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Windows 7: Please explain nVidia nvvsvc.exe and nvxdsync.exe processes.

29 Sep 2011   #21
Teerex

Windows 7 x64 Ultimate SP1
 
 

The thing communicates your wishes to the driver. It also communicates what it's supposed to be running, 2D, 3D, or full throttle.


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30 Sep 2011   #22
crimson

Windows 7 Retail
 
 

Quote   Quote: Originally Posted by Teerex View Post
The thing communicates your wishes to the driver. It also communicates what it's supposed to be running, 2D, 3D, or full throttle.
Which thing?
My System SpecsSystem Spec
30 Sep 2011   #23
Wishmaster

Windows 7 Home Premium 64bit
 
 

They just control the driver.

If you want to make any changes to a 3D Game, such as force AA,AF, enable Vsync, force AO etc, you need to use the Control Panel to do so.

Game Profiles, so that the driver can use a different setting that you choose for each game.

Video playback enhancements you may want to apply.
If you choose to use the Nvidia card for all playback or not, Dynamic Contrast, Color settings etc.

PhysX settings.

Auto Update

Theres many other features as well, and without those service, you loose them.

You basically end up only being able to use only the 3D settings a game provides in its options, as well as no way to control other aspects such as Video Playback.
My System SpecsSystem Spec
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30 Sep 2011   #24
Britton30
Microsoft MVP

Windows 7 Ultimate X64 SP1
 
 

First of all I don't game or do video trans coding so I have nothing GFX intensive. I used to have two of those processes running, don't remember which now. The description said it enabled some Hot Key feature or driver helper svc.
Here's another thread on it. Should I stop nvvsvc.exe and nvxdsync.exe?
My System SpecsSystem Spec
30 Sep 2011   #25
crimson

Windows 7 Retail
 
 

Quote   Quote: Originally Posted by Britton30 View Post
First of all I don't game or do video trans coding so I have nothing GFX intensive. I used to have two of those processes running, don't remember which now. The description said it enabled some Hot Key feature or driver helper svc.
Here's another thread on it. Should I stop nvvsvc.exe and nvxdsync.exe?
That was the thread where I was told to start a new thread.


Quote   Quote: Originally Posted by Wishmaster View Post
They just control the driver.

If you want to make any changes to a 3D Game, such as force AA,AF, enable Vsync, force AO etc, you need to use the Control Panel to do so.

Game Profiles, so that the driver can use a different setting that you choose for each game.

Video playback enhancements you may want to apply.
If you choose to use the Nvidia card for all playback or not, Dynamic Contrast, Color settings etc.

PhysX settings.

Auto Update

Theres many other features as well, and without those service, you loose them.

You basically end up only being able to use only the 3D settings a game provides in its options, as well as no way to control other aspects such as Video Playback.
There's 3 processes. What are the difference? What does each one do individually? Are all 3 needed for graphics driver. Or just 1 or 2?
My System SpecsSystem Spec
08 Feb 2014   #26
Qwertyrsvp

Win 7 64
 
 
nvxdsync.exe

someone said they wouldn't put the process in if you don't need it. Except I have geforce 630m that cant run shadow play, or stream games which i don't even play and I constantly had shadow play and nvidia stream processes running when I started up until I disabled them, so I hardly trust nvidia to only run necessary processes and services.
My System SpecsSystem Spec
15 Dec 2014   #27
jonnyhotchkiss

Windows 7 Ultimate 64bit
 
 
nvxdsync tests and results: safe to stop

Hi Crimson, not sure if you care about this still, but I've noticed the persistence of that nvxdsync, + the nvsvc processes.

I used ShellExView to disable the nvidia control panel content menu on (right-click) Desktop, but still the entry existed - until I used the Nvidia control panel's menu option.

I've yet to try disabling the other shell extensions, but the nvxdsync process was intriguing me.

I'm on windows 7 64-bit ultimate, on a brand new build (don't even have ntune installed, so you could argue the functionlity-impact-test isn't complete) but I've found that setting the nvidia display driver service to manual + stopping has the desired effect, and all processes are killed.

If you ever use nvidia control panel, 3 processes (at least, depending on your config) will open, and remain open even after the GUI nvcplui.exe is closed. quickest way to stop might be sc stop nvsvc with admin rights, which you could set on a batch that is linked via shortcut etc.

In short, they are used by NVIDIA, but seem to be safe to stop, when NVIDIA CPL is not in use
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30 Apr 2016   #28
diapolical

 
 

Here's my explanation -
I am using Nvidia drivers from 2013 coz they have less bloatware, they work fine.

My conclusion - nvdsync.exe is spyware from Nvidia, that's all.

It is not needed for the functioning of the graphics card. It behaves very suspiciously, it resists the users efforts to close it down while adding nothing to the users benefit.

If you don't have the Nvidia tray running at startup, then nvdsync.exe doesn't start up, proving it's not needed for the Nvidia driver to function normally. It will start up as soon as you right click on the desktop (that simple act alone starts it, even if you don't elect to run the Nvidia Control Panel in that way!) It also starts up when you run Nvidia Control Panel through a direct shortcut.

You cannot load the Nvidia Control Panel if the nvdsync.exe process has been renamed, deleted or stopped from running which suggests it might at least be a necessary component of the Control Panel, yet if you stop the nvdsync.exe program after the Control Panel has loaded, the Control Panel functions perfectly normally proving that nvdsync.exe is not needed there.
And just in case you had any doubt that nvdsync.exe is not an element of the Control Panel, watch how nvdsync.exe starts up again (if you have stopped it manually) AFTER YOU CLOSE the Control Panel!

What's more nvdsync.exe resists attempts by the user to stop it communicating over the Internet - it rewrote the entry in my firewall software, ZoneAlarm, cancelling the block I placed on it to receive and initiate internet connections.
I finally managed to bring this outlaw software under control by changing the ownership of the nvdsync.exe file to "user" of the computer (a user with admin rights). Now the block in the Firewall software remains as I set it and nvdsync.exe cannot call home.

The process that this exe file starts is deceptively titled "NVIDIA User Experience Driver Component". The name fools you into thinking it's there for the User's benefit and that it is a necessary part of the driver. A more honest title would be "NVIDIA Unnecessary User Spying Component" but if that was the title we'd all be shutting it down!
Whatever information it is collecting, it is doing so without your permission and it is designed to resist your attempts to stop it, which clearly suggests that it is not there for your benefit.
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 Please explain nVidia nvvsvc.exe and nvxdsync.exe processes.




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