** Changed in: oem-priority
       Status: New => In Progress

You received this bug notification because you are a member of Ubuntu
Touch seeded packages, which is subscribed to pulseaudio in Ubuntu.

  [SRU]There is no available audio entry in sound settings after execute
  suspend in 'Performance mode'

Status in HWE Next:
Status in OEM Priority Project:
  In Progress
Status in pulseaudio package in Ubuntu:
  Fix Committed
Status in pulseaudio source package in Bionic:
Status in pulseaudio source package in Eoan:
  Won't Fix
Status in pulseaudio source package in Focal:
  Fix Committed
Status in pulseaudio source package in Groovy:
  Fix Committed

Bug description:
  On some I+N machines (inlcuding lenovo and dell machines), after
  setting the graphic mode to perofermance mode, and open the gnome
  sound seting, run suspend/resume test, the audio devices will
  disappear from UI, instead a dummy audio shows on the UI, and from
  then on, the audio can't work anymore.

  The root cause is after resuming, the pulseaudio try to recover the
  PCM device, but at that moment, the devices nodes at /dev/snd/ are
  not accessible yet sometimes, it will make snd_pcm_open fail and
  the pulseaudio will calll unload_module to unload alsa audio card.
  I cherrpicked a fix from upstream, the fix adds retry and pa_msleep(),
  this will retry the snd_pcm_open() a couple of times if it fails.

  [Test Case]
  Install the pulseaudio wit this fix, set the graphic mode to
  performance mode, open the sound setting, then run suspend/resume 90
  times, after test check the audio devices on the UI, the speaker,
  digital mic are still on the UI, and they could work well.

  [Regression Risk]
  Low, this SRU just add retry and pa_msleep(), if the snd_pcm_open()
  doesn't fail, this patch will not introduce any change, if snd_pcm_open()
  fails, it just retry a couple of times, so it will not introduce the
  regression in theory.

To manage notifications about this bug go to:

Mailing list: https://launchpad.net/~touch-packages
Post to     : touch-packages@lists.launchpad.net
Unsubscribe : https://launchpad.net/~touch-packages
More help   : https://help.launchpad.net/ListHelp

Reply via email to