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Old 02-01-2017, 07:42 PM   #31
rbaldi
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Same issue for me at idle Driver Foundation runs 1-3 %percent CPU moving mouse across the screen cause it to jump to 20%. Running a game or steaming video on browser such as youtube causes it to jump form 35-50 CPU usage.

1 week old Lenovo IdeaPad 510, windows 10 pro, Lenovo Ultra Dock running 2 monitors, i7-7500, 12GB

Un-docked driver foundation doesnt even register any CPU usage.

Need fix please
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Old 02-03-2017, 05:10 AM   #32
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Hi Alban,

I was wondering if you had any rough ETA for 8.1 M1 and is there an Alpha or Beta version available for testing?

My organisation has around 4000 Targus ACP77 docking stations and are keen to ensure our rollout of Windows 10 14393 goes as smooth as possible and are very happy to provide feedback and logs if we find issues.

Thanks,

Matt
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Old 02-03-2017, 06:36 AM   #33
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Hello,

Same issue with my Windows 10 and a HP Universal Docking. I have 2 screens. When I move the mouse, the process WUDFHost.exe use more CPU.

Any news about this issue ?
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Old 02-03-2017, 07:47 AM   #34
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Same problem here. WUDFHost.exe jumps up to 40% CPU when moving mouse.

Win 10, Lenovo ThinkPad T460s with two external screens using Dell DisplayLink D3100.
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Old 02-06-2017, 09:03 AM   #35
Simon!
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Why is there no response for 2 weeks?
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Old 02-06-2017, 01:08 PM   #36
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Quote:
Originally Posted by Simon! View Post
Why is there no response for 2 weeks?
@Simon, because I'm more focused on getting engineering to actually work on it rather than just repeating what I said before.

I wanted to post an update on Friday but meetings finished too late.
The problem with a "me-too" post without any value AND test conditions is that it is as valuable to reach a solution as a "I'm coughing" allows diagnosing the root cause of any ailment/illness.

Here is the update I had planned though!

TL;DR: we're still working on it and priority was increased the week before last.


In details:

The next DisplayLink driver for Windows will be 8.2 M0 at the end of March/early April.
I've been reshuffling the Windows 10 Anniversary (& Creators) Update team priority to look at CPU usage as THE main delivery for 8.2 M0.
Since Friday, I have something which I can share to users for some specific types of reports to gauge impact. Some changes were made in the OS and we've been able to remove some early workarounds, and bring other improvements.

In order to help effectively, I would like the suggest to each commenter on this thread to edit their posts in the thread to make sure the following is included in their report. You do NOT have to. However, I will keep assigning priorities based on pressure points.
Items to include:
1. Windows 10 Build Number (available from System_Details.txt of our Customer Support Tool). Home/Pro/Enterprise is not needed.
2. Enumerate each display, its resolution and if it is connected to the graphics card or a USB adapter (available from System_Details.txt as well).
3. The CPU ***full*** name including the numbers after iX (available from System_Details.txt as well). Generation is more important to understand the architecture rather than if it is an i3 or i7.
4. The GPU details (available from System_Details.txt as well).
5. What you include in your CPU usage (which processes: overall, WUDF, DWM...). Note: I really need WUDF more than the rest as DWM is a Windows process).
6. The value of CPU being used.
7. What happens on ALL indirect displays (indirect = through USB). If you have Task Manager on an indirect display, then it is NOT idling as content changes!!! This is really one of the most important point. Here are some examples:
7a. Content fully static: nothing changes at all, and I mean nothing, not the clock, not the mouse pointer.
7b. Some little area changes: like for instance you only have some numbers on the clock or the numbers in Task Manager.
7c. Only the mouse pointer across indirect displays. (if you do this, please do NOT use the mouse trail accessibility feature or this is the same use case as 7b).
7d. Moving a window. Indicate an idea of the size of the window... I mean moving a 10x10 pixels windows is obviously fundamentally different to moving a 4kx4k one.
7e. Playing video on VLC
7f. Playing video on a browser (and the value is constant across browsers). Our driver CANNOT differentiate which browser is playing.
7g. Game, full screen or windowed? Games do NOT use the same as video playback.
8. Which version of DisplayLink driver you are running as, like Windows builds, they don't all have the same features. (available from System_Details.txt as well).

You'll notice that all data, except usage and CPU value, is in the ZIP our Customer Support Tool creates.

I will then review the full threads regularly to see the updates.
Should I see someone with details which matches something I have something to be tested, then I will create a ticket using the forum registered email address and share what I have privately to get meaningful feedback on what I think should have been impacted by changes. Once I have verified with your feedback, we can secure the change in the release but I can also track who has been using the development build.
I am sure that posting it here publicly would be wasting everyone's time, and it wouldn't help narrow down a solution for each use case reported.

There are some long terms optimisations and new features around this as well, of course.

Kind regards,
Alban
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Old 02-07-2017, 02:20 AM   #37
Nickski
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1. OS Build Info

OS Build: 10.0.14393.0 (Debug = False)
OS Build Label: 14393.rs1_release.161220-1747


2. Monitors Connected:

Through USB (3.0 I believe)

DELL P1911 Manufacturer: DEL ProductCode: A074 Serial: 1WKJV14A08DS Built: 16/2011 @ 1440 x 900

DELL P2314H Manufacturer: DEL ProductCode: 4098 Serial: J8J313C6BLUL Built: 49/2013 @ 1920 x 1080


3. CPU

CPU: Intel(R) Core(TM) i3-3220 CPU @ 3.30GHz

No other information about CPU can be found in the system_details.txt file.


4. GPU Details

Graphics: NVIDIA GeForce GTX 550 Ti (NVIDIA)
Graphics Driver: 21.21.13.7633 Dated 2016/12/11

Graphics: Intel(R) HD Graphics (Intel Corporation)
Graphics Driver: 10.18.10.4358 Dated 2015/12/21

The Intel internal graphics is used to take the load off the CPU when streaming through Open Broadcast Studio.

5. CPU Usages

WUDF @ 10-30% - It can go up to 50% in extreme cases - especially when using things like Open Broadcast software (that uses around 25% of my CPU).

Windows Desktop Manager stays at 0.5% to 2% CPU usage.

6. Total CPU Usage

75%-100%

7. Analysis

7a: When completely static with just the task manager open, WUDF idles at around 0.5%-2% CPU usage.

7b: Same as 7a - uses around 0.5-2% CPU with the Windows clock open.

7c: When just moving the mouse around the displays WUDF uses around 8-12% of the CPU.

7d: When moving a window around WUDF usage goes up to around 20-25% of the CPU.

7e: VLC player playing a 1080p video: 15-25% WUDF CPU Usage.

7f: Full screen video on:

- Google Chrome = 7.5-15% WUDF CPU Usage.
- Full screen video on Microsoft Edge = 7.5-15% WUDF CPU usage.
- Full screen video on Firefox = 10% WUDF CPU Usage (that said firefox used about 40% of my CPU whereas the other browsers used around 10%)


Same video used on all browsers.

7g: I will have to get back on that one. No real games installed at this current moment in time.

8. Display Link Driver Installed

DisplayLink Graphics Driver (8.1.848.0) on 2017/01/01 Status is Installed
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Old 02-07-2017, 06:46 AM   #38
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Quote:
Originally Posted by AlbanRampon View Post
...

The next DisplayLink driver for Windows will be 8.2 M0 at the end of March/early April....
Is that a joke?
Complete firms cant work correctly since weeks/months.
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Old 02-07-2017, 07:48 PM   #39
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So I am having the same issue, usually 14-25% CPU usage, but when Skype for Business or WebEx is displaying, it goes to 100% and doesn't seem to kick off throttling either. I can use Throttlestop to force the CPU to max, but even then it doesn't seem to completely fix it, the rest of the system is very very slow, instead of unusable.

1. OS Build Info

OS: Microsoft Windows 10 Pro (x64-based PC), No Service Pack, English
OS Build: 10.0.14393.0 (Debug = False)
OS Build Label: 14393.rs1_release.161220-1747


2. Monitors Connected:

Manufacturer: LEN ProductCode: 40D3 Serial: 0 Built: 1/2012
DELL E2211H Manufacturer: DEL ProductCode: A072 Serial: 7N01218P0U0M Built: 34/2011
DELL E2211H Manufacturer: DEL ProductCode: A072 Serial: 19G4H13T1U8L Built: 14/2011


3. CPU

Intel(R) Core(TM) i7-3667U CPU @ 2.00GHz - Running at 2.5 Ghz on all cores via Throttlestop


4. GPU Details

Graphics: DisplayLink USB Device (DisplayLink)
Graphics Driver: 8.1.843.0 Dated 2016/12/01
Graphics: DisplayLink USB Device (DisplayLink)
Graphics Driver: 8.1.843.0 Dated 2016/12/01
Graphics: Intel(R) HD Graphics 4000 (Intel Corporation)
Graphics Driver: 10.18.10.4425 Dated 2016/04/04

5. CPU Usages
WUDF @ 14-25% when just browsers, spreadsheets and what not. With Skype For Business and WebEx presentations, it hits 75-100%, typically 100% This is with no video camera on, just screen sharing from others.

Windows Desktop Manager stays at 0.5% to 3% CPU usage.

6. Total CPU Usage

25-30 when not using Skype For business or WebEx, 100% when using them

7. Analysis

7a: When completely static with just the task manager open, WUDF idles at around 4%-15%

7b: Same as 7a - uses around 4-15% CPU with the Windows clock open.

7c: When just moving the mouse around the displays WUDF uses around 22-23% of the CPU.

7d: When moving a window around WUDF usage goes up to around 22-23% of the CPU.

7e: VLC player playing a 1080p video: 6-12%% WUDF CPU Usage.

7f: Full screen video on:

- Google Chrome = 10-15% WUDF CPU Usage. Appears to be throttled by Chrome CPU as well
- Full screen video on Microsoft Edge = 105-15% WUDF CPU usage.

Same video used on all browsers.

7g: Installed Stellaris off of steam. During loading screen it took 4-6% cpu, once in game at the start screen, where there is animation, it was taking 17-40% CPU.


8. Display Link Driver Installed

DisplayLink Graphics Driver 8.1.843.0 Dated 2016/12/01

Added a WPA screenshot, looks like the Displaylink driver is accessing Direct X 11, where the CPU draw is coming from


Last edited by schmak01; 02-07-2017 at 09:40 PM. Reason: adding detail
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Old 02-07-2017, 09:39 PM   #40
schmak01
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I hope this might help, when using WPA and looking into WUDFHost I discovered that the big CPU grab appears to be from when your dlidusb.dll starts interacting with the DirectX 11 DLL, which is used for just about everything on the desktop now IIRC with the anniversary update.

I am by no means an expert on this, but it might be something to dig into

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