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Bug#648466: [867 MHz powerbook] sound crackles when typing or using trackpad

found 648466 linux-2.6/3.0.0-5
tags 648466 - moreinfo

Steffen Hoenig wrote:

> [   13.256571] i2c i2c-0: PMac Keywest Audio: attach_adapter method is deprecated
> [   13.263656] i2c i2c-0: Please use another way to instantiate your i2c_client

Interesting, but sounds harmless.

> ** Model information
> revision	: 3.2 (pvr 8001 0302)
> platform	: PowerMac
> model		: PowerBook3,5
> machine		: PowerBook3,5
> motherboard	: PowerBook3,5 MacRISC2 MacRISC Power Macintosh


> snd_aoa_i2sbus         19872  0 
> snd_pcm                64222  3 snd_powermac,snd_aoa_i2sbus
> snd_page_alloc          8957  1 snd_pcm
> snd                    50534  10 snd_powermac,snd_aoa_i2sbus,snd_pcm,snd_seq,snd_timer,snd_seq_device
> snd_aoa_soundbus        6653  1 snd_aoa_i2sbus

Ok, this is the AOA (Apple Onboard Audio) ALSA driver.  No obviously
relevant changes since v3.0 upstream.  Good.

Let's take this upstream.  Please send:

 - a summary of the problem and a quick way to reproduce it (e.g.,
   does playing a CD and moving the touchpad always produce crackle?)

 - information about when it started and the version number of the
   oldest kernel you were able to reproduce it with

 - if this was a regression, the version number of the newest kernel
   you were able not to reproduce it with

 - any other weird observations

 - output from the alsa-info.sh script[1], as an attachment

to linuxppc-dev@lists.ozlabs.org, cc-ing alsa-devel@alsa-project.org,
and me or this bug log so we can track the resulting discussion.

Thanks for your quick answers, and hope that helps.

[1] http://git.alsa-project.org/?p=alsa-driver.git;a=blob_plain;f=utils/alsa-info.sh

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