[linux-dvb] Re: Twinhan DVB-T, 2.6.10 kernel, and udev - whereto start?!

[Manu Abraham <manu@kromtek.com>]

linuxtv@whitear.org wrote:
> > Andrew said:
> >
> > Jon,
> >  Ive had the same problems with the latest v4l snapshot locking the
> > machine up, it does not matter whether I specify card=0x71 it still locks 
> > up, I just keep the v4l in the 2.6.10 kernel, that way when I modprobe 
> > bttv it
>
> Ahhh. Going back to the kernel bttv fixed that. Thanks for the tip. I can
> even modprobe bttv without the card and i2c_hardware arguments.
>
> I'm also getting a frontend device recognised now, and udev is creating the
> appropriate nodes, so it's all looking good.
>
>
> > Manu Abraham said:
>
> > It does not matter whether you have Windows, Linux or Solaris. Signal
> > strength is independent of OS. What you see under Windows is a gimmick,
> > ie, if there is a channel lock, show display bar > 80%. that's all in
> > the strength inicator, even though under Linux, we don't have a
> > graduated scale, to show the actual strength. Nothing to get upset.
>
> Manu, sorry, that was just a bit of frustration showing through ;-)
That's okay, even sometimes i also think i would snap the card into 2
pieces.

> My comment regarding signal strength was more anecdotal: under Windows, I
> can watch three of five channels without any artefacts. There are two
> channels that it just won't tune. Under Linux, if I run dvbscan, it only
> picks up two of the five channels.
Zig-Zag scan causing problems ?

> I appreciate that signal strength won't change. The card's in a different
> PC, with a different OS, and different drivers, so I guess there are a
> number of variables there.
No, the drivers have got nothing to do with that except for the external
tuning app. (szap in this case, i think the zig-zag scan requires a
larger signal strength..)

Even if you compare the Windows app/driver code, it is moreor less
similar except for the Windows interface part..

You have a VCR kind of application there. That's the only difference i
have seen, even on a line to line basis..

Regards,
Manu