[LAU] Running the guitarix LADSPA plugins on a headless system

Sean Bolton sean at smbolton.com
Sun Feb 17 00:48:10 UTC 2013


Hi Jeremy and Herman,

On Sat Feb 16 2013, Jeremy Jongepier wrote:
> Tried running:
> DSSI_PATH=/usr/lib/ladspa jack-dssi-host
> ladspa_guitarix.so:guitarix-amp ladspa_guitarix.so:guitarix-fx -v -n
> -a
> 
> CPU maxes out and RPi becomes unusable. So I fear I have to rule this 
> option out :(

CPU maxes out on my system also *when there is no input*. As soon as I
feed it some sound, CPU drops to reasonable levels.  Looks like there
may be a denormal problem in ladspa_guitarix.so:guitarix-amp. This was
using guitarix 0.21.0. (I also tried today's guitarix git, and couldn't
reproduce the problem, but I also couldn't get anything but a
clean/bypass sound from the amp plugin, so I don't think I actually
tested it.)

-Sean


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