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From: Terry Barnaby <terry1@beam.ltd.uk>
To: Terry Barnaby <terry1@beam.ltd.uk>
Cc: linux-dvb@linuxtv.org
Subject: Re: [linux-dvb] Twinhan VisionPlus DVB-T Card not working
Date: Fri, 21 Nov 2008 10:19:14 +0000	[thread overview]
Message-ID: <49268B22.5040501@beam.ltd.uk> (raw)
In-Reply-To: <492568A2.4030100@beam.ltd.uk>

Terry Barnaby wrote:
> Hi,
> 
> I am having a problem with the latest DVB drivers.
> I have a Twinhan VisionPlus DVB-T card (and other DVB cards) in my
> MythTv server running Fedora 8. This is running fine
> with the Fedora stock kernel: 2.6.26.6-49.fc8.
> 
> However, I have now added a Hauppauge DVB-S2 and so have been
> trying the latest DVB Mercurial DVB tree.
> This compiles and installs fine and the two DVB-T cards and the
> new DVB-S card are recognised and has /dev/dvb entries.
> The first DVB-T card, a Twinhan based on the SAA7133/SAA7135
> works fine but the Twinhan VisionPlus, which is Bt878 will not
> tune in.
> 
> Any ideas ?
> Has there been any recent changes to the Bt878 driver that could
> have caused this ?
> ...

I have been playing around with the bt8xx source code.
If I set "dst_algo = 1" in "bt8xx/dst.c" then my Twinhan VisionPlus
DVB-T appears to work.
This parameter appears to enable hardware rather than software tuning.
I assume there is some bug in the software tuning algorithm ...

What are the benefits of software tuning over hardware based tuning ?

Cheers



Terry

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  reply	other threads:[~2008-11-21 10:19 UTC|newest]

Thread overview: 6+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2008-11-20 13:39 [linux-dvb] Twinhan VisionPlus DVB-T Card not working Terry Barnaby
2008-11-21 10:19 ` Terry Barnaby [this message]
2008-11-21 10:47 ` [linux-dvb] [PATCH] " Terry Barnaby
2008-11-21 10:52   ` [linux-dvb] [PATCH] Take 2: " Terry Barnaby
2008-11-21 20:32     ` Manu Abraham
2008-11-22  7:19     ` [linux-dvb] [PATCH] Take 3: " Terry Barnaby

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