I tried the latest mainline (v5.10-rc5) and still have no audio.
extract from previously working dmesg
```bash $ egrep -i 'sound|audio|snd|hda' dmesg-5.4.0-52.txt kernel: ACPI: Added _OSI(Linux-Lenovo-NV-HDMI-Audio) kernel: snd_hda_intel 0000:00:1f.3: bound 0000:00:02.0 (ops i915_audio_component_bind_ops [i915]) kernel: snd_hda_codec_realtek hdaudioC0D0: autoconfig for ALC298: line_outs=1 (0x21/0x0/0x0/0x0/0x0) type:line kernel: snd_hda_codec_realtek hdaudioC0D0: speaker_outs=1 (0x14/0x0/0x0/0x0/0x0) kernel: snd_hda_codec_realtek hdaudioC0D0: hp_outs=1 (0x17/0x0/0x0/0x0/0x0) kernel: snd_hda_codec_realtek hdaudioC0D0: mono: mono_out=0x0 kernel: snd_hda_codec_realtek hdaudioC0D0: inputs: kernel: snd_hda_codec_realtek hdaudioC0D0: Mic=0x18 kernel: input: HDA Intel PCH Mic as /devices/pci0000:00/0000:00:1f.3/sound/card0/input20 kernel: input: HDA Intel PCH Headphone as /devices/pci0000:00/0000:00:1f.3/sound/card0/input21 kernel: input: HDA Intel PCH Dock Headphone as /devices/pci0000:00/0000:00:1f.3/sound/card0/input22 kernel: input: HDA Intel PCH HDMI/DP,pcm=3 as /devices/pci0000:00/0000:00:1f.3/sound/card0/input23 kernel: input: HDA Intel PCH HDMI/DP,pcm=7 as /devices/pci0000:00/0000:00:1f.3/sound/card0/input24 kernel: input: HDA Intel PCH HDMI/DP,pcm=8 as /devices/pci0000:00/0000:00:1f.3/sound/card0/input25 kernel: input: HDA Intel PCH HDMI/DP,pcm=9 as /devices/pci0000:00/0000:00:1f.3/sound/card0/input26 kernel: input: HDA Intel PCH HDMI/DP,pcm=10 as /devices/pci0000:00/0000:00:1f.3/sound/card0/input27 ```
Compare to current:
```bash $ dmesg | egrep -i 'sound|audio|snd|hda' [ 0.150788] ACPI: Added _OSI(Linux-Lenovo-NV-HDMI-Audio) [ 13.357495] snd_hda_intel 0000:00:1f.3: DSP detected with PCI class/subclass/prog-if info 0x040100 [ 13.357500] snd_hda_intel 0000:00:1f.3: Digital mics found on Skylake+ platform, using SST driver [ 13.382323] snd_soc_skl 0000:00:1f.3: DSP detected with PCI class/subclass/prog-if info 0x040100 [ 13.382327] snd_soc_skl 0000:00:1f.3: Digital mics found on Skylake+ platform, using SST driver [ 13.388130] snd_soc_skl 0000:00:1f.3: bound 0000:00:02.0 (ops i915_audio_component_bind_ops [i915]) [ 13.444116] HDMI HDA Codec ehdaudio0D2: Max dais supported: 3 ```
I tried the latest mainline (v5.10-rc5) and still have no audio.
extract from previously working dmesg
```bash audio|snd| hda' dmesg-5.4.0-52.txt Lenovo- NV-HDMI- Audio) component_ bind_ops [i915]) codec_realtek hdaudioC0D0: autoconfig for ALC298: line_outs=1 (0x21/0x0/ 0x0/0x0/ 0x0) type:line codec_realtek hdaudioC0D0: speaker_outs=1 (0x14/0x0/ 0x0/0x0/ 0x0) codec_realtek hdaudioC0D0: hp_outs=1 (0x17/0x0/ 0x0/0x0/ 0x0) codec_realtek hdaudioC0D0: mono: mono_out=0x0 codec_realtek hdaudioC0D0: inputs: codec_realtek hdaudioC0D0: Mic=0x18 pci0000: 00/0000: 00:1f.3/ sound/card0/ input20 pci0000: 00/0000: 00:1f.3/ sound/card0/ input21 pci0000: 00/0000: 00:1f.3/ sound/card0/ input22 pci0000: 00/0000: 00:1f.3/ sound/card0/ input23 pci0000: 00/0000: 00:1f.3/ sound/card0/ input24 pci0000: 00/0000: 00:1f.3/ sound/card0/ input25 pci0000: 00/0000: 00:1f.3/ sound/card0/ input26 pci0000: 00/0000: 00:1f.3/ sound/card0/ input27
$ egrep -i 'sound|
kernel: ACPI: Added _OSI(Linux-
kernel: snd_hda_intel 0000:00:1f.3: bound 0000:00:02.0 (ops i915_audio_
kernel: snd_hda_
kernel: snd_hda_
kernel: snd_hda_
kernel: snd_hda_
kernel: snd_hda_
kernel: snd_hda_
kernel: input: HDA Intel PCH Mic as /devices/
kernel: input: HDA Intel PCH Headphone as /devices/
kernel: input: HDA Intel PCH Dock Headphone as /devices/
kernel: input: HDA Intel PCH HDMI/DP,pcm=3 as /devices/
kernel: input: HDA Intel PCH HDMI/DP,pcm=7 as /devices/
kernel: input: HDA Intel PCH HDMI/DP,pcm=8 as /devices/
kernel: input: HDA Intel PCH HDMI/DP,pcm=9 as /devices/
kernel: input: HDA Intel PCH HDMI/DP,pcm=10 as /devices/
```
Compare to current:
```bash audio|snd| hda' Lenovo- NV-HDMI- Audio) prog-if info 0x040100 prog-if info 0x040100 component_ bind_ops [i915])
$ dmesg | egrep -i 'sound|
[ 0.150788] ACPI: Added _OSI(Linux-
[ 13.357495] snd_hda_intel 0000:00:1f.3: DSP detected with PCI class/subclass/
[ 13.357500] snd_hda_intel 0000:00:1f.3: Digital mics found on Skylake+ platform, using SST driver
[ 13.382323] snd_soc_skl 0000:00:1f.3: DSP detected with PCI class/subclass/
[ 13.382327] snd_soc_skl 0000:00:1f.3: Digital mics found on Skylake+ platform, using SST driver
[ 13.388130] snd_soc_skl 0000:00:1f.3: bound 0000:00:02.0 (ops i915_audio_
[ 13.444116] HDMI HDA Codec ehdaudio0D2: Max dais supported: 3
```