HP Zbook 17 G6 internal microphone causes hard crashes

[Jesse M Darnley]

Anything that changes the state of the internal microphone on the HP Zbook 17 G6 can result in a hard crash of the entire system. This includes things like noise reduction being applied by Google Meets, but it can be reliably replicated by just changing the volume of the microphone until the system crashes. When the crashes occur, the logs cut off just as they would if the system's power were completely cut.

This behavior only occurs with the internal microphone. External microphones (both 3.5 mm TRRS and USB microphones) do not exhibit this same behavior.

This behavior has been tested on 20.04, 22.04, 23.04, and 23.10 and reliably occurs on kernels 5.4, 5.15, 6.2, and 6.5.

This is the system device that should be responsible for handling the internal microphone.

description: Multimedia audio controller
             product: Cannon Lake PCH cAVS
             vendor: Intel Corporation
             physical id: 1f.3
             bus info: pci@0000:00:1f.3
             logical name: card0
             logical name: /dev/snd/controlC0
             logical name: /dev/snd/hwC0D0
             logical name: /dev/snd/hwC0D2
             logical name: /dev/snd/pcmC0D0c
             logical name: /dev/snd/pcmC0D0p
             logical name: /dev/snd/pcmC0D31p
             logical name: /dev/snd/pcmC0D3p
             logical name: /dev/snd/pcmC0D4p
             logical name: /dev/snd/pcmC0D5p
             logical name: /dev/snd/pcmC0D6c
             logical name: /dev/snd/pcmC0D7c
             version: 10
             width: 64 bits
             clock: 33MHz
             capabilities: pm msi bus_master cap_list
             configuration: driver=sof-audio-pci-intel-cnl latency=64
             resources: iomemory:400-3ff iomemory:400-3ff irq:191 memory:404a108000-404a10bfff memory:404a000000-404a0fffff

[Marc Deslauriers (mdeslaur)]

Can I make this bug public so that the appropriate developers can see it?

[Jesse M Darnley (jmdarn)]

Hi Team,

Sorry for the delay, I forgot to mark myself as Out of Office for
yesterday. The customer got back to me on this and indicated that there is
no sensitive or secret information contained in the bug report as is, so it
can be made public. Apologies for any sort of confusion this caused.

On Thu, Nov 23, 2023 at 9:50 AM Marc Deslauriers <email address hidden>
wrote:

> Can I make this bug public so that the appropriate developers can see
> it?
>
> --
> You received this bug notification because you are subscribed to the bug
> report.
> https://bugs.launchpad.net/bugs/2043733
>
> Title:
> HP Zbook 17 G6 internal microphone causes hard crashes
>
> Status in linux package in Ubuntu:
> New
>
> Bug description:
> Anything that changes the state of the internal microphone on the HP
> Zbook 17 G6 can result in a hard crash of the entire system. This
> includes things like noise reduction being applied by Google Meets,
> but it can be reliably replicated by just changing the volume of the
> microphone until the system crashes. When the crashes occur, the logs
> cut off just as they would if the system's power were completely cut.
>
> This behavior only occurs with the internal microphone. External
> microphones (both 3.5 mm TRRS and USB microphones) do not exhibit this
> same behavior.
>
> This behavior has been tested on 20.04, 22.04, 23.04, and 23.10 and
> reliably occurs on kernels 5.4, 5.15, 6.2, and 6.5.
>
> This is the system device that should be responsible for handling the
> internal microphone.
>
> description: Multimedia audio controller
> product: Cannon Lake PCH cAVS
> vendor: Intel Corporation
> physical id: 1f.3
> bus info: pci@0000:00:1f.3
> logical name: card0
> logical name: /dev/snd/controlC0
> logical name: /dev/snd/hwC0D0
> logical name: /dev/snd/hwC0D2
> logical name: /dev/snd/pcmC0D0c
> logical name: /dev/snd/pcmC0D0p
> logical name: /dev/snd/pcmC0D31p
> logical name: /dev/snd/pcmC0D3p
> logical name: /dev/snd/pcmC0D4p
> logical name: /dev/snd/pcmC0D5p
> logical name: /dev/snd/pcmC0D6c
> logical name: /dev/snd/pcmC0D7c
> version: 10
> width: 64 bits
> clock: 33MHz
> capabilities: pm msi bus_master cap_list
> configuration: driver=sof-audio-pci-intel-cnl latency=64
> resources: iomemory:400-3ff iomemory:400-3ff irq:191
> memory:404a108000-404a10bfff memory:404a000000-404a0fffff
>
> To manage notifications about this bug go to:
> https://bugs.launchpad.net/ubuntu/+source/linux/+bug/2043733/+subscriptions
>
>

[Jesse M Darnley (jmdarn)]

Confirmed there is no sensitive data included and set to public. Apologies for any confusion.

[Jordan Garcia (jordanmg13)]

Hello!

Just checking in on this bug to see if there is any new info.