[BUG] No sound for Intel Cannon Lake PCH cAVS on Legion Y9000X 2020

[fbl718]

Describe the bug

No sound from speakers, but from headphones. Both speakers and headphones can be detected correctly. Although the sound of the speakers can be temporarily fixed by #2748 (comment), the speakers still have no sound after plugging in and out headphones.

To Reproduce

No special steps to reproduce (the issue is always there right after boot).

Reproduction Rate

100%

Expected behavior

Audible sound.

Environment

Manufacturer: LENOVO
Product Name: 81TH
Product Version: Lenovo Legion Y9000X 2020
Firmware Version: CTCN19WW(V1.04)
System SKU: LENOVO_MT_81TH_BU_idea_FM_Legion Y9000X 2020
Board Vendor: LENOVO
Board Name: LNVNB161216
Kernel: 5.15.12-051512-generic
Distribution: Ubuntu 20.04.3 LTS
Detailed information can be checked by sudo alsa-info --no-upload.
This is my also-info.txt.

Bug

• No sound from speakers after booting
• No sound from speakers after unplugging the headphones

[fbl718]

To solve the problem, I borrowed solution from Ryan Prescott and Cameron Berkenpas.

Luckily, I found a fix for v5.15.11 and v5.15.12. I have submitted the patch to alsa, and you can try apply the patch to fix the speaker problem in Legion Y9000X 2020. It should work for kernel after v5.14.10, although I only tested it for v5.15.11 and v5.15.12.

What's fixed

• No sound from speakers after booting
• No sound from speakers after unplugging the headphones

[plbossart]

Nice work @fbl718, thanks for sharing your results.

I'll close this issue since it's unrelated to SOF.