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5 Posts

06-04-2021

Canada

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X1 Carbon Gen 9 - Buzzing sound upper left of laptop

2021-06-04, 20:04 PM

Hi Lenovo,

Several users of the X1 Carbon Gen 9 have experienced an electrical buzzing sound coming from the top left of the laptop. It is audible when the fans are not running, in a quiet room. When you move your ear above the keyboard, close to the ESC key it becomes quite obvious that it originates from this area. When the fans engage, usually the sound cannot be heard (masked by the fan likely).  It does not change with charging or not and is not a high-pitched sound that one may notice with coil whine. It's best described as a crackling or static buzz. Also present in the BIOS screen, so likely not an OS issue.


Here are two reddit threads with several users reporting this behavior:

https://www.reddit.com/r/thinkpad/comments/nh8yfk/x1_carbon_gen_9_faint_crackle_from_left_speaker/

 

and 

 

https://www.reddit.com/r/thinkpad/comments/nl92yw/x1_carbon_gen_9_coil_whine_or_electrical_buzzing/

 

Numerous users in each thread report this issue.

 

Can you confirm if this is a widespread issue and if it is dangerous or not?

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2074 Posts

01-08-2021

Philippines

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Re:X1 Carbon Gen 9 - Buzzing sound upper left of laptop

2021-06-05, 7:40 AM

Hello Carefree CFC,

 


Welcome to Lenovo Community

 

 

Have you updated the BIOS to the latest version thru the support site?
We'd also recommend that you update the drivers from the same support website.

 

Our Engineering team makes sure that Lenovo machines are safe to use.
Still we appreciate for bringing this to our attention.

 

Kindly try the recommended steps, then observe and update us how it goes

 

 


Regards, 
Lorenzo_Lenovo



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4 Posts

06-05-2021

Germany

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  • Message 3 of 16

Re:X1 Carbon Gen 9 - Buzzing sound upper left of laptop

2021-06-05, 19:10 PM
Hey Lorenzo, could you take a look at my thread :( https://forums.lenovo.com/t5/Lenovo-P-Y-and-Z-series-Notebooks/Lenovo-P15s-WORST-Laptop-ever-Feels-like-working-on-a-20-year-old-machine-NEED-HELP/m-p/5082686
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5 Posts

06-04-2021

Canada

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Re:X1 Carbon Gen 9 - Buzzing sound upper left of laptop

2021-06-06, 2:02 AM

Hello @Lorenzo_Lenovo thanks for your response. I can confirm that the laptop is running the latest BIOS (1.39 currently) and all drivers are up to date from the drivers support page. Issue persists.

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3 Posts

06-07-2021

Spain

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  • Message 5 of 16

Re:X1 Carbon Gen 9 - Buzzing sound upper left of laptop

2021-06-07, 16:28 PM

Sadly, I am experiencing the same issue. :( Any fix in the works, Lorenzo_Lenovo?

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90 Posts

08-15-2017

Netherlands

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  • Message 6 of 16

Re:X1 Carbon Gen 9 - Buzzing sound upper left of laptop

2021-06-07, 16:29 PM

Sounds :) o so familiar

 

https://forums.lenovo.com/t5/ThinkPad-X-Series-Laptops/Thinkpad-x1-Carbon-6th-Gen-Speakers-Cracking-Noise/m-p/4090154?page=6

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2074 Posts

01-08-2021

Philippines

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Re:X1 Carbon Gen 9 - Buzzing sound upper left of laptop

2021-06-08, 2:57 AM

Hello Carefree CFC and LausLenovo,

 


Welcome to Lenovo Community

 

 

Kindly try to uninstall the audio driver, completely remove it from the system by ticking the box to fully uninstall.

Then go to the support site, download and install a fresh copy of the driver.
Observe and update us how it goes.

 


Regards, 
Lorenzo_Lenovo



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88 Posts

07-15-2018

United States of America

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  • Message 8 of 16

Re:X1 Carbon Gen 9 - Buzzing sound upper left of laptop

2021-06-09, 15:33 PM

It is not from the speaker/audio system, the speaker is not over there. Speaker is at the bottom.

 

I think the noise is from 3 system board DC-DC stage power inductors, please see the attached photo which I took from your parts catalog. 

 

I think the noise is mainly from the top of the 3 inductors,  probably it works for the first stage---dropping 20v to 5v, which may be responsible for 50% of the laptop power. 

 

 

 

 

 

 

 

@ Lorenzo_Lenovo wrote:

Hello Carefree CFC and LausLenovo,

 


Welcome to Lenovo Community

 

 

Kindly try to uninstall the audio driver, completely remove it from the system by ticking the box to fully uninstall.

Then go to the support site, download and install a fresh copy of the driver.
Observe and update us how it goes.

 


Regards, 
Lorenzo_Lenovo

 

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2 Posts

06-09-2021

Austria

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  • Message 9 of 16

Re:X1 Carbon Gen 9 - Buzzing sound upper left of laptop

2021-06-09, 16:23 PM

That doesn't sound like something that can be solved with software... 

 

I uninstalled the audio drivers completely and downloaded the latest. No change (as expected)

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3 Posts

06-07-2021

Spain

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  • Message 10 of 16

Re:X1 Carbon Gen 9 - Buzzing sound upper left of laptop

2021-06-09, 21:15 PM

Fully agree. It sounds like some kind of electrical buzzing coming from the system board.

 

Also tried the audio driver "fix" and, needless to say, it did not work.

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