BSOD when connecting bluetooth earbuds

[IP_2025]

HI,

I'm getting BSOD when connecting Sennheiser earbuds over bluetooth in Win 11 24H2 (regularly updated with latest updates). Problems started around April/May. Crashes were at first infrequent, then after updating Intel Bluetooth driver they became non-stop, then with latest driver version they are again intermittent. Is there something that can be done to avoid BSOD?

WinDbg analysis:

BUGCHECK_CODE:  7e

BUGCHECK_P1: ffffffffc0000005

BUGCHECK_P2: fffff8047026aa5d

BUGCHECK_P3: ffffbd802c0972b8

BUGCHECK_P4: ffffbd802c096aa0

FILE_IN_CAB:  082625-17765-01.dmp

TAG_NOT_DEFINED_202b:  *** Unknown TAG in analysis list 202b


DUMP_FILE_ATTRIBUTES: 0x21808
  Kernel Generated Triage Dump

FAULTING_THREAD:  ffff838f7360b040

EXCEPTION_RECORD:  ffffbd802c0972b8 -- (.exr 0xffffbd802c0972b8)ExceptionAddress: fffff8047026aa5d (ks!KsDispatchIrp+0x000000000000003d)
   ExceptionCode: c0000005 (Access violation)
  ExceptionFlags: 00000000
NumberParameters: 2
   Parameter[0]: 0000000000000000
   Parameter[1]: 0000000001480146
Attempt to read from address 0000000001480146

CONTEXT:  ffffbd802c096aa0 -- (.cxr 0xffffbd802c096aa0)rax=ffff838f6cec4830 rbx=ffff838f6cec4010 rcx=000000000000000e
rdx=0000000001480146 rsi=ffff838f4b765d60 rdi=fffff8048b7de0f0
rip=fffff8047026aa5d rsp=ffffbd802c0974f0 rbp=ffffbd802c097589
 r8=ffff838f4b765d60  r9=0000000000000000 r10=fffff8047026aa20
r11=0000000000000010 r12=000000000000000e r13=ffff838f6cec4010
r14=fffff8048b7de0e8 r15=ffff838f4b764d80
iopl=0         nv up ei pl nz na pe nc
cs=0010  ss=0018  ds=002b  es=002b  fs=0053  gs=002b             efl=00050202
ks!KsDispatchIrp+0x3d:
fffff804`7026aa5d 488b02          mov     rax,qword ptr [rdx] ds:002b:00000000`01480146=????????????????
Resetting default scope

BLACKBOXBSD: 1 (!blackboxbsd)


BLACKBOXNTFS: 1 (!blackboxntfs)


BLACKBOXPNP: 1 (!blackboxpnp)


BLACKBOXWINLOGON: 1

CUSTOMER_CRASH_COUNT:  1

PROCESS_NAME:  System

READ_ADDRESS: fffff804db9c44c0: Unable to get MiVisibleState
Unable to get NonPagedPoolStart
Unable to get NonPagedPoolEnd
Unable to get PagedPoolStart
Unable to get PagedPoolEnd
unable to get nt!MmSpecialPagesInUse
 0000000001480146 

ERROR_CODE: (NTSTATUS) 0xc0000005 - The instruction at 0x%p referenced memory at 0x%p. The memory could not be %s.

EXCEPTION_CODE_STR:  c0000005

EXCEPTION_PARAMETER1:  0000000000000000

EXCEPTION_PARAMETER2:  0000000001480146

EXCEPTION_STR:  0xc0000005

BAD_STACK_POINTER:  ffffbd802c0974f0

STACK_TEXT:  
ffffbd80`2c0974f0 fffff804`8b786d37     : 00000000`c0000002 00000000`00000001 ffff838f`4d609900 00000000`00000000 : ks!KsDispatchIrp+0x3d
ffffbd80`2c097530 fffff804`dac3650d     : ffff838f`4b765d60 ffff838f`7a6f54f0 ffff838f`4d609990 ffff838f`4f565a38 : BthA2dp!A2dpAudioIrpDispatcher+0x317
ffffbd80`2c0975f0 fffff804`8b1c1554     : ffff838f`6cec4010 ffffbd80`2c097680 ffff838f`6cec4878 ffff838f`50c31300 : nt!IofCallDriver+0xcd
ffffbd80`2c097630 fffff804`8b1c1273     : ffff838f`6cec4010 ffff838f`4f18c818 ffff838f`00000000 ffff838f`4f18c7f8 : ksthunk!CKernelFilterDevice::DispatchIrp+0xf4
ffffbd80`2c097690 fffff804`dac3650d     : ffff838f`7a6f54f0 fffff804`dad3149e ffff838f`4f18c7f8 00000000`00220013 : ksthunk!CKernelFilterDevice::DispatchIrpBridge+0x13
ffffbd80`2c0976c0 fffff804`8a20ed01     : ffff838f`6cec4010 00000000`00000001 00000000`00000000 fffff804`8a213046 : nt!IofCallDriver+0xcd
ffffbd80`2c097700 ffff838f`6cec4010     : 00000000`00000001 00000000`00000000 fffff804`8a213046 00000000`00000000 : IntcBTAu+0xed01
ffffbd80`2c097708 00000000`00000001     : 00000000`00000000 fffff804`8a213046 00000000`00000000 ffff838f`4f18c5d0 : 0xffff838f`6cec4010
ffffbd80`2c097710 00000000`00000000     : fffff804`8a213046 00000000`00000000 ffff838f`4f18c5d0 fffff804`8a22c048 : 0x1


SYMBOL_NAME:  ks!KsDispatchIrp+3d

MODULE_NAME: ks

IMAGE_NAME:  ks.sys

IMAGE_VERSION:  10.0.26100.4768

STACK_COMMAND: .cxr 0xffffbd802c096aa0 ; kb

BUCKET_ID_FUNC_OFFSET:  3d

FAILURE_BUCKET_ID:  AV_ks!KsDispatchIrp

OSPLATFORM_TYPE:  x64

OSNAME:  Windows 10

FAILURE_ID_HASH:  {a6a81db9-b2b0-cdaf-164d-9873fe259bec}

Followup:     MachineOwner
---------

[Mike_Intel]

Hello IP_2025,

Thank you for posting in Intel community Forum.

For me to better understand and diagnose the issue further, let me ask you to provide detailed responses to the following questions. This information will help me isolate the problem and determine the most appropriate course of action moving forward.

1. What is the model of your wireless controller?
2. What is the brand and model of your system?
3. What was the last change before the issue started?
4. Are you having the same issue when you try to connect other Bluetooth device aside from your earbuds?
5. How did you update the driver?
6. What are the troubleshooting steps that you tried aside from updating the driver?
7. For me to review the hardware and installed drivers. please help generate the SSU logs of your system. Kindly refer to the link below for the steps:

How to get the Intel® System Support Utility Logs on Windows*

If you have questions, please let us know. Thank you.

Best regards,

Michael L.

Intel Customer Support Technician

[Mike_Intel]

Hello IP_2025,

I hope this message finds you well. 

Were you able to check the previous post?

Please let us know if you still need assistance.

Best regards,

Michael L.

Intel Customer Support Technician

[IP_2025]

Hello,

1. What is the model of your wireless controller?

Intel Wi-Fi 6E AX211 Gig+

1. What is the brand and model of your system?

Lenovo ThinkPad P16s gen3

1. What was the last change before the issue started?

It occured once in May few days after updating through lenovo app + windows updates. After further windows monthly  updates it started to crash often.  I noticed it happened when laptop was locked or coming back from sleep.

1. Are you having the same issue when you try to connect other Bluetooth device aside from your earbuds?

I didn't notice it but I also rarely use any other bluetooth devices.

1. How did you update the driver?

Through Lenovo system update app. I've installed the latest Intel driver manually.

1. What are the troubleshooting steps that you tried aside from updating the driver?

Tried preventing the bluetooth device from turning off to save power through device manager. That helped for a while but then the problem came back in full swing with next win/driver update. Tried uninstalling latest windows updates - dodn't work. Then in August I updated to the latest Intel driver published on your site and it worked for a few days until crashing again. Now I get a crash maybe 1 out of 5 times I reconnect earbuds in a day, but it is totally random, I don't see any pattern anymore (like coming back from laptop lock screen or sleep, etc.).

Thank you for having a look into this.

[Mike_Intel]

Hello IP_2025,

Thank you for the update.

Based on the SSU logs, you are using Bluetooth driver version 23.140 and the latest Intel generic driver is 23.160. You can try to update to this driver and check. Here is the download link:

Intel® Wireless Bluetooth® Drivers for Windows® 10 and Windows 11*

If you have questions, please let us know. Thank you.

Best regards,

Michael L.

Intel Customer Support Technician

[IP_2025]

Hello Mike,

but I have exactly that latest version installed but Windows is showing different version number on WiFi and Bluetooth devices for some reason. Screenshot from device manager, SSU, and installed apps screens:

[Mike_Intel]

Hello IP_2025,

Thank you for the update.

That is weird, in the SSU logs, it is showing that the driver is not update.

Let me provide these steps instead and check if this one will help.

1. Based on the SSU, you are using BIOS 1.24. The latest is 1.60. Here is the link: BIOS Update (Utility & Bootable CD) for Windows 11, 10 (64-bit) - ThinkPad P14s Gen 3 (Type 21J5, 21J6), P16s Gen 1(Type 21CK, 21CL), T14 Gen 3 (Type 21CF, 21CG), T16 Gen 1 (Type 21CH, 21CJ) - Lenovo Support US. Please try check this first with Lenovo if this is the correct BIOS for your system then update to the latest.
2. Then load the latest driver for wireless and Bluetooth again and check if you will get BSOD again.

If you have questions, please let us know. Thank you.

Best regards,

Michael L.

Intel Customer Support Technician

[IP_2025]

Hello Mike,

Thank you for your assistance.

1. BIOS 1.24 is the latest version for my model (checked through Lenovo system updater and using serial number on their web). 

2. Well, technically, Bluetooth device driver is the correct (latest) version. I'm not really sure why is SSU using version from WiFi device driver but I'm not sure if it is even relevant, network device/driver is working great. In my initial post I've added a dump file analysis with a stack trace from which it is obvious there is some issue with Bluetooth audio part and stack trace is consistent on every BSOD. It would be great if this could be escalated to the dev department for them to also have a look as I really don't see what else can I update. I've also tried removing all devices from device manager, then reinstalling them. The only benefit after all the latest updates is that crashes are for some reason less frequent but picking up any call still causes real anxiety and not even for the right reasons :-).

Best regards