[linux-dvb] How to force adaptor order when using 2 DVB cards?

Matthias Schwarzott zzam at gentoo.org
Thu Feb 7 19:40:08 CET 2008


On Donnerstag, 7. Februar 2008, John Drescher wrote:
> On Feb 7, 2008 11:46 AM, Eduard Huguet <eduardhc at gmail.com> wrote:
> > Hi,
> >     I currently have a media center computer set up using Gentoo 64 bit
> > and a Hauppauge Nova-T 500 card (dual DVB-T receiver). Now I'm trying to
> > add a new card (DVB-S), and here my problems begin: not mentioning the
> > experimental state of the driver (this is a different story that doesn't
> > matter now), my problem is that the new card porks the order in which
> > the device nodes were created in /dev. And even worse, the actual order
> > ing schema is different between a cold boot and rebooting:
> >
> > Cold boot:
> >   · DVB:0: DVB-S tuner from Avermedia A700
> >   · DVB:1,2: DVB-T tuners from Nova-T
> >
> > Reboot:
> >   · DVB:0: 1st DVB-T tuner from Nova-T
> >   · DVB:1: DVB-S tuner from A700
> >   · DVB:2: 2nd DVB-T tuner from Nova-T
> >
> > I guess that on a cold boot the Nova-T 500 takes longer to initialize
> > (due to the firmware being loaded), so its adaptors gets both created
> > later.
> >
> > Is there any way to avoid this? My MythTV setup currently expects to
> > find the 2 Nova-T 500 adaptors on DVB:0 and DVB:1, and In expected the
> > new DVB-S adaptor to be created as DVB:2. However, it seems this is not
> > the case.
> >
> > Is there any way to force the numbering schema or the 2 adaptors?
>
> Create a udev rule.
>
> http://reactivated.net/writing_udev_rules.html
>
More people have tried this for dvb and failed as it seems. That would require 
something like persistent-net.

I suggest you first try blacklisting the modules like described here:
http://www.gentoo.org/doc/en/udev-guide.xml

Matthias

-- 
Matthias Schwarzott (zzam)



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