Comment 13 for bug 2027848

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brett hassall (brett-hassall) wrote :

Using Ubuntu 6.5.0-2.2 kernel as it is most likely to write the journal after a lockup, I turned on some audio debug and saw this:

cold boot (all entries below have the same timestamp)
  jammy kernel: snd_sof_intel_hda:hda_codec_probe: sof-audio-pci-intel-tgl 0000:00:1f.3: HDA codec #0 probed OK: response: 10ec0236
  jammy kernel: snd_sof_intel_hda:request_codec_module: hdaudio ehdaudio0D0: loading codec module: hdaudio:v10EC0236r00100002a01
  jammy kernel: snd_sof_intel_hda:hda_codec_probe: sof-audio-pci-intel-tgl 0000:00:1f.3: HDA codec #2 probed OK: response: 80862812
  jammy kernel: snd_sof_intel_hda:request_codec_module: hdaudio ehdaudio0D2: loading codec module: hdaudio:v80862812r00100000a01

warm boot
  jammy kernel: snd_sof_intel_hda:hda_codec_probe: sof-audio-pci-intel-tgl 0000:00:1f.3: HDA codec #0 probed OK: response: fe05
  <then nothing for 26 sec until>
  jammy kernel: watchdog: BUG: soft lockup - CPU#2 stuck for 26s! [kworker/2:1:92]

So it seems the HDA codec probe should return a PCI ID and for some reason after a warm boot it does not.