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?
--
"The wise are known for their understanding, and pleasant
words are persuasive." Proverbs 16:21 (New Living Translation)
Team OS/2 ** Reg. Linux User #211409 ** a11y rocks!
Felix Miata *** http://fm.no-ip.com/
