[SRU] Linux,Ubuntu,18.4,CI,OLP15,PRTS, Audio/video is out of sync/lag when enter Suspend during playback

[Hui Wang]

[Impact]
Users reported the audio and video is out of sync when entering suspend during playback on bionic.

[Fix]
The mainline pulseaudio already has the fix for this issue, and the fix is already in the eoan, focal and groovy, but it is not in the bionic.

[Test Case]
open a online video on the firefox, while it is playing, suspend the system, wait for 30 seconds, resume the system, the audio and video is still on the sync.

[Potential Regression Risk]
Low, these 2 patches are already in the mainline pulseaudio, and already in the eoan, focal and groovy.

Most of the change is in the suspend/unsuspend on alsa sink/source, the potential regression risk is the playback/recording stops working after
machine suspend and resume or playback/recording has an obvious discontinuity before suspend and after resume. I have done the test on a Lenovo and a Dell machine, the playback/recording worked well after resuming.

[Hui Wang (hui.wang)]

This is the debdiff for bionic.

Since the patches are already in the mainline, eoan and focal already have the patches, no need to send debdiff for eoan and focal.

[Sebastien Bacher (seb128)]

@Hui, thanks for the work, do you want that bionic update uploaded now or should we try to include other pending fixes still there?

[Hui Wang (hui.wang)]

@Seb,

No other pending fixes so far, please upload now.

thx.

[Sebastien Bacher (seb128)]

the changes are uploaded to the bionic SRU queue

[Łukasz Zemczak (sil2100)]

Hello Hui, or anyone else affected,

Accepted pulseaudio into bionic-proposed. The package will build now and be available at https://launchpad.net/ubuntu/+source/pulseaudio/1:11.1-1ubuntu7.9 in a few hours, and then in the -proposed repository.

Please help us by testing this new package. See https://wiki.ubuntu.com/Testing/EnableProposed for documentation on how to enable and use -proposed. Your feedback will aid us getting this update out to other Ubuntu users.

If this package fixes the bug for you, please add a comment to this bug, mentioning the version of the package you tested, what testing has been performed on the package and change the tag from verification-needed-bionic to verification-done-bionic. If it does not fix the bug for you, please add a comment stating that, and change the tag to verification-failed-bionic. In either case, without details of your testing we will not be able to proceed.

Further information regarding the verification process can be found at https://wiki.ubuntu.com/QATeam/PerformingSRUVerification . Thank you in advance for helping!

N.B. The updated package will be released to -updates after the bug(s) fixed by this package have been verified and the package has been in -proposed for a minimum of 7 days.

[Łukasz Zemczak (sil2100)]

Thank you for the SRU! I will accept it as I see it was waiting in the queue long enough already, but I would appreciate a bit more investigation regarding the regression potential. Could you please update the [Regression Potential] field with information regarding in which places potential regressions could be seen after users upgrade to this package version? The introduced patches are quite big, touching a lot of code, so I'd like someone look at the changes and try to identify possible unrelated use-cases that can be broken by those changes.

[Hui Wang (hui.wang)]

Install the 18.04 on a Lenovo and a Dell machine, run apt-get dist-upgrade.

Open Software & Update, enable bionic-proposed

sudo apt-get update
sudo apt install pulseaudio
check the puleaudio is 1:11.1-1ubuntu7.9

Open the browser and play a online video from sohu.com, suspend the machine, wait for 20s, resume the machine, the sound and video is still in sync.

[Hui Wang (hui.wang)]

And updated the [Potential Regression Risk].

thx.

[Launchpad Janitor (janitor)]

This bug was fixed in the package pulseaudio - 1:11.1-1ubuntu7.9

---------------
pulseaudio (1:11.1-1ubuntu7.9) bionic; urgency=medium

  [Kai-Chuan Hsieh]
  * alsa-mixer: Correct ucm card name (LP: #1881094)

  [Hui Wang]
  * d/p/0901-alsa-solaris-oss-remove-unnecessary-error-handling-w.patch
  * d/p/0902-alsa-Improve-resume-logic-after-alsa-suspend.patch
  * (LP: #1882042)

 -- Kai-Chuan Hsieh <email address hidden> Wed, 27 May 2020 16:42:50 +0800

[Brian Murray (brian-murray)]

The verification of the Stable Release Update for pulseaudio has completed successfully and the package is now being released to -updates. Subsequently, the Ubuntu Stable Release Updates Team is being unsubscribed and will not receive messages about this bug report. In the event that you encounter a regression using the package from -updates please report a new bug using ubuntu-bug and tag the bug report regression-update so we can easily find any regressions.