[PATCH v2 0/1][SRU][H/I] Fix no sound card detected problem on HDA+DMIC with skylake driver

chris.chiu at canonical.com chris.chiu at canonical.com
Wed Jul 28 05:08:19 UTC 2021

From: Chris Chiu <chris.chiu at canonical.com>

BugLink: https://bugs.launchpad.net/bugs/1915117

Skylake, Kabylake, Kabylake-refresh, Amberlake and some other platforms where audio is of SPT (PCH) type, HDA (with DSP capabilities) plus DMIC configuration is supported on these with skylake driver since kernel 5.8. However, no sound card can be detected w/o the topology binary file in /lib/firmware and corresponding ucm file.

The kernel config CONFIG_SND_SOC_INTEL_SKYLAKE_HDAUDIO_CODEC needa to be enabled for the snd_soc_skl driver to support HDA+DMIC configuration. And the topology binary file and UCM files need to be located in the correct path based on Intel's suggestion. https://gist.github.com/crojewsk/4e6382bfb0dbfaaf60513174211f29cb.

On the Skylake/Kabylake platforms with either the PCI device 8086:9d70 and 8086:9d71, boot up the machine and check the existence of the sound card by either 'aplay -l' or 'pactl list' command.

[Where problems could occur]
Should be low risk, it only affects limited Intel Platforms with particular PCI device IDs + HDA plus DMIC configuration.

V2: Use the LP:1915117 for note intead of deprecated for the

Chris Chiu (1):

 debian.master/config/annotations          | 4 ++--
 debian.master/config/config.common.ubuntu | 2 +-
 2 files changed, 3 insertions(+), 3 deletions(-)


More information about the kernel-team mailing list