[mythtvnz] Mythtv distorting audio from PVR150

[Graeme Woollett]

I'm having some issues with mythtv and a pvr150.
I'm using a composite feed from a telstra cable box.
The PC is based on an Intel Springdale chipset.
I've tried mplayer /dev/video0 and the audio quality is fine.
But when I play back through mythtv the audio has high frequency 
"digital sounding" distortion.

Below is output from dmesg

[17179583.780000] ivtv:  ==================== START INIT IVTV 
====================
[17179583.780000] ivtv:  version 0.7.0 (tagged release) loading
[17179583.780000] ivtv:  Linux version: 2.6.17-11-generic SMP mod_unload 
586 REGPARM gcc-4.1
[17179583.780000] ivtv:  In case of problems please include the debug 
info between
[17179583.780000] ivtv:  the START INIT IVTV and END INIT IVTV lines, 
along with
[17179583.780000] ivtv:  any module options, when mailing the ivtv-users 
mailinglist.
[17179583.904000] intel8x0_measure_ac97_clock: measured 54554 usecs
[17179583.904000] intel8x0: clocking to 48000
[17179583.904000] ACPI: PCI Interrupt 0000:02:08.0[A] -> GSI 20 (level, 
low) -> IRQ 209
[17179583.924000] e100: eth0: e100_probe: addr 0xf6000000, irq 209, MAC 
addr 00:1A:4D:23:AF:FB
[17179583.928000] ivtv0: Autodetected Hauppauge WinTV PVR-150 card 
(cx23416 based)
[17179583.928000] ACPI: PCI Interrupt 0000:02:03.0[A] -> GSI 18 (level, 
low) -> IRQ 169
[17179583.928000] ivtv0: Unreasonably low latency timer, setting to 64 
(was 32)
[17179583.960000] e100: eth0: e100_watchdog: link up, 100Mbps, full-duplex
[17179583.972000] tveeprom 0-0050: Hauppauge model 26559, rev G189, 
serial# 9512678
[17179583.972000] tveeprom 0-0050: tuner model is TCL MFPE05 2 (idx 89, 
type 38)
[17179583.972000] tveeprom 0-0050: TV standards PAL(B/G) PAL(I) 
SECAM(L/L') PAL(D/D1/K) (eeprom 0x74)
[17179583.972000] tveeprom 0-0050: audio processor is CX25843 (idx 37)
[17179583.972000] tveeprom 0-0050: decoder processor is CX25843 (idx 30)
[17179583.972000] tveeprom 0-0050: has radio, has no IR remote
[17179584.028000] tuner 0-0061: chip found @ 0xc2 (ivtv i2c driver #0)
[17179584.108000] input: ImExPS/2 Logitech Explorer Mouse as 
/class/input/input2
[17179584.140000] ts: Compaq touchscreen protocol output
[17179584.200000] tda9887 0-0043: chip found @ 0x86 (ivtv i2c driver #0)
[17179584.228000] cx25840 0-0044: cx25843-23 found @ 0x88 (ivtv i2c 
driver #0)
[17179587.548000] cx25840 0-0044: loaded v4l-cx25840.fw firmware (16382 
bytes)
[17179587.628000] wm8775 0-001b: chip found @ 0x36 (ivtv i2c driver #0)
[17179588.292000] ivtv0: loaded v4l-cx2341x-enc.fw firmware (262144 bytes)
[17179588.508000] ivtv0: Encoder revision: 0x02050032
[17179588.508000] ivtv0: Allocate DMA encoder MPEG stream: 128 x 32768 
buffers (4096KB total)
[17179588.508000] ivtv0: Allocate DMA encoder YUV stream: 161 x 12960 
buffers (2048KB total)
[17179588.508000] ivtv0: Allocate DMA encoder VBI stream: 80 x 26208 
buffers (2048KB total)
[17179588.508000] ivtv0: Allocate DMA encoder PCM audio stream: 455 x 
4608 buffers (2048KB total)
[17179588.508000] ivtv0: Create encoder radio stream
[17179588.508000] tuner 0-0061: type set to 38 (Philips PAL/SECAM multi 
(FM1216ME MK3))
[17179588.624000] ivtv0: Initialized Hauppauge WinTV PVR-150, card #0
[17179588.624000] ivtv:  ====================  END INIT IVTV  
====================


Mythtv seems to be the only application having issues with the sound card.
Any ideas?

Thanks
Graeme

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