Hello,

I'm trying to setup the sound card in my new Compaq Presario 700 laptop.
I'm using the kernel 2.4.16 with alsa 0.5.12a. Everything seems to be
correctly configured, the modules are loaded, all the sound channels are
unmuted and the volume is up. Everything is behaving like the sound is ok,
e.g. in KDE, Arts thinks that it's making sound (I can see this with Arts
control). But no sound.

But when I say no sound it's not totally true. If I play something very
loud I can faintly hear something coming out of the speakers. So I guess
that I have a mixer problem. How can I debug this?

This problem is not specific to Alsa. I have the same result with the
kernel module for my sound card.

Searching the net, I founded this
(http://www.opensound.com/readme/README.Notebooks.html):

"Practically all sound chips used in notebooks are currently supported
by OSS. Unfortunately many notebooks use proprietary volume control
chips in addition to the ordinary mixer chip supported by OSS. For
this reason it's possible that no sound comes out while the sound
chip appears to be working properly."

Could this be my problem. If yes, what could I do? Would this volume
control chip appear in lspci for exemple? Under Windows there is a mixer
setting for the sound chip and another mixer for the speakers.

My laptop is based on the Via integrated chipset KN133. The relevant part
of lspci -v is:

00:07.5 Multimedia audio controller: VIA Technologies, Inc. VT82C686
[Apollo Super AC97/Audio] (rev 50)
        Subsystem: Compaq Computer Corporation: Unknown device 0097
        Flags: medium devsel, IRQ 5
        I/O ports at 1000 [size=256]
        I/O ports at 1854 [size=4]
        I/O ports at 1850 [size=4]
        Capabilities: [c0] Power Management version 2

I use the module snd-card-via686a with Alsa or the kernel module
via82cxxx_audio.

please cc me as I'm not on the list.

Denis
_______________________________________________
Denis Pelletier
Étudiant au doctorat
sciences économiques, Université de Montréal


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