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Tasklist

FS#17475 - [kernel26] audio noise (disappears using "cat /dev/audio")

Attached to Project: Arch Linux
Opened by Jan Rüegg (rggjan) - Saturday, 12 December 2009, 10:57 GMT
Last edited by Roman Kyrylych (Romashka) - Wednesday, 29 September 2010, 11:36 GMT
Task Type Bug Report
Category Upstream Bugs
Status Closed
Assigned To Tobias Powalowski (tpowa)
Thomas Bächler (brain0)
Architecture x86_64
Severity Low
Priority Normal
Reported Version
Due in Version Undecided
Due Date Undecided
Percent Complete 100%
Votes 0
Private No

Details

With my Macbook Pro (2,2), I hear a strange noise, both when I connect a loudspeaker to the earphone output and when I use the internal loudspeakers.

The issue vanishes when I listen to music, for example. And appears again as soon as I close the player.

interestingly, when I enter "cat /dev/audio" in a console, then the noise disappears! And I can still listen to music and everything else!

I see then many lines of something like "
|z{{{{{{{{|{{{{{{z|{z{{{|{{{{{{{|{{|{{|{{{{{{{|{{{{|{{{{{{||{{|{{{{{|{{{{{|{{{{{|z{{{"

Seems to be some sound drivers issue...

When I can provide any more informations, please ask!
This task depends upon

Closed by  Roman Kyrylych (Romashka)
Wednesday, 29 September 2010, 11:36 GMT
Reason for closing:  No response
Additional comments about closing:  No response in +1 month.
Comment by Gerardo Exequiel Pozzi (djgera) - Tuesday, 12 January 2010, 22:22 GMT
  • Field changed: Status (Unconfirmed → Waiting on Response)
  • Field changed: Category (Packages: Core → Upstream Bugs)
I doubt we can do something about it here. I suggest to start reporting the problem on the ALSA bugtracker project. Thanks.
Comment by Jan Rüegg (rggjan) - Thursday, 21 January 2010, 09:59 GMT
=> https://bugtrack.alsa-project.org/alsa-bug/view.php?id=4874
Comment by Gerardo Exequiel Pozzi (djgera) - Saturday, 03 July 2010, 20:42 GMT
any news on this issue?
Comment by Jan Rüegg (rggjan) - Thursday, 29 July 2010, 11:40 GMT
Nope, problem still there...

Interestingly, the noise does not come from the speakers or earphones, but from within the computer! (But only, when a speaker or earphones are attached)
Comment by Gerardo Exequiel Pozzi (djgera) - Monday, 09 August 2010, 22:42 GMT
status with new kernel 2.6.35? (there are some updates to alsa maybe help...)

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