masazo
1 Nickel

WD15 and Latitude 5280 - Slow internet speeds 8mbps

-I created a thread on displaylink forums looking for assistance as I had found a thread with the same issue with the D6000 docking station but being that displaylink does not manage the drivers for the WD15 that I know of I figured I should get a post going here for some help

My Working Laptop:

5.Dell - Working  
-Dell k17a
-Driver 10.5.919.2015 realtek USB GbE - NETWORK Driver
-Latitude 5280
-Firmware 1.6.4
-Primary: DELL P2312H
-Secondary: DELL P2312H
-FULL SPEED NO ISSUE
 
-Checked his Docking stations Firmware using DellDockingStationFwUp_1.0.4_IE_03222018
-it shows  --- Wired Dock EC ------ 01.00.00.10
 
-after running the script to pull firmware an output file was created with the following info
3.10.002
Firmware name: 
Original version: 3.10.002
Payload version: 3.12.002
 
My Non-Working Laptops:
 
1.Dell  - started this whole thing gets slow speed with D6000 and wd15 have swapped the wd15 twice
D6000 and k17a
-Driver 10.21.1012.2017 for the realtek usb GbE - NETWORK Driver
-Latitude 5280
-Firmware 1.9.3
-Primary: DELL U2713HM
-Secondary: DELL P2312H
-When connected to D6000 or k17a ethernet speeds are 50kbps down to 8mbps
-When connected to the laptop Ethernet get full 80mbps down
3.12.002
Firmware name: 01.00.00.10
Original version: 3.12.002
Payload version: 3.12.002
 
3.Dell
-dell k17a
-Driver 10.5.919.2015 realtek USB GbE - NETWORK Driver
-Latitude 5280
-Firmware 1.6.4
-Primary: DELL E2211H
-Secondary: DELL P2312H
-When connected to D6000 ethernet speeds are 8mbps down
-When connected to the laptop Ethernet get full 80mbps down
-Have not pulled firmware version off the docking station yet
 
 
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16 Replies
masazo
1 Nickel

Re: WD15 and Latitude 5280 - Slow internet speeds 8mbps

-Last night after work I went and checked the Power bricks on the working and non-working Docking stations as I was informed that the WD15 had two models one that came with a 130 watt PS and one that came with 180 watt PS

-Laptop #1 has a 130 watt PS - Installed a 210 watt PS (GA240pe-1) - No change tried with it connected to the WD15 and tried having it connected to the laptop and the 130 to the docking

-Laptop #3 has 180 watt that connects to the docking station no PS connected to laptop and it has slow internet off docking station

-Laptop #5 Has a 65 watt connected to the WD15 and 180 watt connected to the laptop - if you remove the 180 watt the internet speed testing shows slower speeds.

-I moved Laptop #1 to Laptop #5 office last night and connected it in the same manner and laptop #1 still gets 8mbps and if I reconnect Laptop #5 it gets 70 mbps

-Once again if I bypass the Docking station ethernet with laptop #1 I get the full speed of 70-80 mbps.

-I have more Laptops with this issue but I figure if I can figure out what is going on with #1 I can fix the rest. I have a mixed environment of D6000 and WD15 running windows 10 all Latitude 5280.

-Laptop #1 has had this slow speed for a long time and I have updated BIOS, Drivers, changed WD15, tried to install a D6000 and still get slow speed when running off the docking station.

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masazo
1 Nickel

Re: WD15 and Latitude 5280 - Slow internet speeds 8mbps

-We have a fresh imaged Latitude 5280 to use as a tester
-I have 4 WD15 that I have been testing with and 5 unopened new WD15

-I have checked all the working vs non-working units power bricks (180 watts vs 130 watts)
-I have a newly imaged 5280 for testing and 4 WD15 at my desk along with 5 NEW W15 that have not been opened for testing.

-So far out of the 4 WD15 testing with a Precision 3510 connected with USB 3.0, Dell Tablet\Latitude 5285 connected with USB-C and a fresh imaged 5280 connected with USB-C I am getting odd results that make no sense

WD15 #1: GOOD
-Connected with USB 3.0 to precision 3510 77 mbps / 69 mbps
-Dell Tablet\Latitude 5285 connected with USB C 71 mbps / 43.17 mbps
-Fresh Latitude 5280 73 mbps / 71 mbps
-Wired Dock EC: 01.00.00.10
-MST HUB #1 Firm: 03.10.00.02

WD15 #2: BAD
-Connected with USB 3.0 to precision 3510 7.51 mbps / 9.31 mbps
-Dell Tablet\Latitude 5285 connected with USB C 75 mbps / 74 mbps
-Fresh Latitude 5280 1.35 mbps / 9.10 mbps
-Wired Dock EC: 01.00.00.10
-MST HUB #1 Firm: 03.10.00.02

WD15 #3: BAD
-Connected with USB 3.0 to precision 3510 8mbps / 8 mbps
-Dell Tablet\Latitude 5285 connected with USB C 74 mbps / 73 mbps
-Fresh latitude 5280 2.10 mbps / 8 mbps
-Wired Dock EC: 01.00.00.10
-MST HUB #1 Firm: 03.10.00.02
-Updated with latest firmware
-MST HUB #1 Firm: 03.12.00.02
-Fresh Latitude 5280 1.75 mbps / 8.62 mbps

WD15 #4: GOOD
-Connected with USB 3.0 to precision 3510 68 mbps / 31 mbps
-Dell Tablet\Latitude 5285 connected with USB C 64 mbps / 58 mbps
-Fresh latitude 5280 74 mbps / 58 mbps
-Wired Dock EC: 01.00.00.10
-MST HUB #1 Firm: 03.10.00.02

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jphughan
5 Tungsten

Re: WD15 and Latitude 5280 - Slow internet speeds 8mbps

It's true that the WD15 does not use DisplayLink; it taps in the native GPU output wired to the USB-C port instead.  That means that unlike the D6000 it can't be used on USB-A ("regular USB"), at least not if you want display output and system charging, but DisplayLink has its own share of drawbacks, but those aren't worth getting into in this post.

Yes, the WD15 has both 130W and 180W versions (not sure where you found a 210W adapter as you mentioned in your second post, especially as the part number you mentioned indicates 240W), but you can consult the WD15 FAQ to find out which systems require which type of power supply.  You are typically not supposed to have AC adapters connected directly to the system while you also have the WD15 connected, however.  Same goes for the D6000 when you're using it with systems that are connecting to it via USB-C and can operate at full performance with no more than 60W of power.  I doubt that would be the cause of your slow wired LAN performance, but just fyi.  You're also definitely not supposed to have a 65W AC adapter connected to the WD15 as you mentioned for "Laptop #5" in your second post.

Lastly, in your third post, you mention connecting WD15s to Precision 3510s using USB 3.0.  Either you meant to say USB-C there, or you're connecting the WD15 in a completely unsupported manner.  There are no official adapters that allow a USB-C peripheral to be connected to a USB 3.0 port, i.e. USB-A.  Some specific peripherals come with such an adapter if they have been explicitly designed to allow operating that way, but that cannot be assumed, and unlike the D6000, the WD15 is not one such peripheral.  The WD15 is meant to be connected only via USB-C.

With respect to your actual issue, your three posts are a bit hard to follow because it's not clear what relationship (if any) there is between the systems and docks mentioned across the three posts, and additionally in Post #2 you break things down by laptop, whereas in Post #3 you break things down by dock.  But I'll read it over a bit more to see if I can find a common factor.

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masazo
1 Nickel

Re: WD15 and Latitude 5280 - Slow internet speeds 8mbps

I used the adapter for the D6000 to connect the WD15 to my 3510 just so I could test the Ethernet\internet speed

-right now I have Laptop #1 that started this whole mess at my desk as I found a WD15 (Service tag: <Service tag removed>)  was getting full speeds( or close to it) with the freshly imaged 5280, the Dell tablet 5285 and with the USB C to A adapter plugged into my 3510.

-Walked it over to that office and first connected the 5280 Tester to the Docking station being used by #1 and got full speeds

-connected ONLY power  (130 watt) and ethernet to WD15 (Service tag: <Service tag removed>) then connected the USB C to the laptop #1 and ran speed test, only got 8 mbps / 8 mbps

-At that point I just walked back with #1 and am going through ALL the Docking stations to see if ANY of them get full speed with laptop #1

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masazo
1 Nickel

Re: WD15 and Latitude 5280 - Slow internet speeds 8mbps

WD15 #1: GOOD
-Connected with USB 3.0 to precision 3510 77 mbps / 69 mbps
-Dell Tablet\Latitude 5285 connected with USB C 71 mbps / 43.17 mbps
-Fresh Latitude 5280 73 mbps / 71 mbps
-Connected laptop #1 ran speed test ** 8.35 mbps / 9.16 mbps **

WD15 #2: BAD
-Connected with USB 3.0 to precision 3510 7.51 mbps / 9.31 mbps
-Dell Tablet\Latitude 5285 connected with USB C 75 mbps / 74 mbps
-Fresh Latitude 5280 1.35 mbps / 9.10 mbps
-Connected laptop #1 ran speed test ** 8.64 mbps / 9.32 mbps **

WD15 #3: BAD
-Connected with USB 3.0 to precision 3510 8mbps / 8 mbps
-Dell Tablet\Latitude 5285 connected with USB C 74 mbps / 73 mbps
-Fresh latitude 5280 2.10 mbps / 8 mbps
-Wired Dock EC: 01.00.00.10
-MST HUB #1 Firm: 03.10.00.02
-Updated with latest firmware
-MST HUB #1 Firm: 03.12.00.02
-Fresh Latitude 5280 1.75 mbps / 8.62 mbps

-Connected laptop #1 ran speed test ** 9.04 mbps / 9.34 mbps **

WD15 #4: GOOD
-Connected with USB 3.0 to precision 3510 68 mbps / 31 mbps
-Dell Tablet\Latitude 5285 connected with USB C 64 mbps / 58 mbps
-Fresh latitude 5280 74 mbps / 58 mbps
-Connected laptop #1 ran speed test ** 9.01 mbps / 9.44 mbps **

WD15 #5: GOOD with 130 WATT NEW STOCK
-Connected with USB 3.0 to precision 3510 68 mbps / 22 mbps
-Dell Tablet\Latitude 5285 connected with USB C 74 mbps / 70 mbps
-Fresh latitude 5280 73 mbps / 59 mbps
-Connected laptop #1 ran speed test ** 8.53 mbps / 9.41 mbps **

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jphughan
5 Tungsten

Re: WD15 and Latitude 5280 - Slow internet speeds 8mbps

You should probably stop using the D6000 adapter with the WD15.  You've already got a ton of variables you're juggling here, so it doesn't make sense to add unsupported configurations into the mix.  Standardize on the following:

- WD15 using either a 130W or 180W adapter (or only 180W when using it with systems that require 180W as indicated in the FAQ page I linked)
- D6000 with whatever AC adapter it comes with.
- No AC adapter connected to the system, unless you're connected to a D6000 and the system requires more than 60W.

Out of curiosity, what link speed does Windows show for the the dock LAN adapter negotiating at in these cases?  And since it sounds like you're running these tests using Internet speed tests, any chance you can perform a test using a local LAN target, such as a file copy from another system on the network or something?  Just to eliminate your Internet connection as another possible confounding variable?

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masazo
1 Nickel

Re: WD15 and Latitude 5280 - Slow internet speeds 8mbps

-The connection shows as 1 gig auto 

CPE LOGS:

Maint2-5406R# show mac-address | i a44cc8
a44cc8-005bd2 B22 100
a44cc8-9703a8 B22 100
a44cc8-97a527 B22 100
a44cc8-97a5d2 C23 100 <-- Docking station ethernet port
a44cc8-d4aea1 B22 100
a44cc8-db5c36 B22 100
Maint2-5406R#

 

Maint2-5406R# show int status | i C23
C23 Up Auto 1000FDx 100/1000T 200 100
Maint2-5406R#

 

-I have also tried hard coding the switch port to 100 full duplex with no change 

-I have other 5280's that are working with no issues  (Minus the odd power supply set up) 

-The original WD15 we ordered came with 180 watt PS but all the new ones have 130 watts (I opened them all today to check)

-When I went around to the desk today I found 2 people with 180 watts full speeds then 1 person with a 180 watt that is getting 8 mbps. 

-The issue is that We move files from our COLO and ADMIN building and with the connection bouncing between 500 kbps - 8 mbps users report files moving slow or latency but we have a fiber connection up to the building and this is not an ISP owned fiber. We are on City owned fiber, so this private network.

-I am using the speed test to figure out which ones have the issue as laptops\Docking stations without the issue are hitting 70 mbps on our ISP connection and ones that DO have the issue are 500 kbps - 8 mbps

-I found a d6000 issue on the displaylink forums for this exact issue (slow speed on the ethernet) and on laptop #1 I get this issue if it is D6000 or WD15, bypass the docking station and connect to the ethernet port on the laptop NO ISSUE get full speed on all affected devices.

-The slow speed is only when using the ethernet port on the docking station. 

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jphughan
5 Tungsten

Re: WD15 and Latitude 5280 - Slow internet speeds 8mbps

You definitely do not want to have the switch port linespeed and duplex hard-coded with the client NIC on auto negotiation, or vice versa.  That needs to be consistent on both ends of the link.  Even hard coding one side to the configuration it would have auto-negotiated anyway can create problems if the other side is actually on Auto.

But taking a step back, if you want a reasonable chance of getting helpful assistance here, I would strongly suggest cutting down your number of test cases.  It's simply too difficult for anyone to follow your posts.  As you said in one post earlier, you should probably focus on one problematic configuration to figure out what's wrong there and then apply that fix to other systems.  Every system should obviously be able to run at proper speeds with either dock, at least when you're using appropriate ports and AC adapter wattages.  So here is what I should suggest doing in order to help narrow this down and make it reasonable for people to try to help you here:

- Find a specific system and specific WD15 dock that work reliably when used together -- call them System #1 and Dock #1.
- Find another system of the same model and OS, and another WD15 that do not work properly when they are used together, even when using the same Ethernet cable and wall jack as above.  Call these System #2 and Dock #2.

Once you've established that Setup #1 consistently works and Setup #2 doesn't, connect System #1 to Dock #2, and then System #2 to Dock #1.  See whether either of those configurations works reliably.  Further troubleshooting and isolating of other variables (system/dock firmware, driver versions, etc.) should proceed based on the outcome of those tests.

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masazo
1 Nickel

Re: WD15 and Latitude 5280 - Slow internet speeds 8mbps

-Laptop #1 is my repair and then export to other systems device
- It has WD15 with current firmware on it and when I move that laptop to ANY docking station I get the same results of 8mbps/8mbps

-The testing laptop that we just imaged using docking station #1 (Docking station #1 gets full speed with EVERYTHING except laptop #1)


Laptop #1
-Driver 10.21.1012.2017 for the realtek usb GbE - NETWORK Driver
-Bios 1.9.3
WD15_1 (Laptop #1 docking station)
-Wired Dock EC: 01.00.00.10
-MST HUB #1 Firm: 3.12.002
-UPDATED FIRMWARE
DellDockingStationFwUp_1.0.4_IE_03222018 06/07/2018


Laptop #2 (fresh imaged 5280)
- XXX - NETWORK Driver (will pull tomorrow)
-Bios XXX - (Will pull tomorrow)
WD15_2 (Docking station #1)
-Wired Dock EC: 01.00.00.10
-MST HUB #1 Firm: 03.10.00.02


-I am using the 130 watt PS ONLY connected to the docking station at both laptop #1 desk and at my desk.
-switch port has been set to AUTO duplex\speed and was only hard coded on the switch side for testing and that was about a two weeks ago
-Laptop #1 has had the BIOS update, All the WD15 updates applied from dell, I have tried changing switch ports and this is not a layer 1 issue as moving the same cable to the laptop directly gets full speed.

-Will update tomorrow with Laptop #2 Bios and Eth Driver unless there is another driver I should be pulling like the "Generic SuperSpeed USB HUB"

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