** Changed in: pulseaudio (Ubuntu)
Assignee: (unassigned) => Luke Yelavich (themuso)
** Also affects: pulseaudio (Ubuntu Xenial)
Importance: Undecided
Status: New
** Changed in: pulseaudio (Ubuntu Xenial)
Status: New => In Progress
** Changed in: pulseaudio (Ubuntu Xenial)
Assignee: (unassigned) => Luke Yelavich (themuso)
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Matching subscriptions: Ubuntu 16.04 Bugs
https://bugs.launchpad.net/bugs/1641954
Title:
Output switches from HDMI speakers to internal speakers on DPMS off
Status in pulseaudio package in Ubuntu:
New
Status in pulseaudio source package in Xenial:
In Progress
Bug description:
PulseAudio 8.0 includes a well-known user-experience regression: Its
new auto-routing algorithm tries to switch to another output, as soon
as the active output gets disconnected. This leads to the following
bad user experience:
(1) Alice listens to music on her speakers, which are connected to the
screen, which is connected through HDMI to the computer.
(2) Alice leaves the computer, the screen gets suspended (DPMS off).
(3) PulseAudio sees that the HDMI output got disconnected (although
only for a short interval) and switches to internal speaker.
(4) Alice returns to the computer but finds that the music is now
playing through the internal speakers.
(5) Alice can switch the output to the HDMI speakers manually, but the
above user experience bug will reoccur when she leaves the computer
again.
This is a well-known upstream bug that was fixed in PulseAudio 9.0.
Due to the fact that Ubuntu 16.04.1 LTS uses PulseAudio 8.0, it is
desirable to backport this fix to PulseAudio 8.0, so that all LTS
users have better experience. Upstream said they would not do this and
that I should report this to Ubuntu directly.
Other information:
* Upstream bug: https://bugs.freedesktop.org/show_bug.cgi?id=93946
* Fix 1:
https://cgit.freedesktop.org/pulseaudio/pulseaudio/commit/?id=04040c522f5f62dda50ac927e92453381d419f09
* Fix 2:
https://github.com/pulseaudio/pulseaudio/commit/23c15c3b52a958887c1f8cad3c94879a8770ef0e
To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/pulseaudio/+bug/1641954/+subscriptions
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