saa7134 - sound becomes white noise after a few days

[Steffen <starv-v4l@xxxxxxxxxx>]

Hi all,

I have problem with the sound on my saa7134 falling out after a couple of 
days. This happens relatively regularly - the picture is fine, but the 
sound becomes only white noise. I then have to rmmod the modules, and 
modprobe again, and then TV sound is fine for another day or two.

my kernel log gives me some of this right before I lose the sound:
saa7134[0]/audio: audio carrier scan failed, using 5.500 MHz [last detected]
saa7134[0]/audio: audio carrier scan failed, using 6.000 MHz [last detected]
saa7134[0]/audio: audio carrier scan failed, using 6.000 MHz [last detected]

I use the following module options:
saa7134 card=34 oss=1 tuner=9 dsp_nr=1 mixer_nr=1 qss=1 port2=0 debug=1 pal=bg

In addition I've also some times used:
tda9887 nicam=1 audio_debug=1 qss=1 port2=0
- but I'm not really sure that does anything.

Has anyone else experienced something like this? Is there perhaps some 
module option I might have wrong?

I have an Asus Digimatrix running gentoo which I use for MythTV. It 
comes with a saa7134 on a mini-pci inside. I had a look at the chip 
in the box, and it says LG INNOTEK, TALN-M200T. I'm in Norway, so the TV 
standard would be PAL-BG.

I've spent about a month trying to get the card=(x) and tuner=(y) settings 
right for this card, and the other day, on my 912th attempt (yes I kept 
track), I finally managed to tune all my channels, (which was always the 
problem - I could always tune some channels, just not all). I've now 
happily landed on card=34 tuner=9.

dmesg output:
saa7130/34: v4l2 driver version 0.2.12 loaded
saa7134[0]: found at 0000:00:0e.0, rev: 1, irq: 10, latency: 32, mmio: 0xe3800000
saa7134[0]: subsystem: 1043:0210, board: Noval Prime TV 7133 [card=34,insmod option]
saa7134[0]: board init: gpio is 10700
saa7134[0]: i2c eeprom 00: 43 10 10 02 10 28 ff ff ff ff ff ff ff ff ff ff
saa7134[0]: i2c eeprom 10: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
saa7134[0]: i2c eeprom 20: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
saa7134[0]: i2c eeprom 30: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
tuner: Ignoring new-style parameters in presence of obsolete ones
tuner: chip found at addr 0xc0 i2c-bus saa7134[0]
tuner: type set to 9 (Alps HSBH1) by saa7134[0]
saa7134[0]: registered device video0 [v4l2]
saa7134[0]: registered device vbi0
saa7134[0]: registered device dsp1
saa7134[0]: registered device mixer1

I'd greatly appreciate any hints anyone could offer me.

Thanks,
Steffen.

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