Re: Tuning broken in development branch, 2.6.20 for lowest freq channel with TT DVB-C 1500

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Kari Salmela wrote:
Hello

Hardware: Technotrend DVB-C 1500, CI, Conax CAM, Asus P5B

Am I the only one left alone without working system with current development v4l tree? Somewhere between 2.6.18.1 and 2.6.20 (and current mercurial, also) something changed, and tuning to Discovery channel no longer works at least for me. With 2.6.18.1 plain vanilla kernel, Discovery channel on 138 Mhz works fine:


Well, after going through the changes that might have had effect on
tuning, I found out the one which had caused this problem. I do not know
the actual reason behind the change, but the changelog says that it
was meant to "Fix TD1316 tuner for DVBC". But at least in my case it
seams to have broken the tuner instead.
Attached is a patch to revert the change.

>
All the other multiplexes work ok with both setups, except for one HD channel with QAM256, which has some artifacts, but that’s a different issue…

Although it is a different issue, I would really like to know if someone had any suggestions how to even try to fix it...

-Petri
--- linux/drivers/media/dvb/ttpci/budget-ci.c.orig      2007-04-25 22:09:58.000000000 +0300
+++ linux/drivers/media/dvb/ttpci/budget-ci.c   2007-04-25 22:01:43.000000000 +0300
@@ -910,7 +910,7 @@
                band = 1;
        } else if (tuner_frequency < 200000000) {
                cp = 6;
-               band = 2;
+               band = 1;
        } else if (tuner_frequency < 290000000) {
                cp = 3;
                band = 2;
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