[linux-dvb] Re: Leadtek LR6650 (Conexant) scan / lock problems

[Andrew Wilson <agwilson@rhetorical.com>]

Update: I finally got around to trying black gold on Windows XP, and it 
works just fine on all channels. So there is nothing intrinsic wrong 
with the card.

I think this app installs its own driver. I'll enquire with them about 
trying to fix the linux driver. You never know, they might just help us.

Andrew



Andrew Wilson wrote:
> I think there is something a bit suspect either in the driver or lower 
> down (microcode?) in this card, as I have also see this problem on my 
> strongest mux, thankfully mainly it is Chan 5 + shopping tat. This mux 
> is the strongest signal I have judging by my other DVB box (dec2000t).
>
> This also happens in windows using the latest Stratford driver (107) and 
> Showshifter. One ray of hope is that the Black Gold TV application 
> managed to lock onto the problem Mux and scan it for channels, but I've 
> not been able to get a picture from this application yet, perhaps 
> because I've only used win 2k for this.
>
> I intend to do a bit more investigation once I've got some time to play 
> with XP. I suspect that the Black Gold (Blackbird reference version) may 
> be using custom drivers which diverge from the other drivers that are 
> kicking about on the net.
>
> However, I'm not sure about the assertion that the signal number is 
> reversed. I think it may just be scaled differently from other cards. On 
> mine, the C5 mux is signal ~0x0055, while BBC1 is ~0x002d and is 
> received perfectly. Other weaker muxes are received OK as well.
>
> Let's say that more investigation is required.
>
> Links:
> - windows drivers:
> http://www.tv-cards.com/messageboard/viewtopic.php?t=7342
>
> - black gold windows app:
> http://www.blackgold.tv/support/download.htm
>
>
> Andrew
>
>
> andy@brainpipe.org wrote:
>
> > I'm still having locking problems on certain channels with my LR6650
> > (Conexant Reference) card, and the Crystal Palace transmitter.  The main
> > BBC multiplex is intermittent, and I get nothing on the ITV/Channel 4 
> > one.
> >
> > I've tried removing other PCI cards to reduce interference, shifting the
> > card to another slot, different aerials, a booster... does anyone else
> > have any suggestions of things to try to get a lock?
> >
> > Could it be the drivers?  Would an upgrade to 2.6.10 and the 
> > corresponding
> > patch be likely to make a difference?
> >
> > Or could it really be that my signal is too strong?  Someone noted that
> > the signal strength on this card is reversed - e.g. 0x0044 is a strong
> > signal.
> >
> > Thanks!
> >
> >
> >     Andy
> >
> >
> >
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> > > On Saturday 13 November 2004 17:57, Torgeir Veimo wrote:
> > >
> > > > On Sat, 2004-11-13 at 17:42 +0000, irish wrote:
> > > >
> > > > > Well I upgraded to kernel 2.6.10-rc1, got the bytesex patches and the
> > > > > LR6650 is working extremely well on all channels, I reccomend this
> > > >
> > > > card
> > > >
> > > > > as it's the easiest of the three to get up (no firmware!) and
> > > >
> > > > reception
> > > >
> > > > > is as good as the nova-t if not better. (and they're going for 30 uk
> > > > > pounds on e-bay at the minute)
> > > > >
> > > > > Unfortunately there are problems with the other cards!
> > > > > The nova-t now can only be opened once, a second attempt to open the
> > > >
> > > > card
> > > >
> > > > > fails with a firmware warning, I can work around this by telling myth
> > > >
> > > > to
> > > >
> > > > > keep the card open, so it's not too much of a problem.
> > > >
> > > > This explains the recent tuning problems I've had with my 909 and
> > > > 2.9.10-rc1 with the All-* patch from bytesex.
> > > >
> > > > if you run tzap BBC 1 the first time, you get a lock, and the next time
> > > > you run tzap, it gives no lock, right?
> > >
> > > I guess I would, I can't try just now cos myth is keeping all the cards
> > > open,
> > > sorry
> > >
> > > Anyway, symlinking /lib/firmware to /usr/lib/hotplug/firmware fixes 
> > > my 761
> > > problem and might have fixed the nova-t, I'll check in a second.
> > > And the good news is the 761 reception issue seems MUCH improved with 
> > > this
> > > latest version, it's now watchable with the odd glitch, rather than
> > > completely unwatchable on qam_64.
> > > FYI: I used to use the plain kernel 2.6.8.1 drivers without bytesex 
> > > (silly
> > > me!)
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