sudo ethtool -C xxxx rx-usecs 6000

(replace xxxx with the name of your network card)

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You received this bug notification because you are a member of Kernel
Packages, which is subscribed to linux-oem-5.10 in Ubuntu.
https://bugs.launchpad.net/bugs/1930754

Title:
  e1000e extremly slow

Status in linux-oem-5.10 package in Ubuntu:
  Confirmed

Bug description:
  We have dell latitude 5420 & 5520 laptops with onboard intel ethernet 
controller.
  Problem is that the ethernet port is extremely slow. about 100kbyte/s 
download throughput while on a gigabit connection. Upload seems to work just 
fine.

  Also when I pxe boot the system it's also painfully slow.

  But here comes the funny part. When I attach a usb memory stick the
  throughput of the networkcontroller is as expected.

  I've used latest ubuntu 20.04.2 kernel 5.8.0-55
  I've used latest ubuntu 20.04.2 kernel 5.10.0-1029-oem

  Turns out this problem is not showing up when I manually install the
  5.8.18 kernel.

  Also when I create my own iso with the help of Cubic and install the
  5.8.18 kernel in it the pxe boot is working as expected with high
  throughput

  system: Dell latitude 5420 + 5520
  nic: Ethernet Connection (13) I219-LM
  ubuntu 20.04.2
  module: e1000e

  Please assist. Thank you

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