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

Matt Zimmerman mdz at canonical.com
Fri Nov 26 08:34:09 UTC 2004

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.

> 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?

 - mdz

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