On 2012-09-23 19:54, Anders Thomson wrote:
> diff --git a/drivers/media/pci/saa7134/saa7134-cards.c b/drivers/media/pci/saa7134/saa7134-cards.c
> index bc08f1d..98b482e 100644
> --- a/drivers/media/pci/saa7134/saa7134-cards.c
> +++ b/drivers/media/pci/saa7134/saa7134-cards.c
> @@ -3288,13 +3288,13 @@ struct saa7134_board saa7134_boards[] = {
> .name = "Pinnacle PCTV 310i",
> .audio_clock = 0x00187de7,
> .tuner_type = TUNER_PHILIPS_TDA8290,
> .radio_type = UNSET,
> .tuner_addr = ADDR_UNSET,
> .radio_addr = ADDR_UNSET,
> - .tuner_config = 1,
> + .tuner_config = 0,
> .mpeg = SAA7134_MPEG_DVB,
> .gpiomask = 0x000200000,
> .inputs = {{
> .name = name_tv,
> .vmux = 4,
> .amux = TV,
>
>
> Please test if the above patch fixes the issue you're suffering[1]. If so, then
> we'll need to add a modprobe parameter to allow disabling LNA for saa7134 devices
> with LNA.
>
> [1] Note: the above is not the fix, as some users of this board may be using the
> original antenna, and changing tuner_config will break things for them; the right
> fix is likely to allow controlling the LNA via userspace.
Tried that patch on 3.5.3. No improvement, unfortunately.
I have to retract that. It turns out that there is some strange interaction
between the cabletv box and the card. When I rebooted into 'my' patch
I still got the noisy signal. I then power cycled the cabletv box, and
voila,
I got a good signal on my own patch. Wondering what I had actually tested
with your patch, I tested it again, and indeed it works!
So, 1) you're on to something, that's for sure, and 2) there is
_something_ in
the cabletv box which can make all this fall into a bad state too.
Cheers,
/Anders
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