Re: Intel HDA on Mac Pro

[Shaw Terwilliger <sterwill@sourcegear.com>]

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Tobin Davis wrote:
> modprobe -r snd-hda-intel
> dmesg -c >/dev/null
> modprobe snd-hda-intel model=auto
> dmesg >dmesg.out  # send me this output
> 
> This should (hopefully) detect which port the headphones are on.  It
> won't enable sound, but it is useful for detecting pins from the bios
> settings.

File is attached.

> Also, when you said sound was coming from the surround channels, do you
> know if the front output was coming from that?  To test this, reload the
> driver with "model=macpro" and type:
> speaker-test -c 6 -t wav -Dplug:surround51

I get:

Unable to set nperiods 4 for playback: Invalid argument
Setting of hwparams failed: Invalid argument

If I change "-c 6" to "-c 8", I can run with the rest of the args (also
works with 4).  The "rear right" channel in the speaker test comes from
the actual front right speaker (and "rear left" from the actual front
left).  Speakers are plugged in the to Mac's rear line-out.  And it's
the "Surround" mixer strip (alsamixer) that controls these volumes.

-- 
Shaw Terwilliger <sterwill@sourcegear.com>
SourceGear LLC

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[593939.343584] ACPI: PCI Interrupt 0000:00:1b.0[A] -> GSI 23 (level, low) -> IRQ 225
[593939.344458] PCI: Setting latency timer of device 0000:00:1b.0 to 64
[593939.378547] ALSA /data/downloads/alsa-driver-1.0.14rc1/pci/hda/../../alsa-kernel/pci/hda/hda_intel.c:696: codec_mask = 0x1
[593939.556328] ALSA /data/downloads/alsa-driver-1.0.14rc1/pci/hda/hda_codec.c:1743: hda_codec: model 'auto' is selected
[593939.604812] ALSA /data/downloads/alsa-driver-1.0.14rc1/pci/hda/hda_codec.c:2175: autoconfig: line_outs=1 (0x15/0x0/0x0/0x0/0x0)
[593939.604817] ALSA /data/downloads/alsa-driver-1.0.14rc1/pci/hda/hda_codec.c:2179:    speaker_outs=1 (0x1a/0x0/0x0/0x0/0x0)
[593939.604821] ALSA /data/downloads/alsa-driver-1.0.14rc1/pci/hda/hda_codec.c:2183:    hp_outs=1 (0x18/0x0/0x0/0x0/0x0)
[593939.604824] ALSA /data/downloads/alsa-driver-1.0.14rc1/pci/hda/hda_codec.c:2191:    inputs: mic=0x0, fmic=0x0, line=0x19, fline=0x0, cd=0x0, aux=0x0

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