Hi all,
I got it to work! :D I was telling MythTV to send everything to my
digital output directly. This was wrong. I needed to send everything to
my analog output and let the chip do the work. I'm now playing music at
44.1 kHz and movies at 48 kHz. :)
Thanx anyway,
Bart
Bart de Boer wrote:
Mark Knecht wrote:
On Thu, May 1, 2008 at 8:42 AM, Bart de Boer <bart@xxxxxxxxxxxx> wrote:
<SNIP>
====================
Complete output of /proc/asound/card0/codec97#0/ac97#0-0:
0-0/0: Realtek ALC650F
PCI Subsys Vendor: 0x1509
PCI Subsys Device: 0x9202
Capabilities :
DAC resolution : 20-bit
ADC resolution : 18-bit
3D enhancement : Realtek 3D Stereo Enhancement
Current setup
Mic gain : +0dB [+0dB]
POP path : pre 3D
Sim. stereo : off
3D enhancement : off
Loudness : off
Mono output : MIX
Mic select : Mic1
ADC/DAC loopback : off
Double rate slots: 10/11
Extended ID : codec=0 rev=1 LDAC SDAC CDAC DSA=0 SPDIF DRA VRA
Extended status : LDAC SDAC CDAC SPDIF=10/11 SPDIF VRA
PCM front DAC : 44100Hz
PCM Surr DAC : 44100Hz
PCM LFE DAC : 44100Hz
PCM ADC : 44100Hz
SPDIF Control : Consumer PCM Copyright Category=0x2 Generation=1
Rate=44.1kHz
SPDIF In Status : Not Locked
What is on the other end of the spdif output cable?
It's a NAD T175.
I'm struck that the SPDIF In Status is 'Not locked' implying that the
onboard chip and outboard hardware are not in agreement on the exact
frequency. If you are driving a home theater receiver this could be
normal. If you are driving pro equipment then connect a spdif cable
back from the outboard equipment to your machine, assuming you have
access to the spdif in on this machine.
I don't understand why that should work. I don't think I can force my
receiver to use a specific rate. But I'll give it a go.
There is the possibility that Alsa is reporting the wrong speed here...
That seems to be the case. It's still running at 48kHz. I was
experimenting with the following setting: "options snd-intel-8x0
ac97_clock=41194" (without success). That was before I found out I'm
actually using the via82xx driver and not the intel8x0 driver. After
removing that setting it gives me the following output (SPDIF @ 48kHz):
0-0/0: Realtek ALC650F
PCI Subsys Vendor: 0x1509
PCI Subsys Device: 0x9202
Capabilities :
DAC resolution : 20-bit
ADC resolution : 18-bit
3D enhancement : Realtek 3D Stereo Enhancement
Current setup
Mic gain : +0dB [+0dB]
POP path : pre 3D
Sim. stereo : off
3D enhancement : off
Loudness : off
Mono output : MIX
Mic select : Mic1
ADC/DAC loopback : off
Double rate slots: 10/11
Extended ID : codec=0 rev=1 LDAC SDAC CDAC DSA=0 SPDIF DRA VRA
Extended status : SPCV LDAC SDAC CDAC SPDIF=10/11 SPDIF VRA
PCM front DAC : 44100Hz
PCM Surr DAC : 44100Hz
PCM LFE DAC : 44100Hz
PCM ADC : 44100Hz
SPDIF Control : Consumer PCM Copyright Category=0x2 Generation=1
Rate=48kHz
SPDIF In Status : Not Locked
Bart
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