[Mageia-dev] no sound

[Felix Miata]

On 2012/05/05 17:05 (GMT+0100) Colin Guthrie composed:

[alsa.card_name = "Intel ICH5"
...
alsa.driver_name = "snd_intel8x0"
...
device.product.name = "82801EB/ER (ICH5/ICH5R) AC'97 Audio]

> Can you also attach "amixer -c0" (before running the below commands).

> More specifically I suspect that the "Master" channel is 0+muted or
> otherwise doing very little.

# amixer -c0
Simple mixer control 'Master',0
   Capabilities: pvolume pswitch
   Playback channels: Front Left - Front Right
   Limits: Playback 0 - 31
   Mono:
   Front Left: Playback 0 [0%] [-46.50dB] [off]
   Front Right: Playback 0 [0%] [-46.50dB] [off]
...

> A couple things that should get sound are:
>   (as root) alsactl init 0

With SMplayer already playing a (soundless) DVD iso:
# alsactl init 0
Found hardware: "ICH4" "Analog Devices AD1981B" "AC97a:41445374" "0x1028" 
"0x0151"
Hardware is initialized using a generic method

Still no sound, until turning Kmix up from about 45% default to 100%, which 
gives sound at a level I estimate to be in the vicinity of -40db, barely 
perceptible above the background hum.

> This should "initialise" your card to sensible default which should set
> Master to 55% unmuted.

55% [-21.00dB][on]

> If that doesn't work, can you try "amixer -c0 set Master 55% unmute"

"amixer -c0 set Master 85% unmute" helped a lot, but not enough. Hum remains 
unacceptable.

Log out and back in helped more, and bumping to 99%. I still hear the hum, 
but the level seems comparable to that in WinXP.

> Hopefully that'll get sound, but the correct fix is for me to fix this
> in PulseAudio...

Don't let me get in your way. Thanks! :-)


PS: Could I likely get rid of rest of the hum? Is this normal when as the 
wire crawls 8m or more separates the PC sound jack from the amp?
-- 
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words are persuasive." Proverbs 16:21 (New Living Translation)

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