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Help finding device...

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

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,
> 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

Derek D. Martin
This message is posted from an invalid address.
Replying to it will result in undeliverable mail.
Sorry for the inconvenience.  Thank the spammers.

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