[linux-dvb] [PATCH] Re: Twinhan VisionPlus DVB-T Card not working
terry1 at beam.ltd.uk
Fri Nov 21 11:47:21 CET 2008
Terry Barnaby wrote:
> 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: 22.214.171.124-49.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 tracked this down to a bug in the bt8xx/dst frontend.
It appears that the front end tuning algorithm number as used in
dvb_frontend.c has changed format but the default setting in
bt8xx/dst has not been updated to match.
This patch sets the default algorithm to be software tuning as,
I believe, was the original setting. However, I wonder if
it should be set to use hardware tuning by default ...
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