Re: Intel HDA on Mac Pro

[Tobin Davis <tdavis@dsl-only.net>]

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Well, to start, we'll need to know the exact codec information.  Type
"cat /proc/asound/card0/codec*" to find out.  To add your specific
configuration to the driver (if it isn't in the tree already), we'll
also need the subsystem ID from lspci.  Assuming the audio device is on
pci bus 0:1b.0, type 'lspci -s 0:1b -vn" to get that.

>From there, it's probably just a matter of trying different config
models from the ALSA-Configuration.txt (it's in
alsa-driver-1.0.13/alsa-kernel/Documentation if you downloaded the
driver source, or it is in the kernel documentation).

Tobin Davis

On Mon, 2006-12-04 at 14:34 -0600, Shaw Terwilliger wrote:

> I just got a new Mac Pro (not MacBook Pro) that appears to contain an
> on-board Intel High Definition Audio interface (Realtek variation, as
> far as I can tell via "detect" debug).  The ALSA drivers in 2.6.17
> detect the card correctly and my mixer shows all the right channels, but
> no sound comes out.  I compiled and installed the latest ALSA (1.0.13)
> and have the same issue.  I have only found a few others running Linux
> on the Mac Pro, and they seem to have the same issue.
> 
> Other people have reported the MacBook Pro had similar issues (no sound
> out the line-out jack), and a patch was floating around that rewired
> some of the mixing to make it work.  The MacBook Pro seems to use a
> different HDA implementation (Sigmatel, I think) so I'm not sure if the
> patch logic makes sense on the Mac Pro.
> 
> I figured this list was probably the best place to ask: has anyone
> hacked on this driver before?  Where should I start digging?
> 

-- 
Tobin Davis <tdavis@dsl-only.net>

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