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5 Posts

06-10-2019

United States of America

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T440 High DPC Latency by ndis.sys

2019-06-10, 7:03 AM

Hello I am having a weird issue with my T440 thinkpad. I noiced when I check Latencymon, it gets red spikes caused by ndis.sys and seems to mostly occur randonly. I have tried setting the ac 7260 wifi card to performance, updating its driver with the one on the lenovo support page, and also updating the intel ethernet driver with the one from intel themselves. I am running Windows 10 1903 x64.

 

Any ideas? Thanks.

 

 

 

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6 Posts

06-24-2012

Croatia

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Re: T440 High DPC Latency by ndis.sys

2019-06-10, 18:11 PM
Same issue I have on my x240. I tried updating drivers over System Update, and I have tried installing newest WiFi drivers for Intel 7260N WiFi module (that supports Windows 10 May 2019 update, also known as 1903 (build 18362).

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5 Posts

06-10-2019

United States of America

7 Signins

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  • Posts: 5
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Re: T440 High DPC Latency by ndis.sys

2019-06-11, 14:27 PM
Just wondering did you find a way to get rid or reduce the latency?
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6 Posts

06-24-2012

Croatia

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Re: T440 High DPC Latency by ndis.sys

2019-06-11, 19:29 PM

Sorry, nothing yet. Hopefully Lenovo will release updated drivers that will solve this. 

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1 Posts

12-06-2019

Poland

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Re: T440 High DPC Latency by ndis.sys

2019-12-06, 10:10 AM

Hi,

I had a similar problem with my T530. The problem disappeared after turning off the wlan card in device manager. I tried to install older drivers which was supposed to solve it, but windows 10 then replaced them with others. I finnaly changed the wlan card to N6300 Centrino (4$) which solved the problem.

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