[Mageia-dev] no sound

Sun May 6 02:09:59 CEST 2012

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/
+