outdated
** Changed in: pulseaudio
Importance: Unknown => Undecided
** Changed in: pulseaudio
Remote watch: PulseAudio sound server #655 => None
** Changed in: pulseaudio
Status: New => Invalid
** Changed in: alsa-plugins
Importance: Unknown => Undecided
** Changed in:
Lucid is EOL.
** Changed in: alsa-plugins (Ubuntu)
Status: Confirmed => Invalid
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https://bugs.launchpad.net/bugs/348353
Title:
Pulseaudio fails with Alsa a52 (ac3) plugin
Status changed to 'Confirmed' because the bug affects multiple users.
** Changed in: alsa-plugins (Ubuntu)
Status: New = Confirmed
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Title:
Hi,
I will try again later. I've been busy moving house the last couple of
weeks so I haven't had the time.
thanks,
Danny
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Pulseaudio fails with Alsa a52 (ac3) plugin (Ubuntu 10.04 Lucid)
https://bugs.launchpad.net/bugs/348353
You received this bug notification because you are a member of
In trying to build from source, I had to patch debian/rules to pass
--enable-avcodec=yes to configure before it would notice that I'd
installed libavcodec-dev, I may have happened to do something else at
the same time, but I doubt it. At the very least its something to look
into to get it to
Strike that, I didn't catch that it was running configure twice, I'm not
sure just why, I was just using debian/rules binary, maybe there's
something strange about how its built, I apologize, I should have
checked more before commenting...wish there was an edit feature
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Pulseaudio fails with
Just one more thing as Columbo would say.
To make your PPA self contained, if you haven't already, you need to add
the A52 plugin itself, as unfortunately Lucid does not include it in the
Alsa plugins.
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Pulseaudio fails with Alsa a52 (ac3) plugin (Ubuntu 10.04 Lucid)
I have tried this.
Unfortunately the build system didnt create it.
I will have to upload the source package later with the full buil-
depends.
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Pulseaudio fails with Alsa a52 (ac3) plugin (Ubuntu 10.04 Lucid)
https://bugs.launchpad.net/bugs/348353
You received this bug notification because
I was mistaken. I confused sinks and profiles. With $CARD, withe A52
profile does appear in the Hardware tab in the Sound preferences, so a
suitable .asoundrc is:
pcm.a52 {
@args [CARD]
@args.CARD {
type string
}
type rate
slave {
pcm {
type a52
New versions of Pulseaudio will be patched, but in the meantime, here
are the revised steps for Ubuntu Lucid 10.04 LTS:
1. Open from Pulse source code: src/modules/alsa/alsa-sink.c
2. Replace: pa_sink_set_max_rewind(u-sink, u-hwbuf_size); with:
if (pa_alsa_pcm_is_hw(u-pcm_handle)) {
I have managed to incorporate the alsa config into my pulseaudio file now.
Adding the config to /usr/share/alsa/a52.conf and adding a hook into the
pulse.conf within the same directory works perfectly.
My PPA now contains the packages and configs require to get this working
from scratch.
So to
That's excellent. It will make it easy for everyone to get this working.
I suggest you contribute your a52.conf with amended pulse.conf to the
appropriate developers (Alsa?) for inclusion in future releases. All the
Pulseaudio fixes I've previously mentioned will be in a future
Pulseaudio
pcm.a52 {
@args [CARD]
@args.CARD {
type string
}
type rate
slave {
pcm {
type a52
bitrate 448
channels 6
card $CARD
}
rate 48000 #required somehow, otherwise nothing happens in PulseAudio
}
}
I tried the
Just removing the card line works.
It binds to the first SPDIF it finds I think which will usually be the correct
one.
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Pulseaudio fails with Alsa a52 (ac3) plugin (Ubuntu 10.04 Lucid)
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Thanks. I will try that later.
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Pulseaudio fails with Alsa a52 (ac3) plugin (Ubuntu 10.04 Lucid)
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Perfect. The extra in thread rewind fixed it for me.
I now have a fully working a52 through pulseaudio.
I have updated my PPA and the new patch is attached.
** Patch added: Working version of the patch
http://launchpadlibrarian.net/51859149/0098-fix-a52-surround.patch
** Patch removed: Patch
Good news!
pl bossart also came up with a great way to avoid editing
/usr/local/share/pulseaudio/alsa-mixer/profile-sets/default.conf
# Rate Converter to 48kHz, needed for some applications
pcm.a52 {
@args.0 {
type integer
}
type rate
slave {
pcm Filter_A52Encode
coling suggested:
You shouldn't need to specify either card NVidia or card 0. Just use the
argument passed in and pass it through to the slave. It's just about cooking up
the right .asoundrc syntax. Something like (untested):
{{{
pcm.Filter_A52Encode {
@args [ CARD ]
@args.CARD {
Finally I got it all working including a52 Pulseaudio profiles!
These are the steps on Ubuntu Lucid 10.04 LTS:
1. Open from Pulse source code: src/modules/alsa/alsa-sink.c
2. Replace: pa_sink_set_max_rewind(u-sink, u-hwbuf_size); with:
if(strcmp(u-device_name, a52) == 0) {
Thanks and nice work, I will have to test this when I get home.
For now I have created a debian patch against the latest pulseaudio
build in Ubuntu which can be put into the debian/patches (and added to
the debian/patches/series file) folder to enable building the .deb
package using dpkg (and
Thanks for making the PPA. It should make it a lot easier for users.
I just had a quick look at your patch and I think there's a couple of problems.
pa_sink_set_max_request(u-sink, u-hwbuf_size);
pa_sink_set_max_rewind(u-sink, u-hwbuf_size); --- this one should be
deleted
+if
Oh yeah, forgot to delete that line.
I have made the changes you have suggested, in the ppa and in this patch.
The .asoundrc will need user input anyway for the card name, but the
configuration will be reduced to only editing that line now.
A native pulseaudio ac3 would be the best but if this
That's great. Let me know if it works for you.
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Pulseaudio fails with Alsa a52 (ac3) plugin (Ubuntu 10.04 Lucid)
https://bugs.launchpad.net/bugs/348353
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** Tags added: patch
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Pulseaudio fails with Alsa a52 (ac3) plugin (Ubuntu 10.04 Lucid)
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Well unfortunatly it appears to not work for me.
Pulseaudio detects the card and profiles correctly but when it comes to playing
it dies.
Here is my verbose output:
I: alsa-sink.c: Trying resume...
D: alsa-util.c: Maximum hw buffer size is 21824 ms
D: alsa-util.c: Set buffer size first (to 4608
Forgot to say that any audio app causes this crash and the device just
disappears then I have to restart pulseaudio.
I can get sound out just fine using the speaker-test to the alsa device
only.
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Pulseaudio fails with Alsa a52 (ac3) plugin (Ubuntu 10.04 Lucid)
My .asoundrc
** Attachment added: .asoundrc
http://launchpadlibrarian.net/51800014/.asoundrc
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Pulseaudio fails with Alsa a52 (ac3) plugin (Ubuntu 10.04 Lucid)
https://bugs.launchpad.net/bugs/348353
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Bugs, which is
Actually just to rule things out I just reduced my.asoundrc to only:
# Encode AC3 - Directly on hardware
pcm.Filter_A52Encode {
type a52
bitrate 448
channels 6
card NVidia
}
# Rate Converter to 48kHz, needed for some applications
pcm.a52 {
type rate
slave {
pcm
Here's my alsa-sink.c - I'm pretty sure I didn't miss anything though.
** Attachment added: alsa-sink.c
http://launchpadlibrarian.net/51800300/alsa-sink.c
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Pulseaudio fails with Alsa a52 (ac3) plugin (Ubuntu 10.04 Lucid)
https://bugs.launchpad.net/bugs/348353
You received this bug
I saw process_rewind errors like that when the rates didn't match
between Alsa and Pulseaudio - is everywhere using 48000?
Is Pulse definitely connecting to the rate converter and not directly to
the A52 filter?
Is Pulse itself definitely using 48000?
Failing that, you can try copying Pulse's
See: http://pulseaudio.org/ticket/839#comment:3
** Bug watch added: PulseAudio sound server #839
http://pulseaudio.org/ticket/839
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Pulseaudio fails with Alsa a52 (ac3) plugin (Ubuntu 10.04 Lucid)
https://bugs.launchpad.net/bugs/348353
You received this bug notification because you are a
pl bossart in Pulseaudio email list discussion said:
NAK. This does not work for me. You need to rewind also in the thread context:
diff --git a/src/modules/alsa/alsa-sink.c b/src/modules/alsa/alsa-sink.c
index 2995c3c..4059a9b 100644
--- a/src/modules/alsa/alsa-sink.c
+++
Also here's my output if it helps with your debugging.
** Attachment added: pulseaudiooutput.txt
http://launchpadlibrarian.net/51802858/pulseaudiooutput.txt
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Pulseaudio fails with Alsa a52 (ac3) plugin (Ubuntu 10.04 Lucid)
https://bugs.launchpad.net/bugs/348353
You received this bug
This asoundrc is too card specific. You should not be referring to
nvidia in your asoundrc, because everyone using a52/SPDIF hardware has
different chipsets. You probably need to use the various
variables/macros available for specifying the card identifier.
Luke
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Pulseaudio fails with Alsa
I forced Pulseaudio not to rewind using:
pa_sink_set_max_rewind(u-sink, 0);
This seemed to fix it.
timeout=0 is no longer needed in default.pa: default.pa: load-module
module-suspend-on-idle # timeout=0
However, there is still a need for a rate converter in asoundrc: # Rate
Converter to
I added to default.pa:
load-module module-suspend-on-idle timeout=0
and it seemed to prevent the unloading with Rhythmbox.
When I load Oolite that uses libsdl then the unloading still seems to
occur (so Oolite produces no sound).
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Pulseaudio fails with Alsa a52 (ac3) plugin (Ubuntu 10.04
** Changed in: alsa-plugins
Status: Unknown = New
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Pulseaudio fails with Alsa a52 (ac3) plugin (Ubuntu 10.04 Lucid)
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I have found something that works for a while.
I add to .asoundrc:
# Rate Converter to 48kHz, needed for Pulseaudio it seems
pcm.Filter_RateConvert {
type rate slave {
pcm Filter_A52Encode rate 48000
}
}
and in default.pa: load-module module-alsa-sink
device=Filter_RateConvert
** Changed in: pulseaudio
Status: Unknown = New
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Pulseaudio fails with Alsa a52 (ac3) plugin (Ubuntu 10.04 Lucid)
https://bugs.launchpad.net/bugs/348353
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I tried using the ppa here:
https://launchpad.net/~ricotz/+archive/unstable
This upgraded Alsa to 1.0.23, Pulseaudio to 1:0.9.22 and kernel to
2.6.35-6.7.
The problem is still the same with these newer versions.
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Pulseaudio fails with Alsa a52 (ac3) plugin (Ubuntu 10.04 Lucid)
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