Missing /dev/dsp devices in the udev files system.

[laust. ladefoged]

On Fri, 26 Nov 2004 00:34:09 -0800, Matt Zimmerman <mdz at canonical.com> wrote:
> On Thu, Nov 25, 2004 at 10:33:54PM +0100, Laust M. Ladefoged wrote:
> 
> 
> 
> > I am missing /dev/dsp devices for my two bt878 tv tuner cards. I
> > need /dev/dsp1 and /dev/dsp2 to get the raw audio for MythTV.
> >
> > It was working with with a Warty prerelease but when I apt-get dist-
> > upgraded the /dev/dsp1 and /dev/dsp2 devices dissapeared.
> >
> > This probably has something to do with the introduction of the udev
> > filesystem, but I can find no information on how to configure the
> > btaudio module to create the devices in the udev file system - maybe
> > they should not even be called /dev/dsp anymor?
> 
> Ubuntu has used udev by default from a very early stage (before any public
> release).  The device naming has not changed either.
> 
> Are you really using the btaudio module?  This is an obsolete OSS module,
> and you should be using snd-bt87x instead.

No, I am using the snd-bt87x - it was a mistake in my initial mail.
Though the btaudio module is also loaded.

> 
> > To verify this problem I have tried to do a barebone install of the
> > Warty prerelease (or release
> > candidate), and before doing apt-get dist-upgrade I had /dev/dsp1 and
> > /dev/dsp2 and /dev/dsp3. After the upgrade I only have /dev/dsp which is
> > the sound card.
> 
> What packages were upgraded during the dist-upgrade?

I do not remember which packages was upgraded - but a lot.

I have since on an identical machine done a barebone install of Warty
prerelease, dist-upgraded to Warty with the same result as described
earlier. The new thing is that I did dist-upgrade to Hoary and now i
have got my /dev/dsp1 and /dev/dsp2 devices back.

I have not yet had time to test that I actually got sound through
these devices, but I certainly hope I will see no further problems.

Do not know what is missing/failing in Warty, so for now I will be
migrating to Hoary shortly to fix this problem on my primary machine.

Thank you for all suggestions - even though we did not nail the problem.

- Laust.