Sound is gone

jack craig jackc at linuxlighthouse.com
Wed Jul 29 18:16:44 UTC 2009


On 07/29/2009 11:01 AM, Anne Wilson wrote:
> On Wednesday 29 July 2009 18:53:15 Anne Wilson wrote:
>    
>> On Wednesday 29 July 2009 18:32:52 jack craig wrote:
>>      
>>> On 07/29/2009 10:17 AM, Antonio M wrote:
>>>        
>>>> after latest updates, any sound application when palys streams from
>>>> the net crashes after a short time.
>>>> No idea what is causing such a problem
>>>>          
>>> explore recent threads, look at your /var/log/messages and see if our
>>> recent discovery is also your problem?
>>>
>>> i have a work around if you are getting alsa bug reports in your
>>> messages file.
>>>
>>> hth, jackc...
>>>        
>> How about a clue, Jack?  So much hokum has been talked that I've been
>> skipping the sound threads, particularly as everything else plays
>> correctly.  I thought or a moment that I was going to get a whole track
>> played (my problem is in amarok, but exactly the same as the rhythmbox
>> one).  This is what happened:
>>
>> Jul 29 18:45:33 anne-laptop pulseaudio[26616]: ratelimit.c: 7106 events
>> suppressed
>> Jul 29 18:45:33 anne-laptop pulseaudio[26616]: alsa-sink.c: Increasing
>> minimal latency to 56.00 ms
>> Jul 29 18:48:26 anne-laptop pulseaudio[26616]: alsa-sink.c: Increasing
>> wakeup watermark to 46.00 ms
>> Jul 29 18:48:31 anne-laptop pulseaudio[26616]: ratelimit.c: 6194 events
>> suppressed
>> Jul 29 18:48:36 anne-laptop pulseaudio[26616]: ratelimit.c: 6014 events
>> suppressed
>> Jul 29 18:48:38 anne-laptop kernel: kio_thumbnail[808]: segfault at 1320 ip
>> 00a4f1de sp bfa0848c error 4 in libgcc_s-4.4.0-20090506.so.1[a2e000+2a000]
>> ^C
>>
>> The moment of the 'Increasing wakeup watermark' message is when it started
>> to race and crackle.
>>
>> Is this what you were expecting to see?  I so, what's the workaround?
>>
>> Just out of curiosity, I'll do the same experiment while playing it in
>> kaffeine, as I have never seen it happen there.  It will be interesting to
>> see whether the same messages appear.
>>
>>      
> Yes, in kaffeine the same thing happened.  Everything was going swimmingly
> until
>
> Jul 29 18:58:51 anne-laptop pulseaudio[26616]: ratelimit.c: 4191 events
> suppressed
> Jul 29 18:58:51 anne-laptop pulseaudio[26616]: alsa-sink.c: Increasing wakeup
> watermark to 56.00 ms
> Jul 29 18:58:56 anne-laptop pulseaudio[26616]: ratelimit.c: 6390 events
> suppressed
> Jul 29 18:59:01 anne-laptop pulseaudio[26616]: ratelimit.c: 5688 events
> suppressed
>
> So it's an alsa bug?
>
> Anne
>    
sorry, i didnt want to pollute the group with WAG's if its not the same 
issue.

see

https://bugzilla.redhat.com/show_bug.cgi?id=514213

for defect details.

this is apparently fixed in the mainline and due next release.
i am curious if you dont also get the messages entry about the alsa bug for snd_pcm_delay() ?

anyway, the fix that worked for me, posted earlier, ...

to disable the g-f feature. do this, in

/etc/pulse/default.pa,

change, ...

load-module module-hal-detect

to

load-module module-hal-detect tsched=0

kill off the existing pulseaudio daemon so it restarts and reads the config update.

hth, jackc...



-- 
    jack craig
       jackc at LinuxLightHouse.com
          831-684-1375 (Office)
             831-596-6924 (cell)
                IM: jackcraigaptos (AIM)

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