Help finding device...

[scott at ehrlichtronics.com (Scott Ehrlich)]

Turns out it was the Window manager (KDE, among others) which present a
pre-screen of services starting.  One of those services was attacking the
audio device.

I've since switched to fvwm95, no services to get in the way of the audio,
and all is now working fine.

Thanks for the good testing steps.   I'll hold onto them.  I've also
learned a lot about the difference beteween lspci and dmesg.

Scott

On Thu, 5 Feb 2004, Derek Martin wrote:

> On Wed, Feb 04, 2004 at 01:36:35AM -0800, Billy SG McCarthy wrote:
> > No, it's not true.  Dmesg tells you that the system
> > recognizes there is *something* there, but you need
> > the proper driver modules to make the hardware do
> > stuff.
>
> This is utter nonsense.  The kernel will not report hardware that it
> has no drivers to handle, excepting the case of USB devices.  Without
> the drivers, the kernel has no way to know that the hardware is there.
> The drivers are what tells the kernel that the hardware is present.
> In this specific case, the dmesg output that Scott posted is being
> generated by the i810 driver, which should be the driver he needs to
> use.
>
> This is excerpted from Scott's original message:
>
> > Intel 810 + AC97 Audio, version 0.24, 00:55:50 Feb  1 2004
> > PCI: Found IRQ 9 for device 00:1f.5
> > PCI: Sharing IRQ 9 with 00:1f.3
> > PCI: Setting latency timer of device 00:1f.5 to 64
> > i810: Intel ICH2 found at IO 0xef00 and 0xe800, MEM 0x0000 and 0x0000,
> > IRQ
> > 9
> > i810_audio: Audio Controller supports 6 channels.
> > i810_audio: Defaulting to base 2 channel mode.
> > i810_audio: Resetting connection 0
> > ac97_codec: AC97 Audio codec, id: ADS96 (Analog Devices AD1885)
> > i810_audio: AC'97 codec 0 Unable to map surround DAC's (or DAC's not
> > present), t
> > otal channels = 2
> > i810_audio: setting clocking to 41379
>
> The i810_audio driver is clearly loaded and reporting this
> information.  The drivers are there; there's some other problem.  If
> you don't believe me, read the source code for the drivers in question
> in <src tree>/drivers/sound/i810_audio.c and you'll see that these
> messages are being printed by that driver.
>
> So then Scott, here are some more questions:
>
> 1. Does your system produce any sound at all, ever?
>
> 2. can you play sounds from the command line, using the "play" command
> from the sox package?
>
> 3. If you can't do number 2, does it work in single-user mode?
>
> 4. do you hear noise if you type the following command:
>
>    dd if=/dev/urandom of=/dev/dsp bs=1k count=1
>
> 5. what is the output of this:
>
>    lsof /dev/dsp
>
> Please include any error messages that result from any of these
> commands.
>
> --
> Derek D. Martin
> http://www.pizzashack.org/
> GPG Key ID: 0xDFBEAD02
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