Dear Maintainer, This issue is preventing audio working on a 7th generation Lenovo X1 Carbon (released 2019). After boot, no sound output device is available. The following lines appear in dmesg:
[ 28.941465] sof-audio-pci 0000:00:1f.3: DSP detected with PCI class/subclass/prog-if info 0x040380 [ 28.941549] sof-audio-pci 0000:00:1f.3: Digital mics found on Skylake+ platform, using SOF driver [ 28.941653] sof-audio-pci 0000:00:1f.3: DSP detected with PCI class/subclass/prog-if 0x040380 [ 28.941729] sof-audio-pci 0000:00:1f.3: bound 0000:00:02.0 (ops i915_audio_component_bind_ops [i915]) [ 28.946341] sof-audio-pci 0000:00:1f.3: use msi interrupt mode [ 28.962335] sof-audio-pci 0000:00:1f.3: hda codecs found, mask 5 [ 28.962337] sof-audio-pci 0000:00:1f.3: using HDA machine driver skl_hda_dsp_generic now [ 28.962880] sof-audio-pci 0000:00:1f.3: firmware: failed to load intel/sof/sof-cnl.ri (-2) [ 28.962911] firmware_class: See https://wiki.debian.org/Firmware for information about missing firmware [ 28.962941] sof-audio-pci 0000:00:1f.3: Direct firmware load for intel/sof/sof-cnl.ri failed with error -2 [ 28.962943] sof-audio-pci 0000:00:1f.3: error: request firmware intel/sof/sof-cnl.ri failed err: -2 [ 28.962972] sof-audio-pci 0000:00:1f.3: error: failed to load DSP firmware -2 [ 28.963207] sof-audio-pci 0000:00:1f.3: error: sof_probe_work failed err: -2 I've searched on https://packages.debian.org/ and found no packages in the archive with sof-cnl.ri. On Ubuntu 20.04, I see this file is available in a package called "linux-firmware" -- System Information: Debian Release: bullseye/sid APT prefers testing APT policy: (500, 'testing') Architecture: amd64 (x86_64) Kernel: Linux 5.6.0-1-amd64 (SMP w/8 CPU cores) Locale: LANG=en_AU.UTF-8, LC_CTYPE=en_AU.UTF-8 (charmap=UTF-8), LANGUAGE=en_AU:en (charmap=UTF-8) Shell: /bin/sh linked to /usr/bin/dash Init: systemd (via /run/systemd/system) LSM: AppArmor: enabled
