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HUGE dpc latency problems. Nvlddmkm.sys & Dxgkrnl.sys

L

LiMpIcH

Member
Joined
Feb 6, 2015
Posts
8
This is my first post here so bare with me.


I recently got myself a new PC, whenever i run a game the DPC latency becomes enourmous. I've updated every driver i could find and have reinstalled windows countless of times, and yet it keeps reappearing.


I'm desperate and don't really know where to look for help anymore, not even the tech support from where i bought the PC have
any clue what the issue is.

Here's a picture of when im simply iddling without moving the cursos.
https://i.imgur.com/a1uLeqN.png
Seems alright to me atleast, still seems abit high but definately not ruining my experience in winddows.


This is how it looks when i'm running a game, ( dota 2 here for example.)
https://i.imgur.com/Y0khg6Z.png
https://i.imgur.com/OmUoKIb.png


It's simply crazy, and i have no bloody idea how to solve this problem, any assistance would be greatly appreciated.


My DxDiag: ------------------ System Information ------------------ Time of this report: - Pastebin.com
 
Have these issues with dells. 64bit OS less/ and more issues with 32bit OS.
Many new systems need Bios, intel chipset software updated. Did you review. Intel(R) 9 Series Chipset versions?


Did you do the suggested instruction to test and isolate devices?

Did not see MB model #, Which ASUS is it.

What game, how old?

Other games, new ones work fine?

Did you try any DPC call optimizers. Or manual set priority levels per device?
 
This is is a free tester.

opt 4.JPG

It may be you need a setting for just this game, that other don't need. But can find a common setting option.
 
Does this game have a sound driver option. As Realtek High Definition Audio driver are poor for some games.
As this driver may not work well with this game, as you tested other games and have less or no issues?
 
This is not happenign to just one game i'm afraid this is all games.

I also installed the latest chipset drivers avaible. And isolating devices, yeah everything except the hardware inside the PC.
 
Hi limpich. :smile9:

If it is present, try to disable the Nvidia Driver Helper Service
1) from start - run (or searchbox) - type services.msc - press enter
2) double left-click the Nvidia Driver Helper Service
3) stop the service
4) change the startup type to disabled, click ok

Check dxdiag results:
1) from start - run (or searchbox) - type dxdiag - press enter
2) when dxdiag scan finished, check the three tabs: at the end of them, you should see No problems found.

:wave:
 
As you can see here i dont even have the driver help service. So nothing to really disable, if of course you're not speaking about the display driver service?

And there are no problems found in dxdiag.
PkleuRk.png
 
usasma said:
Have you had a look at this topic? It was written to help with diagnosing and fixing high dpc latency issues:
https://www.sysnative.com/forums/wi...ues-with-wpa-windows-windows-vista-7-8-a.html
Click to expand...
Well, of course! unfortunately Dxgkrnl.sys seems to only be downloadable through windows update. and i got all the latest uppdates installed. And for the nvidia driver i've been trying out countless of different drivers. (I uninstalled with Display Driver Uninstaller in safemode and reboted between every installation ) and I haven't fonud one that solves my problem.
 
Do you have any external audio devices such as sound cards connected to your PC?

Can you follow these instructions from TomasD:

TomasD said:
To properly troubleshoot issues with high/frequent DPCs/IRPs, we require a XPERF trace. Please follow these steps to generate one:

Download Windows Software Development Kit (SDK) for Windows and run the setup.
Select Windows Performance Toolkit feature (all the others can be unchecked) and proceed with the download/installation.
Once the installation finishes, open an elevated Command Prompt by right-clicking on CMD.EXE shortcut in your start menu and selecting Run As Administrator from the context menu.
Type the following command, which will start tracing, in the Command Prompt window you just opened:
Code: 
xperf -on PROC_THREAD+LOADER+PROFILE+INTERRUPT+DPC+DRIVERS+POWER+IDLE_STATES -stackwalk Profile -BufferSize 1024 -MinBuffers 256 -MaxBuffers 256 -MaxFile 256 -FileMode Circular
If you see a yellow warning "xperf: warning: This system is not fully configured for x64 stack tracing" after running the above command, please complete these extra steps (otherwise, proceed to the step #5):
Read More:

If you see a red error "xperf: error: NT Kernel Logger: A device attached to the system is not functioning. (0x1f)" after running the above command, please complete these extra steps (otherwise, proceed to the step #5):
Read More:

If you see a red error "xperf: error: NT Kernel Logger: Cannot create a file when that file already exists. (0xb7)", please do the following (otherwise, proceed to the step #5):
Read More:

Perform some activities with your computer for few minutes, making sure the issues you reported are reproduced.
Run the following command, which will stop the tracing, in the command prompt window you already have opened:
Code: 
xperf -stop -d C:\CPU.etl
Compress file C:\CPU.etl
Upload the compressed file to a file sharing service (e.g. OneDrive or DropBox).
Share the download link here.

Thank you.
Click to expand...

-Stephen
 
I've actually done a xperf in the past, but it didn't show me anything i couldnt figure out from latencymon.
Although now when i was gonna perfom a new one to upload here i actually bluescreened when i tried to start it, i rebooted and made a second try but immediatly bluescreened again.

I did however get the xperf: warning: This system is not fully configured for x64 stack tracing" message the first time without bluescreening so i ran REG ADD "HKLM\System\CurrentControlSet\Control\Session Manager\Memory Management" -v DisablePagingExecutive -d 0x1 -t REG_DWORD -f

After that point i bluescreened after every xperf i tried to perfom. Any clue whats that about? I'm gonnna try to reinstall windows sdk and see if the problem persist.
 
The BSOD error code is inconclusive. Please:

Please provide this information so we can provide a complete analysis: https://www.sysnative.com/forums/bs...ctions-windows-8-1-8-7-and-windows-vista.html

Then, while waiting for a reply, try running Driver Verifier according to these instructions: Driver Verifier Settings
This may/may not help - but it'll give you a head start (rather than waiting for an analysis of the dump files and then being asked to run it). STOP 0xA errors (the BCCode: a thing) are usually driver errors and Driver Verifier can sometimes help identify the faulting driver.
 
Hi Li,

Were you able to find the solution to your problem? I have the same issue. Installing NVidia driver and windows update worsened it. The game I run (Diablo 3) freezes very frequently due to this. The game freeze actually lessens when I run latencymon (don't know why). For me, I see high disk I/O when it happens, so I upgraded my ram but no luck. and I doubt changing my disk will solve the problem
 

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