Hi Patrick,
Thanks for that Patrick. My patch fixed the problem for me and someone
else I know with the same card. I'll try the fix tonight, and also
will get the other guy to test it.
What module parameter do I need to use? Do I also need the new firmware?
I looked through your repository and couldn't see the change that fixed
the problem, what was the revision? ... e.g. my patch added a module
parameter to dib3000mc, but I can see a new module parameter there.
Thanks,
Matt
Patrick Boettcher wrote:
Hi Matt,
Based on your Idea I just committed something which will fix your
problems using a module parameter.
I don't know why Hauppauge has splitted the fix into two, it is not
useful, both register-changes are required to solve the issue.
By using those settings one will decrease the mobile performance of the
receiver, but for fixed-reception it is OK.
Can you please try it from my hg repo: http://linuxtv.org/hg/~pb/v4l-dvb/?
regards,
Patrick.
On Thu, 19 Jul 2007, Matt Doran wrote:
Hi Patrick,
I tracked down the code that sets up the registers in dib3000mc.c. I created
a patch to add a "fix_sfn" module option to the dib3000mc modele. e.g. when
fix_sfn 0x01 bit is set, configure register 29 -> 0x1073 ... when fix_sfn 0x02
bit is set, configure register 108 -> 0x4000.
I've tested this with "fix_sfn" set to 3 to enable both fixes, and it doesn't
cause any regressions. Tonight I have not had any reception/stuttering
problems (it doesn't happen all the time), so I'm not sure if it fixes the
problem..... but I'll continue to use this to see if it successfully resolves
my issues. I'll also ask others I know who see this problem to test this fix.
Can you review this patch? Does it look right?
I wasn't sure what to call the module option, or how to describe the options
... if you have any suggestions I'd be happy to adjust the patch.
Regards,
Matt
Patrick Boettcher wrote:
Hi,
I nothing really important happens I'm trying to provide something this or
beginning of next week.
Patrick.
On Sun, 15 Jul 2007, Matt Doran wrote:
Hi there,
The Nova-T 500 has some serious problems with some channels in various
locations around Australia. These channels show serious video
break-up/stuttering like there is poor reception, however this is not the
case. Using other tuners (e.g. other cards, or tuners in TVs), or using
the Nova-T 500 on Windows doesn't exhibit these problems. I raised this
issue 3 or four months ago
(http://www.linuxtv.org/pipermail/linux-dvb/2007-April/017065.html).
Patrick Boettcher indicated that it relates to some peculiarities with the
DVB broadcast
(http://www.linuxtv.org/pipermail/linux-dvb/2007-April/017102.html).
The Hauppauge windows drivers now have a registry key
(HKEY_LOCAL_MACHINE\System\CurrentControlSet\Services\HCW99BDA\Parameters\FixSFN)
that can be used to modify the tuner's behaviour to fix this problem.
I'd like to work on a patch for the drivers to add a module option
"fix_sfn", that does the same as the windows drivers. But need to know
what registry settings need to be changed. If Patrick or someone from
Hauupauge or Dibcom could give me this information, I'd like to develop
the initial patch.
Thanks in advance,
Matt
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