Re: My machine is cursed: no sound. Help! [was Re: es1371 sound problems]

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On Fri, 24 Feb 2006, Benjamin LaHaise wrote:

> On Sat, Feb 25, 2006 at 12:40:50AM +0100, Pavel Machek wrote:
> >  0 [I82801DBICH4   ]: ICH4 - Intel 82801DB-ICH4
> >                       Intel 82801DB-ICH4 with AD1981B at 0xc0000c00, irq 5
> >  1 [U0x4fa0x4201   ]: USB-Audio - USB Device 0x4fa:0x4201
> >                       USB Device 0x4fa:0x4201 at usb-0000:00:1d.1-2, full speed
> > root@amd:~#
> >
> > (usb soundcard clicks when I launch mpg123, but that's it.)
> >
> > Any ideas?
>
> I had problems with the ac97 driver and newer kernels until toggling Mute
> on the headphone sense channel.  Alsa has too many bells and whistles that
> need to be properly incanted for machines to emit sound.  Just try futzing
> with the channels in alsamixer.  Otoh, that's a good way to end up with a
> config that doesn't work, too...

There are also a few machines that have microphone in/headphone out
switched/swapped.  There was a ALSA patch around for that.  :(

-- 
~Randy
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