Dell D6000 - Slow ethernet

[tayd85]

We have both the Dell E5470 and 5480 connected to the Dell D6000 docking station. The E5470 uses USB 3.0 and 5480 uses USB C. When off the dock and with an Ethernet cable plugged directly in to the laptops we get 50Mpbs download and 47Mpbs up. When connected through the dock we get 3Mbps down and 47Mpbs UP.

I have applied all drivers updates, updated the BIOS applied Windows updates but the issue is the same. Anyone have any ideas?

[Vansen]

I also have found a way to reproduce the above issue with my company's Dell 7280 laptops connected via USB-C.

If I connected the 7280+D6000 to a older 19" monitor that only has DVI inputs (therefore I need to use a DP to DVI adapter) the NIC slowness persist.
If I then connect the same 7280+D6000 combo to a newer 34" screen via DP to DP, the slowness goes away.

[AlbanRampon]

Hello,
This is peculiar and not expected. Especially the second report.
Would you please be able to use the third link in my signature to gather the machine details and other logs?
Also, please specify what network equipment (brand, model and network speed) the Dell D6000 is connected to.
I can then create a bug report for investigation. To have better chances of reproducing this, we will need to select either close or identical equipment. An internal reproduction is likely to be necessary for debugging.

Final question, how do you measure the speed? Is that using a local FTP server, moving files through a Samba/Windows network shared driver, external website test?.

Kind regards,
Alban

[Vansen]

Hi Alban, I'm using speedtest.net to test internet speeds.
Your 3rd link details steps through troubleshooting about driver installation issues?
Do you want me to run through all the steps or just gather my test system information?

[AlbanRampon]

Yep, just the use the Customer Support Tool to package it all, please.

We have an internal reproduction now of something similar. We have had a report with all the logs. We can't be sure we are looking at the same issue or similar symptoms of a different illness so I'd still like your logs to create a new bug.

8.3 M0 release candidate has already left the station and, as we don't have logs or a fix, it should behave the same way in that imminent release (= don't install and expect it fixed).
However, as we progress on the bug where we already have all details to progress, I should be able to share a development build to check if that addresses your report as well or if more work will be needed.

Kind regards,
Alban

[Vansen]

Hi Alban,

Please find attached the standard "Gather Support Information" zip file below.
The monitor i was using is a Dell 1907FPt

[AlbanRampon]

Good afternoon,

We are still working on addressing the root cause.

In the meantime, we would like feedback on the DisplayLink USB Graphics Software for Windows 8.3 M1 Dev Build ([8.3.1943.0 / 8.3.1942.0]) to check if that changes behaviour for you and unblocks traffic.

Kind regards,
Alban

[kyle_]

Thank you Alban. I will test this first thing Monday morning when I am back at work.

[Vansen]

Originally Posted by AlbanRampon

Good afternoon,

We are still working on addressing the root cause.

In the meantime, we would like feedback on the DisplayLink USB Graphics Software for Windows 8.3 M1 Dev Build ([8.3.1943.0 / 8.3.1942.0]) to check if that changes behaviour for you and unblocks traffic.

Kind regards,
Alban

Initial testing is showing good results on my test Dell 1907FPt that has a default of 1280 x 1024 res.

[kyle_]

Tested the new driver on all four of our setups that were having issues. They are now working correctly. Thank you for the quick turn-around time in getting a beta driver for us to test.