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  TB 16 issue on Dell Lattitude 7490 with large amount of data

Status in Dell Sputnik:
Status in linux package in Ubuntu:
  Fix Released
Status in linux source package in Bionic:
  Fix Released
Status in linux source package in Cosmic:
  Fix Released

Bug description:
  ===SRU Justification===
  Packets are silently corrupted on Dell TB16's ethernet.

  Disable RX aggregation on new Dell TB16 dock.

  User confirms the patch fixes the issue.

  [Regression Potential]
  Low. The workaround already works, we just add a new USB serial to let
  new TB16 dock also uses this workaround.

  ===Original Bug Report===

  Large amount of data gets corrupted when using the TB16 ethernet port.
  (rsync synchronization, etc... )

  We can confirm this issue on this kernel. Creating new issue as stated
  in this bug (#1729674)

  Linux E7490 4.15.0-29-generic #31-Ubuntu SMP Tue Jul 17 15:39:52 UTC
  2018 x86_64 x86_64 x86_64 GNU/Linux

  On my Fedora is this still an issue even with announced bugfix (link copied 
from this discussion #78.
  Linux username-localdomain 4.17.9-200.fc28.x86_64 #1 SMP Mon Jul 23 21:41:29 
UTC 2018 x86_64 x86_64 x86_64 GNU/Linux

  It's fixed by turning the checksum offload off (tested on the Fedora .
  sudo ethtool --offload enp11s0u1u2 rx off

  related in bugzilla:
  ProblemType: Bug
  ApportVersion: 2.20.9-0ubuntu7.2
  Architecture: amd64
   /dev/snd/controlC0:  ubuntu     1955 F.... pulseaudio
  CasperVersion: 1.394
  CurrentDesktop: ubuntu:GNOME
  DistroRelease: Ubuntu 18.04
  LiveMediaBuild: Ubuntu 18.04.1 LTS "Bionic Beaver" - Release amd64 (20180725)
  MachineType: Dell Inc. Latitude 7490
  Package: linux (not installed)
   PATH=(custom, no user)
  ProcFB: 0 inteldrmfb
  ProcKernelCmdLine: BOOT_IMAGE=/casper/vmlinuz 
file=/cdrom/preseed/username.seed boot=casper quiet splash ---
  ProcVersionSignature: Ubuntu 4.15.0-29.31-generic 4.15.18
   linux-restricted-modules-4.15.0-29-generic N/A
   linux-backports-modules-4.15.0-29-generic  N/A
   linux-firmware                             1.173.1
  Tags:  bionic
  Uname: Linux 4.15.0-29-generic x86_64
  UpgradeStatus: No upgrade log present (probably fresh install)
  UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo
  _MarkForUpload: True 06/07/2018
  dmi.bios.vendor: Dell Inc.
  dmi.bios.version: 1.4.1 0KP0FT
  dmi.board.vendor: Dell Inc.
  dmi.board.version: A00
  dmi.chassis.type: 10
  dmi.chassis.vendor: Dell Inc.
dmi:bvnDellInc.:bvr1.4.1:bd06/07/2018:svnDellInc.:pnLatitude7490:pvr:rvnDellInc.:rn0KP0FT:rvrA00:cvnDellInc.:ct10:cvr: Latitude Latitude 7490
  dmi.sys.vendor: Dell Inc.

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