Re: Intel HDA on Mac Pro

[Shaw Terwilliger <sterwill@sourcegear.com>]

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alsa-devel@lists.sourceforge.netTobin Davis wrote:
> This is strange.  Could you try 'lspci -s  0:1b -vv"?  It should have
> something there, but maybe not.

00:1b.0 Audio device: Intel Corporation Enterprise Southbridge High
Definition Audio (rev 09)
	Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr-
Stepping- SERR- FastB2B-
	Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort-
<MAbort- >SERR- <PERR-
	Latency: 0, Cache Line Size: 256 bytes
	Interrupt: pin A routed to IRQ 225
	Region 0: Memory at 92f00000 (64-bit, non-prefetchable) [size=16K]
	Capabilities: [50] Power Management version 2
		Flags: PMEClk- DSI- D1- D2- AuxCurrent=55mA
PME(D0+,D1-,D2-,D3hot+,D3cold+)
		Status: D0 PME-Enable- DSel=0 DScale=0 PME-
	Capabilities: [60] Message Signalled Interrupts: 64bit+ Queue=0/0 Enable-
		Address: 0000000000000000  Data: 0000
	Capabilities: [70] Express Unknown type IRQ 0
		Device: Supported: MaxPayload 128 bytes, PhantFunc 0, ExtTag-
		Device: Latency L0s <64ns, L1 <1us
		Device: Errors: Correctable- Non-Fatal- Fatal- Unsupported-
		Device: RlxdOrd- ExtTag- PhantFunc- AuxPwr- NoSnoop+
		Device: MaxPayload 128 bytes, MaxReadReq 128 bytes
		Link: Supported Speed unknown, Width x0, ASPM unknown, Port 0
		Link: Latency L0s <64ns, L1 <1us
		Link: ASPM Disabled CommClk- ExtSynch-
		Link: Speed unknown, Width x0

>> Kernel messages are from 1.0.13 with --with-debug=full:
>>
> I had thought you compiled with "--with-debug=detect".  This actually
> gives different output than full debug mode.

I changed it to "full" later to see if I got any more info.  Here they
are again with --with-debug=detect (4 Xeon cores makes ALSA compiles fly
by):

modprobe snd-hda-intel:
[37954.257842] ACPI: PCI Interrupt 0000:00:1b.0[A] -> GSI 23 (level,
low) -> IRQ 225
[37954.258700] PCI: Setting latency timer of device 0000:00:1b.0 to 64
[37954.291651] ALSA
/data/downloads/alsa-driver-1.0.13/pci/hda/../../alsa-kernel/pci/hda/hda_intel.c:680:
codec_mask = 0x1
[37954.471856] ALSA
/data/downloads/alsa-driver-1.0.13/pci/hda/hda_codec.c:1756: hda_codec:
PCI 0:0, codec config 0 is selected

> This is actually good info.  Interesting that sound is coming out from
> the Surround channels.  The low volume could mean that EAPD still needs
> to be set.
> 
> I'll look more into this tomorrow.  Hopefully I can get a patch for you
> to test.

Thanks for all your help.  I'm happy to test any patches you come up with.

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


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