Re: Sound broken in 3.2.0 and 3.2.1

From: Takashi Iwai
Date: Mon Jan 23 2012 - 04:44:11 EST


At Fri, 13 Jan 2012 13:44:03 -0600 (CST),
Joseph Parmelee wrote:
>
> Hello:
>
> I have built standard kernels 3.2.0 and 3.2.1 and their respective modules.
> Both exhibit no sound with the following sound modules installed:
>
> snd_pcm_oss
> snd_mixer_oss
> snd_hda_codec_realtek
> snd_hda_intel
> snd_hda_codec
> snd_pcm
> snd_timer
> snd
> soundcore
> snd_page_alloc
>
> Kernels 3.1.8 works as expected with the same set of modules (for 3.1.8)
> installed.
>
> What appears to be happening is that the available controls are not being
> properly elucidated in 3.2.x. For example both aumix and gamix show that
> the PCM control is missing; it appears normally in 3.1.x using the same set
> of driver modules. This is causing the immediate problem as this control is
> set to zero on bootup and cannot be accessed thereafter. Sound appears to
> play normally through the alsa driver in mplayer for example, and the
> internal mplayer volume control appears to work normally, but there is no
> sound.
>
> The controls elucidated differ as follows (taken from gamix) for the same
> hardware (intel hda with realtek alc662 codec):
>
> 3.1.x:
>
> 1 - PCM
> 2 - Headphone
> 3 - Rear Mic
> 4 - Front Mic
> 5 - Line
> 6 - Auto-mute Mode
> 7 - Capture
> 8 - Capture 1
> 9 - Input Source
> 10 - Input Source 1
> 11 - IEC958
> 12 - Master
>
>
> 3.2.x:
>
> 1 - Master
> 2 - Channel Mode
> 3 - Front
> 4 - Surround
> 5 - Center
> 6 - LFE
> 7 - Headphone
> 8 - Rear Mic
> 9 - Line
> 10 - Auto-mute Mode
> 11 - Capture
> 12 - Capture 1
> 13 - Input Source
> 14 - Input Source 1
> 15 - IEC958

It seems that the driver can now support multi-channel playbacks.
Could you give alsa-info.sh outputs on both 3.1.x and 3.2.x kernels?
Then we can analyze in more details.


thanks,

Takashi
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