GNOME Bugzilla – Bug 648717
Subwoofer turned off in pulseaudio when manually playing a track
Last modified: 2011-06-14 16:52:05 UTC
Created attachment 186698 [details] pulselog Background: I'm using a 7.1 surround sound system and Ubuntu 11.04, pulseaudio 0.9.22-24-g67d18 and banshee 2.0 nightly from the 23rd of April. Starting a track by double clicking or manually track skipping causes the bass channel to be muted in pulseaudio. Steps: 1) I start pulseaudio and banshee in debug mode as per instructions from dneilsen on IRC, the log files are attached. 2) I open Gnome's volume preferences and select the 7.1 surround sound option. And I make a note of the position in the logs: pulselog @ 683.533 bansheelog @ 00:25:44.107 3) I double click a track in Banshee and it plays The track sounds tinny, no sound is played back by my sub-woofer. pulselog: 802.828 --- see output 05 is now muted, this is my sub 802.836 --- stuff has finished happening bansheelog: 00:29:30.785 --- track is playing 3) While the track is playing, I adjust the volume preferences by changing the drop-down to 4.0 surround sound and back to 7.1 again, the bass returns and vibrates the entire room (which is nice). pulselog: 987.469 --- oh hallo there Mr. bass! bansheelog: no new log events 4) I then wait around until the end of the track, but because I'm slow and clumsy two track changes happen before I get round to noting the log positions. My sub-woofer is not muted, so pulselog: 1032.786 --- no reset and reams of text between automatic track changes bansheelog: 00:34:18.711 to 00:35:17.394 --- two track changes in here. 5) I then pause the track from the volume widget thingy at the top of the screen next to the time. pulselog: 1208.476 --- not much happening here banshee: 00:36:11.427 --- single event 6) Then click play again to resume the track. The sub-woofer is still working, I am happy :) pulselog: 1247.832 --- nothing exciting happening here banshee: 00:36:55.781 --- another single line 7) I then click the next track button because I didn't really like that track anyway. The next track is played without the sub-woofer, I am sad :( pulselog: 1296.693 --- that's where my bass went
Created attachment 186699 [details] bansheelog The "bansheelog" mentioned above
Adding Sjoerd Simons to cc for PulseAudio insight on the advice of Jo Shields.
I just tried in Rhythmbox and the same behaviour is seen when double clicking on a song, so more likely a pulseaudio or GStreamer issue?
It is not a Banshee issue at least. I will reassign this to GStreamer and they will determine if this is something they are causing, I would also encourage you to file a bug against PulseAudio in your distribution and linking this report.
Sounds more like a pulseaudio problem. Do you get the same behaviour if you use a different player that uses pulseaudio but not gstreamer?
Yes it did turn out to be a Pulseaudio bug, as it also happens to Flash videos in web pages. Haven't had time to re-test and submit to my distro yet