Comment 55 for bug 1874698

Hugh Chao:

I edited /etc/modprobe.d/alsa-base.conf by adding this line of code:

a. options snd-intel-dspcfg dsp_driver=1

I also edited it to remove this line of code:

b. options snd-hda-intel index=0 model=laptop-dmic

I also edited /etc/pulse/default.pa by re-adding these two lines of code:

c. load-module module-alsa-sink device=hw:0,0 channels=2
d. load-module module-alsa-source device=hw:0,6 channels=2

I restarted my HP PC and audio output shows Speakers- Built In Audio and clicking the Test button does produce audio from both the left and right speaker channels. Audio Input shows Internal Microphone - Built In Audio, but it does not seem to record the sound of my voice or background noise again.

This is my output from running inxi -Ax:

wellywu@late2019hpomen15t-pop-os:~$ inxi -Ax
Audio:
  Device-1: Intel Cannon Lake PCH cAVS vendor: Hewlett-Packard
  driver: snd_hda_intel v: kernel bus ID: 00:1f.3
  Device-2: NVIDIA TU104 HD Audio vendor: Hewlett-Packard
  driver: snd_hda_intel v: kernel bus ID: 01:00.1
  Sound Server: ALSA v: k5.4.0-7634-generic
wellywu@late2019hpomen15t-pop-os:~$

I ran sudo su - and put in my password and I ran sudo apt install linux-generic alsa-ucm-conf and this is my output:

wellywu@late2019hpomen15t-pop-os:~$ sudo su -
[sudo] password for wellywu:
root@late2019hpomen15t-pop-os:~# sudo apt install linux-generic alsa-ucm-conf
Reading package lists... Done
Building dependency tree
Reading state information... Done
linux-generic is already the newest version (5.4.0.7634.38~1591219791~20.04~6b1c5de).
alsa-ucm-conf is already the newest version (1.2.2-1ubuntu0.1).
0 upgraded, 0 newly installed, 0 to remove and 0 not upgraded.
root@late2019hpomen15t-pop-os:~# exit
logout
wellywu@late2019hpomen15t-pop-os:~$ uname -r
5.4.0-7634-generic
wellywu@late2019hpomen15t-pop-os:~$
NVIDIA
It looks like snd_hda_intel is the driver used for the Intel Cannon Lake PCH cAVS and NVIDIA TU104 HD Audio while the vendor changed to Hewlett Packard after following your instructions exactly.

Again, I apologize for sounding like an idiot, but what did following your instructions exactly do in terms of making changes? Why is it that my digital microphone changed from Rear Microphone - Built In Audio to Internal Microphone - Built In Audio and why does it still not pick up background audio or the sound of my voice?