Public bug reported:

[Impact]
audio card disappeared after suspend device during audio playback Edit

[Fix]
Set trigger order for FE DAI links to SND_SOC_DPCM_TRIGGER_POST to trigger the 
BE DAI's before the FE DAI's. This prevents the xruns seen on playback 
pipelines using the link DMA.


[test]
With the patch, mantis n5 14 could be suspended successfully and 
ALSA device still presents after leave suspension.

[Regression Potential]
Low. If some DSPs need the reverse order(FE->BE), we may get the same error.

** Affects: linux-oem (Ubuntu)
     Importance: Undecided
         Status: New

** Affects: linux-oem (Ubuntu Bionic)
     Importance: Undecided
     Assignee: koba (kobako)
         Status: New

** Package changed: linux (Ubuntu) => linux-oem (Ubuntu)

** Also affects: linux-oem (Ubuntu Bionic)
   Importance: Undecided
       Status: New

** Changed in: linux-oem (Ubuntu Bionic)
     Assignee: (unassigned) => koba (kobako)

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https://bugs.launchpad.net/bugs/1882035

Title:
  audio card disappeared after suspend device during audio playback Edit

Status in linux-oem package in Ubuntu:
  New
Status in linux-oem source package in Bionic:
  New

Bug description:
  [Impact]
  audio card disappeared after suspend device during audio playback Edit

  [Fix]
  Set trigger order for FE DAI links to SND_SOC_DPCM_TRIGGER_POST to trigger 
the BE DAI's before the FE DAI's. This prevents the xruns seen on playback 
pipelines using the link DMA.

  
  [test]
  With the patch, mantis n5 14 could be suspended successfully and 
  ALSA device still presents after leave suspension.

  [Regression Potential]
  Low. If some DSPs need the reverse order(FE->BE), we may get the same error.

To manage notifications about this bug go to:
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