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100 Posts

04-06-2018

United States of America

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Re: X1 Carbon 6th gen : Fan Noise

2018-06-03, 0:33 AM
what the. that's very good battery Arjov! May I ask what specs your X1 Carbon is?
the i5 or i7 model? which display
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50 Posts

04-02-2018

Italy

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Re: X1 Carbon 6th gen : Fan Noise

2018-06-03, 1:40 AM

 wrote:
what the. that's very good battery Arjov! May I ask what specs your X1 Carbon is?
the i5 or i7 model? which display

I7 8550u with FHD monitor. 

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218 Posts

04-24-2018

United Kingdom of Great Britain and Northern Ireland

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Re: X1 Carbon 6th gen : Fan Noise

2018-06-03, 7:34 AM

Mine still works like a charm, fan hardly spins up unless I perform CPU intensive tasks like video encoding. Battery lasts almost a day. :)

 

i7-8650U with DV screeen.

Lenovo ThinkPad X1 Carbon (6th Gen), ASUS PG27UQ Quantum Dot UHD 4K HDR 144 Hz Monitor
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48 Posts

03-21-2018

United States of America

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Re: X1 Carbon 6th gen : Fan Noise

2018-06-16, 12:01 PM

Fan noise is back! 

https://forums.lenovo.com/t5/ThinkPad-X-Series-Laptops/TP-X1-Carbon-6TH-CPU-idles-at-almost-4-GHz-after-1-25-BIOS/m-p/4111265

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218 Posts

04-24-2018

United Kingdom of Great Britain and Northern Ireland

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Re: X1 Carbon 6th gen : Fan Noise

2018-06-27, 11:23 AM

Might have found the smoking gun (certainly something to consider)

 

The process WMI Provider Host is the only one that keeps consuming high CPU on my machine. Why does this happen? I've found this guide and traced it to the Thunderbolt(TM) Service. After I disabled this, the problem seems to go away.

 

http://bit.ly/2twNIVq

 

Give this a go. Btw, the same method mentioned in the link above can be used to identify other processes / services that may be causing the issue with WMI Provide Host consuming high CPU %.

Lenovo ThinkPad X1 Carbon (6th Gen), ASUS PG27UQ Quantum Dot UHD 4K HDR 144 Hz Monitor
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26 Posts

06-21-2018

United States of America

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Re: X1 Carbon 6th gen : Fan Noise

2018-06-27, 19:46 PM

This is caused by incorrect power management profiles installed from the factory. We had this issue on all laptops but applied this hotfix and the issue went away: https://support.lenovo.com/us/en/solutions/ht506625

 

Once you've done the hotfix you can click on the Windows battery and adjust the slider all the way to the left and it will now Idle at 0.86Ghz. The middle slider is 1.66Ghz. All the way to the right will give you 4Ghz idle. 

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218 Posts

04-24-2018

United Kingdom of Great Britain and Northern Ireland

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Re: X1 Carbon 6th gen : Fan Noise

2018-06-27, 20:04 PM

 wrote:

This is caused by incorrect power management profiles installed from the factory. We had this issue on all laptops but applied this hotfix and the issue went away: https://support.lenovo.com/us/en/solutions/ht506625

 

Once you've done the hotfix you can click on the Windows battery and adjust the slider all the way to the left and it will now Idle at 0.86Ghz. The middle slider is 1.66Ghz. All the way to the right will give you 4Ghz idle. 


Nope that's not enough. This only fixes the CPU idle speed where it was running at max TurboBoost while idle.

 

One still has to fix the Thunderbolt service issue as it consumes a lot of CPU.

 

You've obviously not read the my post as there is evidence in the Event Viewer that the issue is caused by the Thunderbolt service and disabling that solved the issue.

Lenovo ThinkPad X1 Carbon (6th Gen), ASUS PG27UQ Quantum Dot UHD 4K HDR 144 Hz Monitor
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26 Posts

06-21-2018

United States of America

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Re: X1 Carbon 6th gen : Fan Noise

2018-06-27, 20:35 PM

WMI Provider Host never goes above 0% for me. My CPU utilization is rarely above 3-4% if I'm not actively doing something. 

 

 

I investigated the event logs that were mentioned in that Microsoft thread and I see errors related to the WMI-Activity Operation portion but when I try to find the processIDs associated with the error they're gone. It appears the errors are occuring but they're not impacting CPU utilization or I haven't been able to capture it yet. I've had Task Manager up for the better part of a week monitoring the top processes consuming CPU and have never seen WMI Provider Host go above 0%. 

 

Reading that thread it appears the cause is a third party software application so if you're running something that has an endpoint conflict with the WMI process then it could most certainly be causing CPU issues but I'm not seeing it with what I have installed. Please do let us know if you find out the cause. 

 

In the meantime I'll try and capture a running PID associated with an error or enable logging to look at killed PIDs. 

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26 Posts

06-21-2018

United States of America

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Re: X1 Carbon 6th gen : Fan Noise

2018-06-27, 20:47 PM

Ok so I did look earlier in the day and I found a PID that is the PID of a currently running Thunderbolt.exe process:

 

 

However when the error occurs it doesn't appear to be causing WMI to use any CPU and I've only ever had 1 WMI Provider Host. 

 

So maybe it's not related to Thunderbolt? I think WMI is just monitoring processes for any application so just because you saw an error and associated it with an active PID might not mean that that's the PID causing your CPU issues in all cases. If the WMI process is using lots of CPU and it's associated with that PID (Thunderbolt.exe for example) then yes that would be the cause but that isn't the case for me. 

 

-Doing a little more research it's possible you have an application that conflicts with the thunderbolt display and it's causing WMI to consume a lot of CPU. So it's probably not the thunderbolt process itself but something using it. 

 

 

 

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76 Posts

04-23-2018

Singapore

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Re: X1 Carbon 6th gen : Fan Noise

2018-06-27, 23:06 PM

 wrote:

Might have found the smoking gun (certainly something to consider)

 

The process WMI Provider Host is the only one that keeps consuming high CPU on my machine. Why does this happen? I've found this guide and traced it to the Thunderbolt(TM) Service. After I disabled this, the problem seems to go away.

 

http://bit.ly/2twNIVq

 

Give this a go. Btw, the same method mentioned in the link above can be used to identify other processes / services that may be causing the issue with WMI Provide Host consuming high CPU %.


BrianSu, u using the tbt3 docking or what that causes this?

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