Using a Lenovo x1 7th generation, I've installed 5.3.0-20 and verified
that I see
"# CONFIG_SND_SOC_SOF_NOCODEC_SUPPORT is not set"
(I don't see any of the SKYLAKE changes on the other thread.)
I've added the following blacklist lines to modprobe.d:
blacklist snd_hda_intel
blacklist snd_soc_skl
I see Input Device as "Multichannel Input - Cannon Point-LP High
Definition Audio Controller" in sound preferences, and card sof-
skl_hda_card in alsamixer. The speakers work, but the mic does not pick
anything up.
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https://bugs.launchpad.net/bugs/1848490
Title:
eoan: alsa/sof: Enable SOF_HDA link and codec
Status in linux package in Ubuntu:
Fix Committed
Status in linux source package in Eoan:
Fix Committed
Bug description:
[Impact]
We tested the EOAN kernel on the LENOVO or Dell machines which have
dmic directly connnected to PCH, the dmic didn't work.
[Fix]
We need to enable SOF_HDA link and codec, then the sof driver
and Legacy HDA driver work together to make the dmic work.
[Test Case]
Install the latest 19.10 image, build a new kernel with this
patch and replace the existing kernel, After installing the blacklist
package (blacklist snd_hda_intel and snd_soc_skl) and ucm package,
the dmic and all output devices (speaker/hdmi) work.
[Regression Risk]
Low, these configs are already enabled in the oem-b-osp1 kernel
for a long time, and we tested it on many lenovo/dell machines witch
have or have no dmic, all worked well.
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