Sound card is available, and sound can be output to the internal speakers.Ĥ. Check that `alsa-info` command returns informationĢ. Check that sound output works as excepted (Settings > Sound > Output > Test)ģ. However, if I select kernel 5.4 in GRUB, the sound card is available.ġ. Multimedia audio controller : Intel Corporation Sunrise Point-LP HD Audio (rev 21)Īfter upgrading from linux kernel 5.4 to 5.8, there is no more sound card available. Ubuntu version: 20.10 (updated from 20.04)Īudio card: Realtek High Definition Audio Should be low risk, it only affects limited Intel Platforms with particular PCI device IDs + HDA plus DMIC configuration. On the Skylake/Kabylake platforms with either the PCI device 8086:9d:9d71, boot up the machine and check the existence of the sound card by either 'aplay -l' or 'pactl list' command. And the topology binary file and UCM files need to be located in the correct path based on Intel's suggestion. 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. However, no sound card can be detected w/o the topology binary file in /lib/firmware and corresponding ucm file. 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.
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