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 <kaichuan.hs...@canonical.com> Wed, 27 May 2020
16:42:50 +0800
** Changed in: pulseaudio (Ubuntu Bionic)
Status: Fix Committed => Fix Released
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https://bugs.launchpad.net/bugs/1882042
Title:
[SRU] Linux,Ubuntu,18.4,CI,OLP15,PRTS, Audio/video is out of sync/lag
when enter Suspend during playback
Status in HWE Next:
New
Status in pulseaudio package in Ubuntu:
Fix Released
Status in pulseaudio source package in Bionic:
Fix Released
Bug description:
[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.
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