i found solution to fix it.

pd-l2ork's default exec was:
Exec=pd-l2ork -rt -jack -audiobuf 20 -inchannels 2 -outchannels 2 -alsamidi -mididev 0 %U

to edit this file,
$ sudo nano /usr/share/applications/pd-l2ork.desktop

but if you want to use more outputs, modify this. 
-inchannels 12
-outchaanels 12
etc..

thanks,
jonghyun

On Wed, Jan 20, 2016 at 11:27 PM, Jonghyun Kim <agitato816@gmail.com> wrote:
in addition, it also doesn't store the changes(audio card setup) in preference.

i'm on ubuntu 14.04 64bit.


On Wed, Jan 20, 2016 at 11:21 PM, Jonghyun Kim <agitato816@gmail.com> wrote:
hi list,

in pd-l2ork ver. 20151130 i can't use multiple outputs. i have 8 in 8 out audio interface, and it routes with jack. it works well with other applications, but only pd-l2ork can't grab this.

differing from this, in pd 0.46-7 multiple output works as dac 5,6,7,8,9,10,11,12 and 1, 2 are same as 5, 6.

how can i use multiple output in pd-l2ork?

thanks,
jonghyun