apport information

** Attachment added: "Dependencies.txt"
   
https://bugs.launchpad.net/bugs/1771749/+attachment/5140826/+files/Dependencies.txt

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https://bugs.launchpad.net/bugs/1771749

Title:
  Ethernet connection lost after few minutes since starting

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

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
  problem.

  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
  IfupdownConfig:
   # 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 
(20180426)
  IpRoute:
   default via 192.168.1.1 dev enp0s7 proto static metric 100 
   169.254.0.0/16 dev enp0s7 scope link metric 1000 
   192.168.1.0/24 dev enp0s7 proto kernel scope link src 192.168.1.3 metric 100
  IwConfig:
   enp0s7    no wireless extensions.
   
   lo        no wireless extensions.
  NetworkManager.state:
   [main]
   NetworkingEnabled=true
   WirelessEnabled=true
   WWANEnabled=true
  PciNetwork:
   
  RfKill:
   
  SourcePackage: network-manager
  UpgradeStatus: No upgrade log present (probably fresh install)
  nmcli-con:
   NAME                 UUID                                  TYPE      
TIMESTAMP   TIMESTAMP-REAL                 AUTOCONNECT  AUTOCONNECT-PRIORITY  
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  --
  nmcli-dev:
   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  
/org/freedesktop/NetworkManager/ActiveConnection/1 
   lo      loopback  unmanaged  /org/freedesktop/NetworkManager/Devices/1  --   
                --                                    --
  nmcli-nm:
   RUNNING  VERSION  STATE      STARTUP  CONNECTIVITY  NETWORKING  WIFI-HW  
WIFI     WWAN-HW  WWAN    
   running  1.10.6   connected  started  full          enabled     enabled  
enabled  enabled  enabled
  --- 
  ApportVersion: 2.20.9-0ubuntu7
  Architecture: amd64
  AudioDevicesInUse:
   USER        PID ACCESS COMMAND
   /dev/snd/controlC0:  nosotros   1116 F.... pulseaudio
   /dev/snd/controlC1:  nosotros   1116 F.... pulseaudio
  CurrentDesktop: KDE
  DistroRelease: Ubuntu 18.04
  HibernationDevice: RESUME=UUID=bb1531db-e7c0-48eb-a5b7-5afe3df47ba3
  IfupdownConfig:
   # interfaces(5) file used by ifup(8) and ifdown(8)
   auto lo
   iface lo inet loopback
  InstallationDate: Installed on 2018-05-11 (6 days ago)
  InstallationMedia: Kubuntu 18.04 LTS "Bionic Beaver" - Release amd64 
(20180426)
  IpRoute:
   default via 192.168.1.1 dev enp0s7 proto static metric 100 
   169.254.0.0/16 dev enp0s7 scope link metric 1000 
   192.168.1.0/24 dev enp0s7 proto kernel scope link src 192.168.1.3 metric 100
  IwConfig:
   enp0s7    no wireless extensions.
   
   lo        no wireless extensions.
  Lsusb:
   Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
   Bus 002 Device 002: ID 04fc:0005 Sunplus Technology Co., Ltd USB 
OpticalWheel Mouse
   Bus 002 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
  MachineType: To Be Filled By O.E.M. To Be Filled By O.E.M.
  NetworkManager.state:
   [main]
   NetworkingEnabled=true
   WirelessEnabled=true
   WWANEnabled=true
  Package: network-manager 1.10.6-2ubuntu1
  PackageArchitecture: amd64
  PciNetwork:
   
  ProcFB: 0 radeondrmfb
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.15.0-20-generic 
root=UUID=d1d6ad93-b21c-43cd-8410-782414a5f935 ro quiet splash vt.handoff=1
  ProcVersionSignature: Ubuntu 4.15.0-20.21-generic 4.15.17
  RelatedPackageVersions:
   linux-restricted-modules-4.15.0-20-generic N/A
   linux-backports-modules-4.15.0-20-generic  N/A
   linux-firmware                             1.173
  RfKill:
   
  Tags:  bionic
  Uname: Linux 4.15.0-20-generic x86_64
  UpgradeStatus: No upgrade log present (probably fresh install)
  UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo
  _MarkForUpload: True
  dmi.bios.date: 07/17/2009
  dmi.bios.vendor: American Megatrends Inc.
  dmi.bios.version: P1.50
  dmi.board.name: N68-S
  dmi.board.vendor: ASRock
  dmi.chassis.asset.tag: To Be Filled By O.E.M.
  dmi.chassis.type: 3
  dmi.chassis.vendor: To Be Filled By O.E.M.
  dmi.chassis.version: To Be Filled By O.E.M.
  dmi.modalias: 
dmi:bvnAmericanMegatrendsInc.:bvrP1.50:bd07/17/2009:svnToBeFilledByO.E.M.:pnToBeFilledByO.E.M.:pvrToBeFilledByO.E.M.:rvnASRock:rnN68-S:rvr:cvnToBeFilledByO.E.M.:ct3:cvrToBeFilledByO.E.M.:
  dmi.product.family: To Be Filled By O.E.M.
  dmi.product.name: To Be Filled By O.E.M.
  dmi.product.version: To Be Filled By O.E.M.
  dmi.sys.vendor: To Be Filled By O.E.M.
  nmcli-con:
   NAME                 UUID                                  TYPE      
TIMESTAMP   TIMESTAMP-REAL                 AUTOCONNECT  AUTOCONNECT-PRIORITY  
READONLY  DBUS-PATH                                   ACTIVE  DEVICE  STATE     
 ACTIVE-PATH                                         SLAVE 
   Conexión cableada 1  1cc37db8-0db8-3887-acf2-59fbbcd0cb1c  ethernet  
1526562681  jue 17 may 2018 15:11:21 CEST  yes          4294967196            
no        /org/freedesktop/NetworkManager/Settings/1  yes     enp0s7  activated 
 /org/freedesktop/NetworkManager/ActiveConnection/1  --
  nmcli-dev:
   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  
/org/freedesktop/NetworkManager/ActiveConnection/1 
   lo      loopback  unmanaged  /org/freedesktop/NetworkManager/Devices/1  --   
                --                                    --
  nmcli-nm:
   RUNNING  VERSION  STATE      STARTUP  CONNECTIVITY  NETWORKING  WIFI-HW  
WIFI     WWAN-HW  WWAN    
   running  1.10.6   connected  started  full          enabled     enabled  
enabled  enabled  enabled

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