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From: GitHub issues - edited <github@alsa-project.org>
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Subject: microphone disappeared on alsa-ucm-conf 1.2.6.1
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Date: Thu,  9 Dec 2021 23:22:37 +0100 (CET)
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alsa-project/alsa-lib issue #200 was edited from galibozek:

after upgrade alsa-ucm-conf 1.2.5.1-1 to 1.2.6.1-1 (arch linux) my microphone disappeared on lenovo t14 gen2i

Similar to: https://bugs.archlinux.org/task/71180

```
00:1f.3 Audio device: Intel Corporation Tiger Lake-LP Smart Sound Technology Audio Controller (rev 20) (prog-if 80)
        Subsystem: Lenovo Device 22c9
        Flags: bus master, fast devsel, latency 64, IRQ 187, IOMMU group 12
        Memory at 603dbc0000 (64-bit, non-prefetchable) [size=16K]
        Memory at 603da00000 (64-bit, non-prefetchable) [size=1M]
        Capabilities: <access denied>
        Kernel driver in use: sof-audio-pci-intel-tgl
        Kernel modules: snd_hda_intel, snd_sof_pci_intel_tgl
```
```
kernel: input: sof-hda-dsp Mic as /devices/pci0000:00/0000:00:1f.3/skl_hda_dsp_generic/sound/card0/input9
kernel: input: sof-hda-dsp Headphone as /devices/pci0000:00/0000:00:1f.3/skl_hda_dsp_generic/sound/card0/input10
kernel: input: sof-hda-dsp HDMI/DP,pcm=3 as /devices/pci0000:00/0000:00:1f.3/skl_hda_dsp_generic/sound/card0/input11
kernel: input: sof-hda-dsp HDMI/DP,pcm=4 as /devices/pci0000:00/0000:00:1f.3/skl_hda_dsp_generic/sound/card0/input12
kernel: input: sof-hda-dsp HDMI/DP,pcm=5 as /devices/pci0000:00/0000:00:1f.3/skl_hda_dsp_generic/sound/card0/input13
systemd-udevd[513]: controlC0: Process '/usr/bin/alsactl restore 0' failed with exit code 99.
alsactl[1136]: alsa-lib main.c:1412:(snd_use_case_mgr_open) error: failed to import hw:0 use case configuration -2
alsactl[1136]: alsa-lib main.c:1412:(snd_use_case_mgr_open) error: failed to import hw:0 use case configuration -2
alsactl[1136]: Found hardware: "sof-hda-dsp" "Realtek ALC257" "HDA:80862812,80860101,00100000 HDA:10ec0257,17aa22c9,00100001 cfg-dmics:2" "" ""
alsactl[1136]: Hardware is initialized using a generic method
audit[1]: SERVICE_START pid=1 uid=0 auid=4294967295 ses=4294967295 msg='unit=alsa-restore comm="systemd" exe="/usr/lib/systemd/systemd" hostname=? addr=? terminal=? res=success'
plasmashell[1688]: org.kde.plasma.pulseaudio: No object for name "alsa_output.pci-0000_00_1f.3-platform-skl_hda_dsp_generic.stereo-fallback.monitor"
kernel: snd_hda_codec_realtek ehdaudio0D0: didn't find PCM for DAI Digital Codec DAI
kernel: snd_hda_codec_realtek ehdaudio0D0: ASoC: error at snd_soc_dai_startup on Digital Codec DAI: -22
kernel: snd_hda_codec_realtek ehdaudio0D0: didn't find PCM for DAI Digital Codec DAI
kernel: snd_hda_codec_realtek ehdaudio0D0: ASoC: error at snd_soc_dai_startup on Digital Codec DAI: -22
```

Issue URL     : https://github.com/alsa-project/alsa-lib/issues/200
Repository URL: https://github.com/alsa-project/alsa-lib