Audio refuses service

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Audio refuses service

by Rudolf O. Durrer :: Rate this Message:

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The setting:
an older Titanium Powerbook, just for Skype and Radio Shark (in-and  
output by USB), OS 10.5.8 and all newest software updates.
Accessed by screen sharing.

The problem
This worked fine since years, until yesterday: suddenly, while  
listening to the news: no sound anymore.
I checked other audio software and all necessary prefs, no sound.
Restarting, everything worked again for about 5 minutes, then: no  
sound anymore.
Waiting (without restarting) about 10 minutes, sound came back, but  
again, only for a short time.

Wiped out the HD completely, set up a new OS 10.5.8: the same problem  
still persists.

Question:
Is there a software to check the audio device of the computer?

Thanks for help
Rudolf
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Re: Audio refuses service

by Macs R We :: Rate this Message:

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On Oct 21, 2009, at 2:08 PM, Rudolf O. Durrer wrote:

> This worked fine since years, until yesterday: suddenly, while  
> listening to the news: no sound anymore.
> I checked other audio software and all necessary prefs, no sound.
> Restarting, everything worked again for about 5 minutes, then: no  
> sound anymore.
> Waiting (without restarting) about 10 minutes, sound came back, but  
> again, only for a short time.
>
> Wiped out the HD completely, set up a new OS 10.5.8: the same  
> problem still persists.
>
> Question:
> Is there a software to check the audio device of the computer?

If any software does this, it would be the Apple Hardware Test on the  
original boot disk for this model.  Depending on the vintage of the  
Mac, you either hold down the D key while booting from the CD/DVD, or  
you hold down Option and then choose the AHT partition.
--
   Macs R We -- Personal Macintosh Service and Support
     in the Wickenburg and far Northwest Valley Areas.
                             http://macsrwe.com

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Parent Message unknown Re: Audio refuses service

by Rudolf O. Durrer :: Rate this Message:

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Am 22.10.2009 um 04.17 schrieb Macs R We:

>
> On Oct 21, 2009, at 6:58 PM, Rudolf O. Durrer wrote:
>
>> Am 22.10.2009 um 01.25 schrieb Macs R We:
>>
>>>
>>> On Oct 21, 2009, at 2:08 PM, Rudolf O. Durrer wrote:
>>>
>>>> This worked fine since years, until yesterday: suddenly, while  
>>>> listening to the news: no sound anymore.
>>>> I checked other audio software and all necessary prefs, no sound.
>>>> Restarting, everything worked again for about 5 minutes, then: no  
>>>> sound anymore.
>>>> Waiting (without restarting) about 10 minutes, sound came back,  
>>>> but again, only for a short time.
>>>>
>>>> Wiped out the HD completely, set up a new OS 10.5.8: the same  
>>>> problem still persists.
>>>>
>>>> Question:
>>>> Is there a software to check the audio device of the computer?
>>>
>>> If any software does this, it would be the Apple Hardware Test on  
>>> the original boot disk for this model.  Depending on the vintage  
>>> of the Mac, you either hold down the D key while booting from the  
>>> CD/DVD, or you hold down Option and then choose the AHT partition.
>>
>>
>> Well, the machine survived, but that's unfortunately not true for  
>> the original disks..(sigh)
>
> Apple techs have "master" AHT disks good for every model.  If you  
> lived near me, I'd say come on over, but otherwise, a Genius Bar  
> will have them.

Thanks for the offer, but Switzerland is too far away for that...:-)

The thing is, that it's probably not exactely the hardware which is  
the culprit, but somehow of a piece of the audio software.
As I have stated: suddenly, the sound comes back again, without that  
any external interference had happened to the computer.
I checked it also with "AU Lab.app" from developer tools. This one  
gave me a small hint by displaying each time, the sound stopped, a  
line stating "audio overload".
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Re: Audio refuses service

by Giovanni Lanzani :: Rate this Message:

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"Rudolf O. Durrer" <r.o.durrer@...>
writes:

> Am 22.10.2009 um 04.17 schrieb Macs R We:
>
>>
>> On Oct 21, 2009, at 6:58 PM, Rudolf O. Durrer wrote:
>>
>>> Am 22.10.2009 um 01.25 schrieb Macs R We:
>>>
>>>>
>>>> On Oct 21, 2009, at 2:08 PM, Rudolf O. Durrer wrote:
>>>>
>>>>> This worked fine since years, until yesterday:
>>>>> suddenly, while  listening to the news: no sound
>>>>> anymore.
>>>>> I checked other audio software and all necessary prefs, no sound.
>>>>> Restarting, everything worked again for about 5
>>>>> minutes, then: no  sound anymore.
>>>>> Waiting (without restarting) about 10 minutes, sound
>>>>> came back,  but again, only for a short time.
>>>>>
>>>>> Wiped out the HD completely, set up a new OS 10.5.8:
>>>>> the same  problem still persists.
>>>>>
>>>>> Question:
>>>>> Is there a software to check the audio device of the computer?
>>>>
>>>> If any software does this, it would be the Apple
>>>> Hardware Test on  the original boot disk for this model.
>>>> Depending on the vintage  of the Mac, you either hold
>>>> down the D key while booting from the  CD/DVD, or you
>>>> hold down Option and then choose the AHT partition.
>>>
>>>
>>> Well, the machine survived, but that's unfortunately not
>>> true for  the original disks..(sigh)
>>
>> Apple techs have "master" AHT disks good for every model.
>> If you  lived near me, I'd say come on over, but
>> otherwise, a Genius Bar  will have them.
>
> Thanks for the offer, but Switzerland is too far away for that...:-)
>
> The thing is, that it's probably not exactely the hardware
> which is  the culprit, but somehow of a piece of the audio
> software.
> As I have stated: suddenly, the sound comes back again,
> without that  any external interference had happened to the
> computer.
> I checked it also with "AU Lab.app" from developer
> tools. This one  gave me a small hint by displaying each
> time, the sound stopped, a  line stating "audio overload".


If it's a software problem, why don't you give Tiger a spin?

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Re: Audio refuses service

by Rudolf O. Durrer :: Rate this Message:

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Am 22.10.2009 um 17.30 schrieb Giovanni Lanzani:

>> The thing is, that it's probably not exactely the hardware
>> which is  the culprit, but somehow of a piece of the audio
>> software.
>> As I have stated: suddenly, the sound comes back again,
>> without that  any external interference had happened to the
>> computer.
>> I checked it also with "AU Lab.app" from developer
>> tools. This one  gave me a small hint by displaying each
>> time, the sound stopped, a  line stating "audio overload".
>
>
> If it's a software problem, why don't you give Tiger a spin?

Good idea, but I' not expert in screensharing (I can access the  
Powerbook only through screensharing).
Screensharing is build in Leo and needs only a click on a small  
Applescript, but I have any idea how to handle that in Tiger....

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Re: Audio refuses service

by Giovanni Lanzani :: Rate this Message:

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"Rudolf O. Durrer" <r.o.durrer@...>
writes:

> Am 22.10.2009 um 17.30 schrieb Giovanni Lanzani:
>
>>> The thing is, that it's probably not exactely the hardware
>>> which is  the culprit, but somehow of a piece of the audio
>>> software.
>>> As I have stated: suddenly, the sound comes back again,
>>> without that  any external interference had happened to the
>>> computer.
>>> I checked it also with "AU Lab.app" from developer
>>> tools. This one  gave me a small hint by displaying each
>>> time, the sound stopped, a  line stating "audio overload".
>>
>>
>> If it's a software problem, why don't you give Tiger a spin?
>
> Good idea, but I' not expert in screensharing (I can access
> the  Powerbook only through screensharing).
> Screensharing is build in Leo and needs only a click on a
> small  Applescript, but I have any idea how to handle that
> in Tiger....

You can just use a VNC server and client like

http://www.macupdate.com/info.php/id/11283/vine-server-%26-viewer


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Re: Audio refuses service

by Rudolf O. Durrer :: Rate this Message:

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Am 22.10.2009 um 16.17 schrieb Rudolf O. Durrer:

> Am 22.10.2009 um 04.17 schrieb Macs R We:
> On Oct 21, 2009, at 6:58 PM, Rudolf O. Durrer wrote:
>>
>>> Am 22.10.2009 um 01.25 schrieb Macs R We:
>>>
>>>>
>>>> On Oct 21, 2009, at 2:08 PM, Rudolf O. Durrer wrote:
>>>>
>>>>> This worked fine since years, until yesterday: suddenly, while  
>>>>> listening to the news: no sound anymore.
>>>>> I checked other audio software and all necessary prefs, no sound.
>>>>> Restarting, everything worked again for about 5 minutes, then:  
>>>>> no sound anymore.
>>>>> Waiting (without restarting) about 10 minutes, sound came back,  
>>>>> but again, only for a short time.
>>>>>
>>>>> Wiped out the HD completely, set up a new OS 10.5.8: the same  
>>>>> problem still persists.
>>>>>
>>>>> Question:
>>>>> Is there a software to check the audio device of the computer?
>>>>
>>>> If any software does this, it would be the Apple Hardware Test on  
>>>> the original boot disk for this model.  Depending on the vintage  
>>>> of the Mac, you either hold down the D key while booting from the  
>>>> CD/DVD, or you hold down Option and then choose the AHT partition.
>>>
>>> ...snip...snip...
>
> The thing is, that it's probably not exactely the hardware which is  
> the culprit, but somehow of a piece of the audio software.
> As I have stated: suddenly, the sound comes back again, without that  
> any external interference had happened to the computer.
> I checked it also with "AU Lab.app" from developer tools. This one  
> gave me a small hint by displaying each time, the sound stopped, a  
> line stating "audio overload".

Funny enough: after a few days out of office, the interruptions are  
less frequently and last for shorter time.

This is, what I I have dedected at the console: "03.11.09 00:03:47  
kernel WARNING: AppleUSBAudio has detected that clock_get_uptime ()  
value changed radically from previous values".
Does anybody know, what that message would tell exactely??


************************
Rudolf O. Durrer
International Judge ISAF

Residence Switzerland:
Chalet Ahoi
6365 Kehrsiten

Cell +41 79 441 00 11
Mail: r.o.durrer@...

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Re: Audio refuses service

by Lawrence Sica-2 :: Rate this Message:

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On Nov 2, 2009, at 6:20 PM, Rudolf O. Durrer wrote:

> Am 22.10.2009 um 16.17 schrieb Rudolf O. Durrer:
>> Am 22.10.2009 um 04.17 schrieb Macs R We:
>> On Oct 21, 2009, at 6:58 PM, Rudolf O. Durrer wrote:
>>>
>>>> Am 22.10.2009 um 01.25 schrieb Macs R We:
>>>>
>>>>>
>>>>> On Oct 21, 2009, at 2:08 PM, Rudolf O. Durrer wrote:
>>>>>
>>>>>> This worked fine since years, until yesterday: suddenly, while  
>>>>>> listening to the news: no sound anymore.
>>>>>> I checked other audio software and all necessary prefs, no sound.
>>>>>> Restarting, everything worked again for about 5 minutes, then:  
>>>>>> no sound anymore.
>>>>>> Waiting (without restarting) about 10 minutes, sound came back,  
>>>>>> but again, only for a short time.
>>>>>>
>>>>>> Wiped out the HD completely, set up a new OS 10.5.8: the same  
>>>>>> problem still persists.
>>>>>>
>>>>>> Question:
>>>>>> Is there a software to check the audio device of the computer?
>>>>>
>>>>> If any software does this, it would be the Apple Hardware Test  
>>>>> on the original boot disk for this model.  Depending on the  
>>>>> vintage of the Mac, you either hold down the D key while booting  
>>>>> from the CD/DVD, or you hold down Option and then choose the AHT  
>>>>> partition.
>>>>
>>>> ...snip...snip...
>>
>> The thing is, that it's probably not exactely the hardware which is  
>> the culprit, but somehow of a piece of the audio software.
>> As I have stated: suddenly, the sound comes back again, without  
>> that any external interference had happened to the computer.
>> I checked it also with "AU Lab.app" from developer tools. This one  
>> gave me a small hint by displaying each time, the sound stopped, a  
>> line stating "audio overload".
>
> Funny enough: after a few days out of office, the interruptions are  
> less frequently and last for shorter time.
>
> This is, what I I have dedected at the console: "03.11.09 00:03:47  
> kernel WARNING: AppleUSBAudio has detected that clock_get_uptime ()  
> value changed radically from previous values".
> Does anybody know, what that message would tell exactely??


IIRC it's related to bus counters.  It might be a meaningless error,  
though if you are having problems it is most likely related.

--Larry


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Re: Audio refuses service

by Rudolf O. Durrer :: Rate this Message:

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Am 03.11.2009 um 03.53 schrieb Lawrence Sica:

>>
>> This is, what I I have dedected at the console: "03.11.09 00:03:47  
>> kernel WARNING: AppleUSBAudio has detected that clock_get_uptime ()  
>> value changed radically from previous values".
>> Does anybody know, what that message would tell exactely??
>
>
> IIRC it's related to bus counters.  It might be a meaningless error,  
> though if you are having problems it is most likely related.


Thx, Lawrence, but that exceeds by far my ability of understanding.  
I'm unfortunately not a geek in computer sciences *smiling*


But this morning, I had a few more messages on the console after the  
radio started (radio start is automatic at 08:15:00 through cron)
"03.11.09 08:15:03 kernel Sound assertion "0 != err" failed in  
"AppleLegacyAudio/AppleTexas2Audio/AppleTexas2Audio.cpp" at line 960  
goto Exit"

Then I had a few minutes of sound, and that stopped again, with  
several messages about the clock_get_uptime () value, which has  
changed, followed by

"03.11.09 08:17:19 kernel IOAudioStream[0x1cd2700]::clipIfNecessary()  
- Error: attempting to clip to a position more than one buffer ahead  
of last clip position (18,1c41)->(175,7a1)."
"03.11.09 08:17:19 kernel IOAudioStream[0x1cd2700]::clipIfNecessary()  
- adjusting clipped position to (174,1c41)"

What is now clipped where? The radio is a live stream, no recording is  
set.
Anybody can help me with that?
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