Ubuntu
linux package

  1. Bug #1860697
  2. Comment #3

Comment 3 for bug 1860697

Revision history for this message
Hui Wang (hui.wang) wrote : Re: Sound doesn't work on Lenovo X1 Carbon with 20.04

With the 5.4 kernel, the sound driver could detect audio dsp and dmic runtime, on this mahcine, the driver found them, then it abort the legacy hda driver:
[ 13.711820] snd_hda_intel 0000:00:1f.3: Digital mics found on Skylake+ platform, aborting probe

Then the sound driver load the sof driver, but it finally failed to find the tplg file for this machine:
[ 14.056300] sof-audio-pci 0000:00:1f.3: Direct firmware load for intel/sof-tplg/sof-hda-generic-4ch.tplg failed with error -2
[ 14.056303] sof-audio-pci 0000:00:1f.3: error: tplg request firmware intel/sof-tplg/sof-hda-generic-4ch.tplg failed err: -2

For sof firmware and tplg, Intel has not released sof-hda-generic-4ch.tplg to us, then we didn't integrate it to ubuntu yet.

So for using the legacy hda driver forcibly, please add the module parameter dmic_detect=0 to the snd-hda-intel.