On Fri, 20 Jan 2006, Lee Revell wrote:
On Fri, 2006-01-20 at 18:11 -0800, Bill Unruh wrote:
I am running alsa (mandrake 10.1 alsa version 1.0.6-- so maybe this is
fixed later). If I run alsamixer, I get controls
Headphone, PCM, FronMic, Surround, Center, LFE, Line, CD, Mic,PCSpeaker,
Capture, Capture, Channel, InputSo, Input So.
HOwever the only control that seems to affect output level is PCM, but left
it as very quiet.
If I run aumix on the other hand I have
Vol, PCM, Spkr, Line, Mic PCM2, Igain, and in particular the Vol control
finally allowed me to take the volume up to a listenable level.
The question I have is why is the Vol control not in the alsamixer
controls? ( and how does PCM2 and IGain map onto the alsamixer settings.
No idea, this is not an issue at the ALSA level - you would have to look
at the source code of those mixer apps to see what aumix is doing
differently.
And yes, 1.0.6 is way too old for bug reports. It does not even have
software mixing and volume control.
Actually I think the version is wrong. It is kernel 2.6.11 (which updated
the 2.6.8 kernel in Mandrake 10.1) So whatever alsa is in 2.6.11 is what I
have. (I think it is 1.0.8) I had the 1.0.6 alsa utils, which I updated to
1.0.9, but that made no
difference.
The question of course is NOT why aumix has a volume control which works
but why the alsa mixer (which surely is part of alsa) has no volume
control, and as a result I could not turn up the output volume using alsamixer.
Surely the complete absense of a volume control is a bug.
By the way how in the world do I find out what the alsa level is in some
kernel. I have looked through the sound/* source code in the 2.6.11 kernel
and can find no indiction anywhere of the alsa level. And I cannot seem to
find the level anywhere in the modules.
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