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how to keep /dev/video? and /dev/dsp? consistent

 

 

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ltost at pobox

Dec 18, 2003, 12:30 PM

Post #1 of 2 (508 views)
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how to keep /dev/video? and /dev/dsp? consistent

I'm in the process of setting up a new backend/frontend box. It will have
one analog tuner (supported by btaudio), two M179s, and two sound cards.
What's the best way to make sure everything shows up at the same
/dev/dsp?, /dev/video? after reboots? Should I be using the "add
below/above" statements in /etc/modules.conf so that no matter which
module I load first, it'll load all of the others?

This isn't completely correct syntax but I was thinkign something along
the lines of this in my modules.conf:

add below ivtv msp3400 saa7115 tuner btaudio bttv snd-emu10k1 snd-intel8x0

But I'd have to have an "add below" line for each of the modules
mentioned, correct?

ie.,
add below msp3400 saa7115 tuner btaudio bttv snd-emu10k1 snd-intel8x0
add below saa7115 tuner btaudio bttv snd-emu10k1 snd-intel8x0

etc... ?

--
Lance Tost <ltost [at] pobox>


cmisip at insightbb

Dec 18, 2003, 7:16 PM

Post #2 of 2 (502 views)
Permalink
Re: how to keep /dev/video? and /dev/dsp? consistent [In reply to]

I use pre-install in /etc/modules.conf

i.e.

pre-install "this module" modprobe "that module"

which basically means before you load "this module" load "that module"
first. I use this to daisy chain a bunch of modules, so I dont lose the
/dev/dsp and /dev/video assignments. However, when two devices share
the same module (ex. 2 bttv TV cards), then only ordering of PCI slots
seem to determine the ordering of the devices.

http://cmisip.home.insightbb.com/mythtv.htm




On Thu, 2003-12-18 at 14:30, Lance Tost wrote:
> I'm in the process of setting up a new backend/frontend box. It will have
> one analog tuner (supported by btaudio), two M179s, and two sound cards.
> What's the best way to make sure everything shows up at the same
> /dev/dsp?, /dev/video? after reboots? Should I be using the "add
> below/above" statements in /etc/modules.conf so that no matter which
> module I load first, it'll load all of the others?
>
> This isn't completely correct syntax but I was thinkign something along
> the lines of this in my modules.conf:
>
> add below ivtv msp3400 saa7115 tuner btaudio bttv snd-emu10k1 snd-intel8x0
>
> But I'd have to have an "add below" line for each of the modules
> mentioned, correct?
>
> ie.,
> add below msp3400 saa7115 tuner btaudio bttv snd-emu10k1 snd-intel8x0
> add below saa7115 tuner btaudio bttv snd-emu10k1 snd-intel8x0
>
> etc... ?

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