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Old 03-09-2010, 11:13 PM   #1
Stevithen
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Loud POPPING sound


There's a popping sound when im on battery power. This has never happened it's concievably possible i have upgraded since the last time ive used the battery..

Restarting ALSA seems to fix it, but if i logout/in it's still broken. The sound pops when initiating audio. For instance when starting a movie. Though sometimes it pops randomly.


Updated summary:

* loud popping sound approx. 11 secs after switching to battery power
* if audio hasnt been used for awhile (11 secs probably?) it will pop when audio is started (like movie, alert etc etc)

Last edited by pixellany; 03-11-2010 at 09:32 AM. Reason: Convert to G-rated
 
Old 03-10-2010, 04:01 PM   #2
frieza
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yeah that has something to do with an alsa timeout for power saving purposes, the pop you hear is probably the sound card being re-initialized
i forget the exact file you have to edit but the value can be changed or disabled
 
Old 03-10-2010, 04:18 PM   #3
jefro
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Not really a family worded post, could you edit that please?

Could it be a bad connection somewhere?
 
Old 03-11-2010, 09:34 AM   #4
pixellany
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Quote:
Originally Posted by jefro View Post
Not really a family worded post, could you edit that please?
Has been upgraded to a "G" rating...

OP: Watch the language, please
 
Old 03-28-2010, 03:52 PM   #5
Super TWiT
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This might help. Apparently, you can echo values to this power save option. So, if you have an ac-97 soundcard (as root)
Code:
echo 10 > /sys/modules/snd_ac97_codec/parameters/power_save
It sounds like there is a corresponding file for hd cards. I wouldn't know as my kernel doesn't seem to be built with those.
 
  


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