Hi Nick,
   I know it's unlikely, but one other possibility is the sound card
itself. A number of my RME cards (Hammerfall, HDSP 9652) actually have
no mixer elements, meaning they cannot be controlled by Alsamixer, and
so I get the same messages even though the cards work fine with
mplayer, etc. I somehow doubt this is your case but it doesn't hurt to
point out that this message can be normal.

   Are you attempting to run the Gnome sound server? If there a
conflict happening there?

   What sound hardware are you running?

lspci
cat /proc/asound/cards

Good luck,
Mark

On 9/10/05, Nick Rout <[EMAIL PROTECTED]> wrote:
> When I log into gnome I get a dialog with the following message:
> 
> "Sorry, no mixer elements and/or devices found"
> 
> Advcie from google and forums.g.o seems to point to the following likely
> solutions:
> 
> 1. make sure user has ability to do audio - yes I can, and everything I
> run in gnome produces audio output when it should (mplayer, xmms,
> mpg123, xine, whatever)
> 
> 2. run gst-register-0.8 - done it, more than once. Doesn't complain
> about any problems, but makes no difference even after a reboot.
> 
> Thats about a summary of the suggested fixes and the results. I figured
> that the error seemed to be on running gnome-volume-control, so when i
> run it from an xterm I get the following:
> 
> [EMAIL PROTECTED] /home/torrents/nick $ gnome-volume-control
> 
> ** (gnome-volume-control:19921): CRITICAL **: how to remove plugins?
> 
> (gnome-volume-control:19921): GStreamer-CRITICAL **: Factory for
> `ossmixer' has no type. This probably means the plugin wasn't found
> because the registry is broken. The plugin GStreamer was looking for is
> named 'ossaudio' and is expected in file
> '/usr/lib/gstreamer-0.8/libgstossaudio.so'. The registry for this plugin
> is located at '/var/lib/cache/gstreamer-0.8/registry.xml'
> 
> ** (gnome-volume-control:19921): CRITICAL **: how to remove plugins?
> 
> (gnome-volume-control:19921): GStreamer-CRITICAL **: Factory for
> `alsamixer' has no type. This probably means the plugin wasn't found
> because the registry is broken. The plugin GStreamer was looking for is
> named 'alsa' and is expected in file
> '/usr/lib/gstreamer-0.8/libgstalsa.so'. The registry for this plugin is
> located at '/var/lib/cache/gstreamer-0.8/registry.xml'
> 
> 
> OK well it looks like something is missing. I though gst-register-0.8
> was supposed to sort all that out.
> 
> What am I missing or what do I do to fix this? Can I safely
> delete /var/lib/cache/gstreamer-0.8/registry.xml and re-run the register
> program and see if that makes a difference? Or will i break something?
> 
> 
> As sound is in fact working in all apps I use, its not such a worry,
> just a sign that something is broken, and if something is broken it may
> get worse down the track.
> --
> Nick Rout <[EMAIL PROTECTED]>
> 
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> 
>

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