I've noticed some RED messages in dmesg, though - the latest seem to be relevant:
[ 0.089089] x86/cpu: SGX disabled by BIOS.
[ 0.670858] pci 0000:00:07.0: DPC: RP PIO log size 0 is invalid
[ 0.672459] pci 0000:00:07.1: DPC: RP PIO log size 0 is invalid
[ 0.674048] pci 0000:00:07.2: DPC: RP PIO log size 0 is invalid
[ 0.675635] pci 0000:00:07.3: DPC: RP PIO log size 0 is invalid
[ 30.127898] snd_hda_codec_realtek ehdaudio0D0: didn't find PCM for DAI Digital Codec DAI
[ 30.127909] snd_hda_codec_realtek ehdaudio0D0: ASoC: error at snd_soc_dai_startup on Digital Codec DAI: -22
[ 30.127915] Digital Playback and Capture: soc_pcm_open() failed (-22)
[ 30.127919] HDA Digital: ASoC: dpcm_be_dai_startup() failed at Digital Playback and Capture (-22)
[ 30.127922] HDA Digital: dpcm_fe_dai_startup() failed (-22)
[ 30.128026] snd_hda_codec_realtek ehdaudio0D0: didn't find PCM for DAI Digital Codec DAI
[ 30.128030] snd_hda_codec_realtek ehdaudio0D0: ASoC: error at snd_soc_dai_startup on Digital Codec DAI: -22
[ 30.128034] Digital Playback and Capture: soc_pcm_open() failed (-22)
[ 30.128036] HDA Digital: ASoC: dpcm_be_dai_startup() failed at Digital Playback and Capture (-22)
[ 30.128039] HDA Digital: dpcm_fe_dai_startup() failed (-22)
@Jaroslav: OK, I've just tested that.
5) only alc255-acer: ======= ====== \EFI\Pop_ OS-a99686bf- c48a-464b- af3a-25f6784704 9a\initrd. img root=UUID= a99686bf- c48a-464b- af3a-25f6784704 9a ro quiet splash pci=nocrs snd_hda_ intel.model= alc255- acer
=======
❱ cat /proc/cmdline
initrd=
- internal mic works
- external does not :(
I've noticed some RED messages in dmesg, though - the latest seem to be relevant:
[ 0.089089] x86/cpu: SGX disabled by BIOS. codec_realtek ehdaudio0D0: didn't find PCM for DAI Digital Codec DAI codec_realtek ehdaudio0D0: ASoC: error at snd_soc_dai_startup on Digital Codec DAI: -22 dai_startup( ) failed at Digital Playback and Capture (-22) dai_startup( ) failed (-22) codec_realtek ehdaudio0D0: didn't find PCM for DAI Digital Codec DAI codec_realtek ehdaudio0D0: ASoC: error at snd_soc_dai_startup on Digital Codec DAI: -22 dai_startup( ) failed at Digital Playback and Capture (-22) dai_startup( ) failed (-22)
[ 0.670858] pci 0000:00:07.0: DPC: RP PIO log size 0 is invalid
[ 0.672459] pci 0000:00:07.1: DPC: RP PIO log size 0 is invalid
[ 0.674048] pci 0000:00:07.2: DPC: RP PIO log size 0 is invalid
[ 0.675635] pci 0000:00:07.3: DPC: RP PIO log size 0 is invalid
[ 30.127898] snd_hda_
[ 30.127909] snd_hda_
[ 30.127915] Digital Playback and Capture: soc_pcm_open() failed (-22)
[ 30.127919] HDA Digital: ASoC: dpcm_be_
[ 30.127922] HDA Digital: dpcm_fe_
[ 30.128026] snd_hda_
[ 30.128030] snd_hda_
[ 30.128034] Digital Playback and Capture: soc_pcm_open() failed (-22)
[ 30.128036] HDA Digital: ASoC: dpcm_be_
[ 30.128039] HDA Digital: dpcm_fe_