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Bug 736958 - No audio on Lenovo Yoga C940
Summary: No audio on Lenovo Yoga C940
Status: RESOLVED NEEDINFO
Alias: None
Product: Gentoo Linux
Classification: Unclassified
Component: Current packages (show other bugs)
Hardware: All Linux
: Normal normal
Assignee: Gentoo Linux bug wranglers
URL:
Whiteboard:
Keywords:
Depends on:
Blocks:
 
Reported: 2020-08-13 09:17 UTC by Roman Zimmermann
Modified: 2020-08-13 21:22 UTC (History)
1 user (show)

See Also:
Package list:
Runtime testing required: ---


Attachments
ls -R /lib/modules/$(uname -r)/kernel/sound (kernel-modules,5.69 KB, text/plain)
2020-08-13 09:17 UTC, Roman Zimmermann
Details
lspci -kvvnn (file_208895.txt,711 bytes, text/plain)
2020-08-13 09:18 UTC, Roman Zimmermann
Details

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Description Roman Zimmermann 2020-08-13 09:17:26 UTC
Created attachment 654422 [details]
ls -R /lib/modules/$(uname -r)/kernel/sound

On my Lenovo Yoga C940 I can’t get my audio to work at all. The sound card is not recognized:

[   94.800759] sof-audio-pci 0000:00:1f.3: DSP detected with PCI class/subclass/prog-if info 0x040100
[   94.800837] sof-audio-pci 0000:00:1f.3: Digital mics found on Skylake+ platform, using SOF driver
[   94.800845] sof-audio-pci 0000:00:1f.3: enabling device (0000 -> 0002)
[   94.800944] sof-audio-pci 0000:00:1f.3: DSP detected with PCI class/subclass/prog-if 0x040100
[   94.803437] sof-audio-pci 0000:00:1f.3: use msi interrupt mode
[   94.807780] sof-audio-pci 0000:00:1f.3: warning: No matching ASoC machine driver found
[   94.807782] sof-audio-pci 0000:00:1f.3: Using nocodec machine driver
[   94.886673] sof-audio-pci 0000:00:1f.3: Firmware info: version 1:5:1-88707
[   94.886675] sof-audio-pci 0000:00:1f.3: Firmware: ABI 3:16:0 Kernel ABI 3:13:0
[   94.886675] sof-audio-pci 0000:00:1f.3: warn: FW ABI is more recent than kernel
[   94.886967] sof-audio-pci 0000:00:1f.3: warning: unknown ext header type 3 size 0x1c
[   94.886985] sof-audio-pci 0000:00:1f.3: warning: unknown ext header type 4 size 0x10
[   94.888563] sof-audio-pci 0000:00:1f.3: Topology: ABI 3:16:0 Kernel ABI 3:13:0
[   94.888564] sof-audio-pci 0000:00:1f.3: warn: topology ABI is more recent than kernel
[   94.891635] sof-audio-pci 0000:00:1f.3: ASoC: Parent card not yet available, widget card binding deferred

Relevant packages:

sys-kernel/gentoo-source-5.7.11
sys-firmware/sof-firmware-1.5.1

In my kernel configuration I’ve enabled all related modules.
Comment 1 Roman Zimmermann 2020-08-13 09:18:29 UTC
Created attachment 654424 [details]
lspci -kvvnn

Here is the output of lspci for this device.
Comment 2 Jonas Stein gentoo-dev 2020-08-13 21:22:05 UTC
It is sad to read that you have problems with the kernel. The situation seems to be a bit more complicate and requires some analysis.
We can not help you efficiently via bug tracker. The bug tracker aims rather on specific problems in .ebuilds and less on individual systems. 

I have had very good experience on the gentoo IRC [1] with questions like this. Of course there are also forums and mailing lists [2,3].
I hope you understand, that I will close the bug here therefore and wish you good luck on one of the mentioned channels [4].
Please reopen the ticket in order to provide an indication for an specific error in an ebuild or any gentoo related product.

[1] https://www.gentoo.org/get-involved/irc-channels/
[2] https://forums.gentoo.org/
[3] https://www.gentoo.org/get-involved/mailing-lists/all-lists.html
[4] https://www.gentoo.org/support/