Re: hda_intel: too quiet sound (regression)

Jiri Slaby
2010-07-26T14:48:23Z

On 07/26/2010 04:42 PM, Jiri Slaby wrote:
> Hi,
>
> after I upgraded from 2.6.34-rc5-mm1 to 2.6.35-rc5-mm1 (there were other
> issues in between them), the sound from my soundcard is very very quiet.
>
> alsa-info:
> http://www.alsa-project.org/db/?f=dcadb29a2d5d047ecf5545792ac3239dc0c8c7f0
>
> Any ideas?

I've just find out that whatever value 1-64 is set the Master control to
via amixer, it plays still the same. So the mixer (Master volume) is
somehow screwed up.

These two are the same volumes:
# amixer -D hw sset Master,0 64
Simple mixer control 'Master',0
Capabilities: pvolume pvolume-joined pswitch pswitch-joined penum
Playback channels: Mono
Limits: Playback 0 - 64
Mono: Playback 64 [100%] [0.00dB] [on]
# amixer -D hw sset Master,0 1
Simple mixer control 'Master',0
Capabilities: pvolume pvolume-joined pswitch pswitch-joined penum
Playback channels: Mono
Limits: Playback 0 - 64
Mono: Playback 1 [2%] [-47.25dB] [on]

This turns sound off, indeed:
amixer -D hw sset Master,0 0
Simple mixer control 'Master',0
Capabilities: pvolume pvolume-joined pswitch pswitch-joined penum
Playback channels: Mono
Limits: Playback 0 - 64
Mono: Playback 0 [0%] [-48.00dB] [on]

regards,
--
js