión cableada 1  1cc37db8-0db8-3887-acf2-59fbbcd0cb1c  
   lo      loopback  unmanaged  /org/freedesktop/NetworkManager/Devices/1  --   
                --                                    --
   running  1.10.6   connected  started  full          enabled     enabled  
enabled  enabled  enabled

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