几天来，我的声卡再也无法检测到：声音参数窗口中只显示“虚拟输出”（根本没有输入）！我尝试了许多论坛解决方案，特别是我多次卸载并重新安装音频驱动程序；但这并没有改变任何东西…… :-(
但是，通过恢复模式启动时，音频工作正常。（使用 Windows 启动时音频工作正常）。所以我猜这是内核问题……尽管如此，尝试使用两个以前的（非恢复）内核版本中的任何一个启动也不起作用！（目前我的内核是 5.4.0-62-generic；因此两个以前的内核是 5.4.0-60-generic 和 5.4.0-58-generic）。
您对导致该问题的原因和解决方法有什么想法吗？如果您需要有关我的笔记本电脑配置的更多信息，请告诉我 :-)
编辑 -在正常模式下登录时，kern.log 读取（我在所有行中搜索“audio”、“sound”、“realtek”、“speaker”和“phone”）：
kernel: [ 0.178283] ACPI: Added _OSI(Linux-Lenovo-NV-HDMI-Audio)
kernel: [ 3.416730] snd_hda_intel 0000:00:1f.3: bound 0000:00:02.0 (ops i915_audio_component_bind_ops [i915])
kernel: [ 3.502366] snd_hda_codec_realtek hdaudioC0D0: autoconfig for ALC3246: line_outs=1 (0x14/0x0/0x0/0x0/0x0) type:speaker
kernel: [ 3.502369] snd_hda_codec_realtek hdaudioC0D0: speaker_outs=0 (0x0/0x0/0x0/0x0/0x0)
kernel: [ 3.502370] snd_hda_codec_realtek hdaudioC0D0: hp_outs=1 (0x21/0x0/0x0/0x0/0x0)
kernel: [ 3.502372] snd_hda_codec_realtek hdaudioC0D0: mono: mono_out=0x0
kernel: [ 3.502373] snd_hda_codec_realtek hdaudioC0D0: inputs:
kernel: [ 3.502374] snd_hda_codec_realtek hdaudioC0D0: Headset Mic=0x19
kernel: [ 3.502376] snd_hda_codec_realtek hdaudioC0D0: Headphone Mic=0x1a
kernel: [ 3.502377] snd_hda_codec_realtek hdaudioC0D0: Internal Mic=0x12
kernel: [ 3.557818] input: HDA Intel PCH Headphone Mic as /devices/pci0000:00/0000:00:1f.3/sound/card0/input12
kernel: [ 3.557858] input: HDA Intel PCH HDMI/DP,pcm=3 as /devices/pci0000:00/0000:00:1f.3/sound/card0/input13
kernel: [ 3.557893] input: HDA Intel PCH HDMI/DP,pcm=7 as /devices/pci0000:00/0000:00:1f.3/sound/card0/input14
kernel: [ 3.557925] input: HDA Intel PCH HDMI/DP,pcm=8 as /devices/pci0000:00/0000:00:1f.3/sound/card0/input15
kernel: [ 3.557995] input: HDA Intel PCH HDMI/DP,pcm=9 as /devices/pci0000:00/0000:00:1f.3/sound/card0/input16
kernel: [ 3.558075] input: HDA Intel PCH HDMI/DP,pcm=10 as /devices/pci0000:00/0000:00:1f.3/sound/card0/input17
在恢复模式启动时，它会读取以下内容。请注意，时间~64 秒很可能是我第一次尝试（成功）发出一些声音进行测试：
kernel: [ 0.176116] ACPI: Added _OSI(Linux-Lenovo-NV-HDMI-Audio)
kernel: [ 64.803641] snd_hda_intel 0000:00:1f.3: couldn't bind with audio component
kernel: [ 64.860025] snd_hda_codec_realtek hdaudioC0D0: autoconfig for ALC3246: line_outs=1 (0x14/0x0/0x0/0x0/0x0) type:speaker
kernel: [ 64.860027] snd_hda_codec_realtek hdaudioC0D0: speaker_outs=0 (0x0/0x0/0x0/0x0/0x0)
kernel: [ 64.860028] snd_hda_codec_realtek hdaudioC0D0: hp_outs=1 (0x21/0x0/0x0/0x0/0x0)
kernel: [ 64.860028] snd_hda_codec_realtek hdaudioC0D0: mono: mono_out=0x0
kernel: [ 64.860029] snd_hda_codec_realtek hdaudioC0D0: inputs:
kernel: [ 64.860030] snd_hda_codec_realtek hdaudioC0D0: Headset Mic=0x19
kernel: [ 64.860031] snd_hda_codec_realtek hdaudioC0D0: Headphone Mic=0x1a
kernel: [ 64.860032] snd_hda_codec_realtek hdaudioC0D0: Internal Mic=0x12
kernel: [ 64.909672] snd_hda_codec_hdmi hdaudioC0D2: No i915 binding for Intel HDMI/DP codec
kernel: [ 64.910739] hdaudio hdaudioC0D2: Unable to bind the codec
kernel: [ 64.911932] input: HDA Intel PCH Headphone Mic as /devices/pci0000:00/0000:00:1f.3/sound/card0/input11
因此，矛盾的是，当编解码器成功注定事情会变得糟糕……！