[Bug 2066064] Re: Dell Latitude 5450 and 5550 Ethernet dropped packets (Intel Meteor Lake CPU with 8086:550a NIC)

[Chris Guiver]

Thank you for taking the time to report this bug and helping to make
Ubuntu better.

Bug reporting is about finding & fixing problems thus preventing future
users from hitting the same bug.

I suspect a Support site would be more appropriate, eg.
https://answers.launchpad.net/ubuntu. You can also find help with your
problem in the support forum of your local Ubuntu community
http://loco.ubuntu.com/ or asking at https://askubuntu.com or
https://ubuntuforums.org, or for more support options please look at
https://discourse.ubuntu.com/t/community-support/709

You've filed this bug against the Ubuntu-Release-Upgrader package, which
will upgrade a release from 22.04 to 23.10 (or 24.04 in the future), but
no logs or mention of problems with that are mentioned.

Ubuntu 22.04 LTS is a LTS release, thus has some kernel stack choices
(GA = 5.15, HWE = 6.5, OEM = ...) but no clues as to product (Server?
Desktop?) were provided, nor what install media was used (ie. kernel
stack defaults are unknown). Your description implies network issues,
where bug report is filed against the `do-release-upgrade` (or
equivalent) command without logs..

I suggest trying support first..  as your issue maybe more linked to the
linux kernel (or kernel modules) and not what you've filed the bug
against; but no details as to what you're running were actually provided
(release requires product & install media details to be known for LTS
releases with kernel stack choice).

-- 
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https://bugs.launchpad.net/bugs/2066064

Title:
  Dell Latitude 5450 and 5550 Ethernet dropped packets (Intel Meteor
  Lake CPU with 8086:550a NIC)

Status in linux package in Ubuntu:
  New

Bug description:
  Hello,

  We are testing a Dell Latitude 5450 and Dell Latitude 5550 with Ubuntu
  Linux and are noticing several dropped Ethernet packets. It was first
  observed with very slow response times when connected over Ethernet
  with telnet to the laptops. Both laptops have Meteor Lake CPUs with
  the Intel NIC 8086:550a.

  The simplest way I found to replicate the issue is with a simple script, which I'll attach to this bug later. It basically does the following:
  - reboot the laptop via SSH
  - wait for the laptop to boot up (via checking ping responses)
  - send 60 ping requests and check if any are dropped
  - loop and try this 10 times in total

  With these new Meteor Lake laptops, they typically drop 6% of the
  packets in this 60 count ping test.

  lsb_release -a shows: Ubuntu 22.04.4 LTS.
  I ran "sudo apt update" and "sudo apt upgrade" with no change in the results.

  lspci contains (from the Dell 5450):
  00:1f.6 Ethernet controller: Intel Corporation Device 550a (rev 20)

  Let me know if I should provide any other details.

  Thanks

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