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From: Colin Guthrie <gmane@colin.guthr.ie>
To: alsa-devel@alsa-project.org
Subject: Re: Which project to choose?
Date: Mon, 19 Jul 2010 08:53:51 +0100	[thread overview]
Message-ID: <i210af$6gi$1@dough.gmane.org> (raw)
In-Reply-To: <AANLkTilHj1RR50u0kN7cedIuV72qxqvTX1YDriT6ajqi@mail.gmail.com>

'Twas brillig, and Raymond Yau at 19/07/10 07:35 did gyre and gimble:
> 2010/7/19 Chris <cpollock@embarqmail.com>
> 
>> On Mon, 2010-07-19 at 09:44 +0800, Raymond Yau wrote:
>>
>>>>
>>> Refer to https://qa.mandriva.com/show_bug.cgi?id=56473#c10
>>>
>>> I have installed mandriva 2010 on virtual box
>>>
>>> when using xmms and libao output plugin to play system sound startup3.wav
>>>
>>> xmms hang at the end of the playback only when enable buffering in libao
>>> output plugin.(configure output plugin in xmms, unfortunately default is
>>> enable buffering buffer size 3000 chunk size 1000)  ,
>>>
>>> xmms does not hang when you disable the buffer or using liboss/libALSA
>>> output plugin
>>>
>>> The last message in the pulseaudio server is
>>> D: protocol-native.c  'underrun on libao[xmms] playback stream' , 0 bytes
>> in
>>> queue.
>>>
>>> The sound card seem running since hw_ptr and appl_ptr are increasing when
>>> cat /proc/asound/card0/pcm0p/sub0/status
>>>
>>> After a while , the following message appear
>>>
>>> E:alsa-sink.c : ALSA woke us up to write new data , but there was
>> actually
>>> nothing to write!
>> The above is exactly what I see periodically Raymond, so, what, if any,
>> is the fix?
>>
>> Chris
>>
>>
> Do you mean that you cannot reproduce the xmms hang bug on your ens1371 or
> via8237 ?
> 
> xmms always hang/freeze at 4 second as xmms display the total length of
> startup3.wav is 5 seconds
>
> you have to ask mandriva 's maintainer why enable buffering is the default
> option since xmms did not hang when I disable buffering in libao plugin
> 
> For fefora 10 and 13 , they only provide liboss, libALSA and libpulse plugin
> for xmms
> I have no idea about the chunk size in libao plugin


With a clean user account, I could not reproduce either problem with the
default settings.

FWIW, running PA under virtualbox is quite different to running it under
a real system. For example PA will enable the non-timer based mode
automatically when under a virtual machine.

Col


-- 

Colin Guthrie
gmane(at)colin.guthr.ie
http://colin.guthr.ie/

Day Job:
  Tribalogic Limited [http://www.tribalogic.net/]
Open Source:
  Mandriva Linux Contributor [http://www.mandriva.com/]
  PulseAudio Hacker [http://www.pulseaudio.org/]
  Trac Hacker [http://trac.edgewall.org/]

  reply	other threads:[~2010-07-19  7:54 UTC|newest]

Thread overview: 50+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2010-07-13 23:02 Which project to choose? Chris
2010-07-13 23:26 ` Raymond Yau
2010-07-14  0:01   ` Chris
2010-07-14  1:20     ` Raymond Yau
2010-07-14  1:31       ` Chris
     [not found]         ` <AANLkTimNSRELBq7i1Ypi9K2tmFu9NKLvQAOOqPwuU13x@mail.gmail.com>
     [not found]           ` <1279074303.29042.3.camel@localhost.localdomain>
2010-07-14 12:23             ` Raymond Yau
2010-07-14 22:15               ` Chris
2010-07-15  0:08                 ` Raymond Yau
2010-07-15  1:38                   ` Chris
2010-07-15 12:58                     ` Colin Guthrie
2010-07-15 14:07                       ` Jaroslav Kysela
2010-07-15 22:54                         ` Chris
2010-07-15 23:15                           ` Raymond Yau
2010-07-16  0:24                             ` Chris
2010-07-16  5:32                               ` Jaroslav Kysela
2010-07-16  1:19                             ` Chris
2010-07-16  5:40                           ` Jaroslav Kysela
2010-07-17  0:22                             ` Raymond Yau
2010-07-15 22:02                       ` Raymond Yau
2010-07-19  1:44                       ` Raymond Yau
2010-07-19  2:56                         ` Chris
2010-07-19  6:35                           ` Raymond Yau
2010-07-19  7:53                             ` Colin Guthrie [this message]
2010-07-19 22:52                               ` Chris
2010-07-20  1:23                                 ` Raymond Yau
2010-07-20  2:13                                   ` Chris
2010-07-20 11:41                                     ` Raymond Yau
2010-07-20 22:19                                       ` Chris
2010-07-21  8:17                                         ` Raymond Yau
2010-07-21 22:57                                           ` Chris
2010-07-22  0:33                                             ` Raymond Yau
2010-07-22  1:07                                               ` Chris
     [not found]                                                 ` <AANLkTim7iY_w96CPkVIlyB7Z9NGWUIvX2wKwvgu4wdjn@mail.gmail.com>
     [not found]                                                   ` <1279766127.7841.11.camel@localhost.localdomain>
     [not found]                                                     ` <AANLkTim_FkOXlYihEQikJ8Vpo5zXreCdqQnDW3acsrAu@mail.gmail.com>
     [not found]                                                       ` <1279797682.7841.15.camel@localhost.localdomain>
2010-07-22 11:42                                                         ` Raymond Yau
2010-07-20 22:49                                       ` Chris
2010-07-24  3:51                       ` Raymond Yau
2010-07-25 14:14                         ` Colin Guthrie
2010-07-26  5:53                           ` Raymond Yau
2010-07-26  8:09                             ` Raymond Yau
2010-07-15 13:08                     ` Raymond Yau
2010-07-14 22:32     ` Raymond Yau
2010-07-14 22:58       ` Chris
2010-07-14 11:13 ` Raymond Yau
2010-07-14 15:06   ` David Henningsson
2010-07-14 15:25     ` Jaroslav Kysela
2010-07-14 19:45       ` David Henningsson
2010-07-14 22:13         ` Jaroslav Kysela
2010-07-16  0:39           ` Raymond Yau
2010-07-16  1:30           ` Raymond Yau
2010-07-15  0:52     ` Raymond Yau
2010-07-23 11:51     ` Raymond Yau

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