2020 dell xps 17" no sound. Dummy outpiut

[gks]

Have tried many linux distros since got my new Dell XPS 17". Understand I would have to wait until Linux Kernel 5.8 released as well as Pulseaudio 14.
I just switched from Macbook Pro and will not install Windows 10 no matter what problems I encounter. Computer list from lshw -short: any thoughts appreciated.


\H/W path          Device    Class          Description
========================================================
                              system        Computer
/0                            bus            Motherboard
/0/0                          memory        31GiB System memory
/0/1                          processor      Intel® Core™ i7-10750H CPU @ 2.60GH
/0/100                        bridge        10th Gen Core Processor Host Bridge/DRAM
/0/100/1                      bridge        Xeon E3-1200 v5/E3-1500 v5/6th Gen Core
/0/100/1/0                    display        NVIDIA Corporation
/0/100/2                      display        UHD Graphics
/0/100/4                      generic        Xeon E3-1200 v5/E3-1500 v5/6th Gen Core
/0/100/8                      generic        Xeon E3-1200 v5/v6 / E3-1500 v5 / 6th/7t
/0/100/12                    generic        Comet Lake PCH Thermal Controller
/0/100/13                    communication  Intel Corporation
/0/100/14                    bus            Comet Lake USB 3.1 xHCI Host Controller
/0/100/14.2                  memory        RAM memory
/0/100/14.3        wlp0s20f3  network        Wi-Fi 6 AX201
/0/100/15                    bus            Comet Lake PCH Serial IO I2C Controller
/0/100/15.1                  bus            Comet Lake PCH Serial IO I2C Controller
/0/100/16                    communication  Comet Lake HECI Controller
/0/100/1b                    bridge        Comet Lake PCI Express Root Port #17
/0/100/1b/0                  storage        Micron Technology Inc
/0/100/1b.4                  bridge        Comet Lake PCI Express Root Port #21
/0/100/1b.4/0                storage        Micron Technology Inc
/0/100/1c                    bridge        Intel Corporation
/0/100/1c/0                  generic        RTS5260 PCI Express Card Reader
/0/100/1c.4                  bridge        Intel Corporation
/0/100/1c.4/0                bridge        JHL7540 Thunderbolt 3 Bridge [Titan Ridg
/0/100/1c.4/0/0              bridge        JHL7540 Thunderbolt 3 Bridge [Titan Ridg
/0/100/1c.4/0/0/0            generic        JHL7540 Thunderbolt 3 NHI [Titan Ridge 4
/0/100/1c.4/0/1              bridge        JHL7540 Thunderbolt 3 Bridge [Titan Ridg
/0/100/1c.4/0/2              bridge        JHL7540 Thunderbolt 3 Bridge [Titan Ridg
/0/100/1c.4/0/2/0            bus            JHL7540 Thunderbolt 3 USB Controller [Ti
/0/100/1c.4/0/4              bridge        JHL7540 Thunderbolt 3 Bridge [Titan Ridg
/0/100/1d                    bridge        Comet Lake PCI Express Root Port #9
/0/100/1d/0                  bridge        JHL7540 Thunderbolt 3 Bridge [Titan Ridg
/0/100/1d/0/0                bridge        JHL7540 Thunderbolt 3 Bridge [Titan Ridg
/0/100/1d/0/0/0              generic        JHL7540 Thunderbolt 3 NHI [Titan Ridge 4
/0/100/1d/0/1                bridge        JHL7540 Thunderbolt 3 Bridge [Titan Ridg
/0/100/1d/0/2                bridge        JHL7540 Thunderbolt 3 Bridge [Titan Ridg
/0/100/1d/0/2/0              bus            JHL7540 Thunderbolt 3 USB Controller [Ti
/0/100/1d/0/4                bridge        JHL7540 Thunderbolt 3 Bridge [Titan Ridg
/0/100/1f                    bridge        Intel Corporation
/0/100/1f.3                  multimedia    Comet Lake PCH cAVS
/0/100/1f.4                  bus            Comet Lake PCH SMBus Controller
/0/100/1f.5                  bus            Comet Lake PCH SPI Controller
/0/2                          system        PnP device PNP0c02
/0/3                          system        PnP device PNP0c02
/0/4                          system        PnP device PNP0c02
/0/5                          system        PnP device PNP0b00
/0/6                          generic        PnP device INT3f0d
/0/7                          input          PnP device PNP0303
/0/8                          generic        PnP device DLL098f
/0/9                          system        PnP device PNP0c02
/0/a                          system        PnP device PNP0c02

[TheDead]

I had a strandge behavior that if I did not have anything plugged in the audio port, it would not detect it.
Try and connect speakers or headphones and reboot.

[Şerban S.]

I had a strandge behavior that if I did not have anything plugged in the audio port, it would not detect it.
Try and connect speakers or headphones and reboot.

Hi!
It is a bug in the upgrade script that messes the GRUB installation. Possibly, only on UEFI firmware (my case).
I had to revert to Lite 5.2. See my previous post,

https://www.linuxliteos.com/forums/relea.../#msg55537

[Valtam]

It is a bug in the upgrade script that messes the GRUB installation. Possibly, only on UEFI firmware (my case).

Please stop making false statements.

[TheDead]

It is a bug in the upgrade script that messes the GRUB installation. Possibly, only on UEFI firmware (my case).

The bug I refer to is much "older" than that. I'm not sure but could go back to LiLi 3.x.
100% sure though that its was not 5.x, Upgrade or UEFI related since it was on last version 4 last I got it and in legacy.
Educated guess that it would be audio chipset brand / driver and or kernel related.
I will pay more attention next time I come accross the problem since I come across a system doing it from time to time.
Bonus: I think, pulseaudio --kill also solved it.

[firenice03]

[member=37212]gks[/member]
Double check all the audio settings that a mute isn't enabled somewhere within... I recall something I had would mute...
Try as mentioned with other device - internal speaker, external/headphones - and ports?? if you have multiple...

perhaps the output of .. to see device/driver...

Code:

inxi -Fxz