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h2s
Fanfold Paper
Posts: 12
Registered: ‎07-16-2019
Location: BE
Views: 510
Message 1 of 9

Disabling microphone makes computer crash

I have a Thinkpad E595. I don't use the camera and microphone so I want to disable them completely.

But if I disable the Microphone in BIOS (security -> I/O), the computer crashes (blue screen) within minutes after launching Windows (in most cases even before I have the time to login).

Error code: SYSTEM_THREAD_EXCEPTION_NOT_HANDLED

What failed: CHDRT64LPAP.sys (<< this is part of the synaptics/conexant HD Audio driver and is located in C:\Windows\System32\Drivers)

 

If I re-enable the Microphone in BIOS, the problem disappears.

I tried with all available BIOS and drivers versions, but this makes no difference.

 

Anyone willing to test on their Thinkpad (E595 or E495) if they have the same issue? Maybe other Thinkpads models have the same problem too?

Or anyone knows how to resolve it?

 

Thank you!

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Lenovo Staff
Lenovo Staff
Posts: 5,761
Registered: ‎10-29-2009
Location: NC
Views: 485
Message 2 of 9

Re: Disabling microphone makes computer crash

I checked my E495 and see the same thing as you.  I will report this to E495 product team.  Sorry for this trouble.

h2s
Fanfold Paper
Posts: 12
Registered: ‎07-16-2019
Location: BE
Views: 478
Message 3 of 9

Re: Disabling microphone makes computer crash

Thank you very much for checking and confirming this is not just a problem with my individual laptop!

 

Local support told me to return my laptop for investigation, but as you will report it to the product team, I assume that is no longer needed and I can keep using my E595.

 

Thx again!

Lenovo Staff
Lenovo Staff
Posts: 5,761
Registered: ‎10-29-2009
Location: NC
Views: 430
Message 4 of 9

Re: Disabling microphone makes computer crash

E495 product team tells me that this issue will be fixed in the next version of audio driver.  But I don't know the release date yet.  Thanks for reporting this, and sorry for the trouble it has caused.   (E495 and E595 share same drivers)

h2s
Fanfold Paper
Posts: 12
Registered: ‎07-16-2019
Location: BE
Views: 414
Message 5 of 9

Re: Disabling microphone makes computer crash

That's great news.

Thank you for the excellent support!

noobsie
Paper Tape
Posts: 3
Registered: ‎07-26-2019
Location: DE
Views: 276
Message 6 of 9

Re: Disabling microphone makes computer crash

So I just discovered the same problem on my E595, so OP you are not alone.

Any news yet on a new release of the sound driver?

Lenovo Staff
Lenovo Staff
Posts: 5,761
Registered: ‎10-29-2009
Location: NC
Views: 224
Message 7 of 9

Re: Disabling microphone makes computer crash

The new audio driver is currently being tested.  Sorry I still don't have a firm release date but I think it should be within August.

Lenovo Staff
Lenovo Staff
Posts: 5,761
Registered: ‎10-29-2009
Location: NC
Views: 155
Message 8 of 9

Re: Disabling microphone makes computer crash

The fix driver is available here:

https://pcsupport.lenovo.com/us/en/products/LAPTOPS-AND-NETBOOKS/THINKPAD-EDGE-LAPTOPS/THINKPAD-E595...

 

 

<9.0.272.0> (R11AC15W)
- (Fix) Fixed an issue that pressing the Volume Up/Down and Play/Pause buttons will add four instead of two after restart or shutdown after manual install of SmartAudio3.
- (Fix) Fixed an issue that system BSOD after disabling microphone in BIOS setup (security -> I/O)

 

h2s
Fanfold Paper
Posts: 12
Registered: ‎07-16-2019
Location: BE
Views: 128
Message 9 of 9

Re: Disabling microphone makes computer crash

Thank you!

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