On Saturday 11 February 2006 20:44, Francisco Woodland wrote:
> Hello everyone,
>
> About a week ago I bought a PVR-500 (Samsung tuners)
> to put in the MythTV box I was making. Using the
> 0.4.2 ivtv drivers along with the tuner.c patch that
> Hans recently posted to the mailing list (thanks!), I
> believe I have both tuners working and accessible in
> MythTV. The problem I am having is with the reception
> and sound on tuner 0.
>
> First of all, the quality of the output of tuner 1 is
> excellent. However, the quality of the output of
> tuner 0 is quite fuzzy, especially on some of the
> lower channels. In addition to that, tuner 0 seems to
> have intermittent sound problems. Sometimes when I
> switch to a channel with tuner 0, I will get this
> loud, high buzzing sound along with the TV audio.
> However, when I switch channels, eventually this
> problem goes away, even if I go back to the same
> channel I was originally on.
Can you try attached patch to the tuner.c source? I have no idea if this
will work, but it's worth a try.
Hans
>
> I read some notes about the PVR-500 being particularly
> sensitive to signal strength, so I went out and bought
> an amplifier from Radio Shack to see if that would
> solve the problem. While I did see a slight increase
> in picture quality on tuner 0 (it's still not what I
> would like), the sound problem is still there and
> doesn't seem to have gotten any better.
>
> Is there anything else I can do to fix this problem?
> Might I have a bad PVR-500?
>
> I'm not sure what sort of debug output is useful to
> debug this, but I have seen others include the output
> from dmesg, which I put at the end of this message.
> Let me know if there's anything else I can give that
> would help diagnose this problem.
>
> Thanks,
> -Francisco
--- t.c 2006-02-11 20:55:17.000000000 +0100
+++ tuner.c 2006-02-11 20:55:32.000000000 +0100
@@ -1380,7 +1380,7 @@
*/
div = freq + tun->IFPCoff;
- if ((t->type == TUNER_PHILIPS_SECAM ||
+ if ((t->type == TUNER_PHILIPS_SECAM || t->type == TUNER_SAMSUNG_TCPN_2121P30A ||
t->type == TUNER_PHILIPS_FM1216ME_MK3) && freq < t->freq) {
buffer[0] = tun->config;
buffer[1] = config;
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