Problem with HP Laptops

[BALEMBOY Marc <marc.balemboy@xxxxxxxxxx>]

Hello,

I have trouble making ALSA work with two HP laptops (HP Elitebook 850 G6 and HP Elitebook 850 G7).

I have two differents problems ;

• capturing sound with the internals microphones
• get alsa to recognize an USB audiocard to bluetooth headset (headset+mic)

Here's where i'm at on the first problem, i'll focus on the G6 model ;

using aplay i can succesfully play a sound using the onboard speakers, or play and capture sound with headset and mic plugged on the onboard jack. But when i try to use the onboard mic i get only static.

I've tried recording with : 

• arecord test.wav (works on jack mic) which give me static noise
  
• arecord -f S16_LE --device="hw:0,6" or arecord -f S16_LE --device="hw:0,7" 
• both get an error arecord:set_params:1349: Channels count non available

Apps (like browsers) don't recognize the internal microphone.

Using arecord it looks like everyhting is recognized :

arecord  -l

**** Liste des Périphériques Matériels CAPTURE ****

carte 0: sofhdadsp [sof-hda-dsp], périphérique 0: HDA Analog (*) []

  Sous-périphériques: 1/1

  Sous-périphérique #0: subdevice #0

carte 0: sofhdadsp [sof-hda-dsp], périphérique 1: HDA Digital (*) []

  Sous-périphériques: 1/1

  Sous-périphérique #0: subdevice #0

carte 0: sofhdadsp [sof-hda-dsp], périphérique 6: DMIC (*) []

  Sous-périphériques: 1/1

  Sous-périphérique #0: subdevice #0

carte 0: sofhdadsp [sof-hda-dsp], périphérique 7: DMIC16kHz (*) []

  Sous-périphériques: 1/1

  Sous-périphérique #0: subdevice #0

Checking on the kernel : everything looks fine too :

cat /proc/asound/card0/codec#* | grep -A 8 Codec

Codec: Realtek ALC215

Address: 0

AFG Function Id: 0x1 (unsol 1)

Vendor Id: 0x10ec0215

Subsystem Id: 0x103c854f

Revision Id: 0x100002

No Modem Function Group found

Default PCM:

    rates [0x560]: 44100 48000 96000 192000

--

Codec: Intel Kabylake HDMI

Address: 2

AFG Function Id: 0x1 (unsol 0)

Vendor Id: 0x8086280b

Subsystem Id: 0x80860101

Revision Id: 0x100000

No Modem Function Group found

Default PCM:

    rates [0x0]:4

I'm currently using a custom 5.15.23 Kernel (i've tried mostly  Kernel 5.4, 5.10 too) with sof-firmware 1.6.1, 

drivers are loaded as modules (i couldn't make it so far with in-kernel module)

Here is a link to loaded modules : https://dpaste.com/EZ2LHXSGU

On a side note, the laptop does have a mute key with a LED that is not workingand always on. I've tried using the option "model=hp-mute-led-mic3" in /etc/modprobe/asla.conf with no success.

I'm lost on what to do now to go further.

Regarding the second problem, with the usb "sound card", i got the following error from the kernel when plugging it :

[86824.525839] input: Plantronics Poly BT700 as /devices/pci0000:00/0000:00:14.0/usb1/1-2/1-2.1/1-2.1:1.3/0003:047F:02E8.0005/input/input26

[86824.577745] plantronics 0003:047F:02E8.0005: input,hiddev0,hidraw0: USB HID v1.11 Device [Plantronics Poly BT700] on usb-0000:00:14.0-2.1/input3

[86824.618332] udevd[61660]: error opening ATTR{/sys/devices/pci0000:00/0000:00:14.0/usb1/1-2/1-2.1/1-2.1:1.0/sound/card1/controlC1/../uevent} for writing: No such file or directory

I've yet to try more in order to get the sound card recognized by ALSA.

In any case, I can provide more info if needed.

Regards,

Marc 

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