On Sat, 2010-07-10 at 08:05 +0000, Michael Rans wrote: > Even with these "hacks", I found that sometimes I see: > > I: module.c: Unloading "module-alsa-sink" (index: #4). > D: module-always-sink.c: Autoloading null-sink as no other sinks > detected. > > > After I see that, the sink disappears and cannot be selected any more > in sound properties. > > 1. Does the ac3-iec958 profile resolve any of these issues? What's "the ac3-iec958 profile"? The iec958-ac3-surround-* mappings that currently exist in pulseaudio use the a52 alsa plugin, which may or may not work with Colin's patch[1]. (It didn't work for Colin.) > 2. Jack has ac3jack. What would be the pros and cons of doing the AC3 > encoding in Pulseaudio instead of in Alsa? I think it would make sense to do AC3 encoding in Pulseaudio, although in theory I don't see what difference it would make. Maybe it's somehow benefical to handle all the buffering inside Pulseaudio. If there are timing related bugs in the a52 plugin, as Colin seems to think there are, then it's also a matter of who volunteers first: a person who knows how to fix the a52 plugin, or a person who knows how to hack AC3 encoding support into Pulseaudio. [1] https://tango.0pointer.de/pipermail/pulseaudio-discuss/2010-June/007311.html -- Tanu Kaskinen
