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Old 11-30-2010, 11:40 PM   #1
felixq78
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Angry Irritating crackle from ubuntu 10.04 audio system


I've recently noticed a really irritating tick tick crackly sound coming from the audio system with intermittent crackles in between them, very irritating.
Any clues?
 
Old 12-01-2010, 07:09 PM   #2
impert
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Sounds like bad electrical contact somewhere.
 
Old 12-02-2010, 08:48 AM   #3
felixq78
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I've noticed that the crackle occurs simultaneously with the red indicator light at the front of the computer box.
Whenever the light flickers the crackle appears.
I have 3 hard drives and it occurs irrespective of which drive I'm using.
 
Old 12-02-2010, 11:28 PM   #4
frankbell
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Internal or external speakers?

I had this problem with external speakers, swapped them with another pair of speakers I found in a box, and it went away.

I threw away the speakers. They were at least 15 years old and, as my old mechanic used to say, didn't owe me a dime.

You could try booting to a live CD and playing some media with it. That could indicated whether or not the software load is implicated.

My inclination is to lean towards this being a hardware problem.
 
Old 12-03-2010, 09:04 AM   #5
MTK358
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I'm 99% sure that this is a hardware problem and Ubuntu is not to blame.

The subtle power fluctuations created by the inner workings of your computer are not well isolated from the audio output. This basically means that it's a poorly designed or defective sound card.

I've seen a PC with motherboard-integrated sound that was really poorly isolated. It buzzed and crackled a lot, and it would make a loud scratchy sound during graphics-intense things like scrolling or moving a window.
 
Old 12-03-2010, 10:22 PM   #6
felixq78
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Quote:
Originally Posted by frankbell View Post
Internal or external speakers?

I had this problem with external speakers, swapped them with another pair of speakers I found in a box, and it went away.

I threw away the speakers. They were at least 15 years old and, as my old mechanic used to say, didn't owe me a dime.

You could try booting to a live CD and playing some media with it. That could indicated whether or not the software load is implicated.

My inclination is to lean towards this being a hardware problem.
I've tried other speakers and have updated to Ubuntu 10.10 yet it still persists. so that rules out Op/Syst and the hardware.
Good idea about the Live CD I'll try it now.
Thanks
 
Old 12-03-2010, 10:26 PM   #7
felixq78
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Wink

Quote:
Originally Posted by MTK358 View Post
I'm 99% sure that this is a hardware problem and Ubuntu is not to blame.

The subtle power fluctuations created by the inner workings of your computer are not well isolated from the audio output. This basically means that it's a poorly designed or defective sound card.

I've seen a PC with motherboard-integrated sound that was really poorly isolated. It buzzed and crackled a lot, and it would make a loud scratchy sound during graphics-intense things like scrolling or moving a window.
I think you're correct about the sound card, it is an integrated one but I have a couple of spares lying around I'll drag them out and see how they go.
Thanks for your help it is appreciated.
Cheers.
 
Old 12-03-2010, 11:48 PM   #8
felixq78
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'T was the sound card

A big thank you to everyone who helped. I dug out an old sound card, installed it and BINGO! Nice clear sound without a single crackle or spit. A minor drop in volume but not so much as to cause any problem. I'll explore that issue later but for the moment it's sweet.
Cheers.
 
Old 12-04-2010, 09:03 AM   #9
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If you consider the issue solved, mark the thread as solved.
 
  


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