[pulseaudio-discuss] PulseAudio and OpenAL games: AL lib: pulseaudio.c:331: PulseAudio returned minreq > tlength/2; expect break up

[Martin Steigerwald]

HI Raymond,

Am Donnerstag, 18. September 2014, 10:14:17 schrieb Raymond Yau:
> > > > Any solution for this?
> > > > 
> > > > When playing PlaneShift through Pulseaudio while PlaneShift is setup
> 
> to
> 
> > > > use
> > > > OpenAL as sound renderer  I get:
> > > > 
> > > > AL lib: pulseaudio.c:331: PulseAudio returned minreq > tlength/2;
> 
> expect
> 
> > > > break up
> > > > 
> > > > and well badly stuttering sound.
> > > 
> > > I'm not very familiar with OpenAL, and a quick look through the source
> > > (in Ubuntu 14.04) did not show any such warning message.
> > > 
> > > So I'm not sure what that warning means, and if the error is in OpenAL
> > > or in PulseAudio.
> > > 
> > > In theory, any application should be able deal with big minreqs and
> > > tlengths. In practice I know we've had issues with tlengths increasing
> > > gradually in the past, and I'm not sure all those issues have been root
> > > caused.
> > 
> > Thanks for looking into this.
> > 
> > I tried PlaneShift without PulseAudio but with setting:
> > 
> > device = default:CARD=Pebbles
> > 
> > into /etc/openal/alsoft.conf
> 
> This mean you have customized pcm.default or still using old version of
> alsa lib
> 
> http://git.alsa-project.org/?p=alsa-lib.git;a=commitdiff;h=e6f990e5c9be5cac6
> f36924d20a75d0f69d27297;hp=e2c2262403c5639c7ff96f47a43682ff16b7ae4f

But thats just related to default audio device, not to the issue at hand or is 
it?

I reported it today – together with hints on where to obtain open source 
client and how to reproduce:

Bug 85445 - PlaneShift with OpenAL sound stutters: PulseAudio returned minreq 
> tlength/2; expect break up
https://bugs.freedesktop.org/85445

I think I will look into that ALSA default issue as well. But would really be 
nice if I can switch to PulseAudio finally. Only issue left at the moment is 
PlaneShift sound output.

Ciao,
-- 
Martin 'Helios' Steigerwald - http://www.Lichtvoll.de
GPG: 03B0 0D6C 0040 0710 4AFA  B82F 991B EAAC A599 84C7