[LAU] plugins

Kevin Cosgrove kevinc at doink.com
Fri Aug 10 17:23:43 EDT 2007

On 10 August 2007 at 0:55, Ken Restivo <ken at restivo.org> wrote:

> On Fri, Aug 10, 2007 at 12:06:53AM -0700, Kevin Cosgrove wrote:
> > When I use Audacity, why does every plugin show up twice in the 
> > effects list?  Looking on my hard drive it looks like the plugins are 
> > only installed in one place, /usr/lib/ladspa, and they all come from
> > either swh-plugins-0.4.14-1mdk or tap-plugins-0.7.0-2mdk.
> I have this same problem.
> I have this same problem.
> I call it "stuttering plugins".
> I call it "stuttering plugins".


> I was told that it is caused by having /usr/local/lib/ladspa
> set up as a symlink to /usr/lib/ladpsa, but I don't have
> anything in /usr/local/lib/ladspa at all, and it's not a
> symlink, so that can't be it.

I looked for that just now with 'locate ladspa' and found no
such symbolic link.  But, I did find /etc/profile.d/ladspa.csh
and /etc/profile.d/ladspa.sh, each of which set LADSPA_PATH in
the environment.  I had my LADSPA_PATH set to /usr/lib/ladspa/
and I don't set that in my shell's RC files anywhere.  I unset
LADSPA_PATH in my environment and found that now audacity finds
only one copy of each plugin.

> I should point out that the "listplugins" utility only shows
> ONE version of each plugin. It does not stutter.

With LADSPA_PATH set, then listplugins finds one copy of each
plugin.  With LADSPA_PATH unset, then listplugins complains about
that and finds zero plugins.

> Neither does jack-rack seem to stutter. I get one listing for
> each plugin in jack-rack.

I haven't looked with jack-rack.

> However, Ardour2 shows stuttering LADSPA plugins. I guess Audacity does too.

Yes, I've seen that as well.

> I'd love to know how to fix it, but for now it is just mildly annoying.

I don't know that unsetting LADSPA_PATH could be considered a
fix.  But, it does seem to reduce the annoyance.  I say it's not
a fix because I would think a fix would show the right number
of plugins in applications like audacity and with ladspa's own



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