1297998 - Volume reset

Status: RESOLVED INCOMPLETE

(Core :: Audio/Video: cubeb, defect)

Description

[Mark Griffin]

User Agent: Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/51.0.2704.103 Safari/537.36

Steps to reproduce:

Playing audio on multiple sites (tested on Outlook OWA and http://www.w3schools.com/html/tryit.asp?filename=tryhtml5_audio_all )


Actual results:

System volume reset from roughly 8% to 70% - there's a reason it's so low...


Expected results:

System volume should not have been changed

Comment 1

[Anthony Jones (:ajones, :kentuckyfriedtakahe, :k17e)]

Are you using PulseAudio or ALSA?

Comment 2

[Matthew Gregan [:kinetik]]

Per Anthony's question, are you using PulseAudio or ALSA?  Details about the brand and version of your Linux may also be helpful.

I can't reproduce this locally.  On Fedora 24 with Pulseaudio 8.0, playing http://www.w3schools.com/html/tryit.asp?filename=tryhtml5_audio_all with various volumes set on the audio element alters the stream volume visible in the Sound->Applications UI but never touches the system-level "Output volume".

This sounds like the behaviour seen with flat-volumes enabled in the PulseAudio server (https://wiki.archlinux.org/index.php/PulseAudio/Troubleshooting#Clients_alter_master_output_volume_.28a.k.a._volume_jumps_to_100.25_after_running_application.29) but we try to avoid triggering that by querying the PA server for PA_SINK_FLAT_VOLUME and using our own volume adjustment when flat-volumes are enabled.

Comment 3

[Mark Griffin]

Sorry, crazy busy.

openSUSE 13.2 x64 KDE

Yast's Sound options says Pulseaudio is enabled.


$ zypper info pulseaudio
Repository: openSUSE-13.2-Update
Name: pulseaudio
Version: 5.0-4.21.1
Arch: x86_64
Vendor: openSUSE
Installed: Yes
[...snip...]

Comment 4

[Alex Chronopoulos [:achronop]]

I try to repro in a Fedora 24 as well but not possible. I flip the flat pref on pulse daemon but again not repro. Can you please capture some logs hopping to see something useful there? It would be better to capture the logs with the latest Nightly version of firefox. In order to do that download Nightly, export the following env var before run it, and run it.

export MOZ_LOG=cubeb:4
./path/to/nightly/firefox

Logs will appear on screen (stdout), please copy and paste them to a file and attach them here.