No sound on Chromebook 11e converted from ChromeOS

Converted Chrome OS to Xubuntu 21.10 (tried 20.04) as well. All good but nod sound.

Mixer only shows dummy output. Tried some tricks from here but no luck: Fix No Sound (Dummy Output) Issue In Ubuntu With SND HDA Intel

dmesg showing error:

[ 6.040092] sof-audio-acpi-intel-byt 80860F28:00: error: tplg request firmware intel/sof-tplg/sof-byt-max98090.tplg failed err: -2
[ 6.040100] sof-audio-acpi-intel-byt 80860F28:00: you may need to download the firmware from 

Hardware:

00:1b.0 Audio device: Intel Corporation Atom Processor Z36xxx/Z37xxx Series High Definition Audio Controller (rev 0e)

APlay:

card 0: PCH [HDA Intel PCH], device 3: HDMI 0 [HDMI 0] Subdevices: 1/1 Subdevice #0: subdevice #0
card 0: PCH [HDA Intel PCH], device 7: HDMI 1 [HDMI 1] Subdevices: 1/1 Subdevice #0: subdevice #0

1 Answer

Try manually copying sof-bin firmware to /lib/firmware/intel/sof-tplg/ folder. See instructions in the answer of no sound due to error direct firmware load failed for intel/sof-tplg/sof-byt-max98090.tplg

(I am not a developer, just a regular user who encountered a similar problem. )