After boot I have two instances of Pure Data application

Question

Raspbian Jessie on Pi 3 headless with VNC on laptop. I use /LXEsession/autostart to have application puredata running after boot. In Terminal with top 2 instances of puredata show up!!

How come?

Anybody an idea about this?

pi@murf:~ $ ps aux | grep puredata  
pi        1120  1.4  0.6  12632  6056 ?        S    13:52   0:01 puredata  
pi        1121  1.4  0.6  12632  5916 ?        S    13:52   0:01 puredata  
pi        1149  0.0  0.0   1912   372 ?        S    13:52   0:00 sh -c TCL_LIBRARY="/usr/lib/puredata/lib/tcl/library" TK_LIBRARY="/usr/lib/puredata/lib/tk/library"   wish "/usr/lib/puredata/tcl//pd-gui.tcl" 5400   
pi        1150  0.0  0.0   1912   364 ?        S    13:52   0:00 sh -c /usr/lib/puredata/bin/pd-watchdog  
pi        1151  0.7  1.3  26416 12676 ?        Sl   13:52   0:01 wish /usr/lib/puredata/tcl//pd-gui.tcl 5400  
pi        1152  0.0  0.0   1840   424 ?        S    13:52   0:00 /usr/lib/puredata/bin/pd-watchdog  
pi        1153  0.0  0.0   1912   364 ?        S    13:52   0:00 sh -c TCL_LIBRARY="/usr/lib/puredata/lib/tcl/library" TK_LIBRARY="/usr/lib/puredata/lib/tk/library"   wish "/usr/lib/puredata/tcl//pd-gui.tcl" 5401   
pi        1154  0.0  0.0   1912   388 ?        S    13:52   0:00 sh -c /usr/lib/puredata/bin/pd-watchdog  
pi        1155  0.0  0.0   1840   380 ?        S    13:52   0:00 /usr/lib/puredata/bin/pd-watchdog  
pi        1156  0.6  1.3  26536 12748 ?        Sl   13:52   0:00 wish /usr/lib/puredata/tcl//pd-gui.tcl 5401  
pi        1420  0.0  0.2   4280  2016 pts/0    S+   13:54   0:00 grep --color=auto puredata

pi@murf:~ $ ps -o pid,ppid,cmd -p 1087 1088
  PID  PPID CMD
 1087   962 puredata
 1088   913 puredata
pi@murf:~ $ pstree -p 962
lxsession(962)─┬─lxpanel(1083)─┬─{gdbus}(1126)
               │               ├─{gmain}(1129)
               │               └─{menu-cache-io}(1244)
               ├─lxpolkit(1080)───{gdbus}(1092)
               ├─openbox(1075)
               ├─pcmanfm(1086)─┬─{gdbus}(1127)
               │               └─{gmain}(1131)
               ├─puredata(1087)─┬─sh(1116)───wish(1119)───{wish}(1133)
               │                └─sh(1117)───pd-watchdog(1118)
               ├─ssh-agent(987)
               ├─{gdbus}(1028)
               └─{gmain}(1065)
pi@murf:~ $ pstree -p 913
lxsession(913)─┬─lxpanel(1084)─┬─{gdbus}(1128)
               │               ├─{gmain}(1135)
               │               └─{menu-cache-io}(1242)
               ├─lxpolkit(1079)───{gdbus}(1091)
               ├─openbox(1074)
               ├─pcmanfm(1085)─┬─{gdbus}(1132)
               │               └─{gmain}(1142)
               ├─puredata(1088)─┬─sh(1120)───wish(1124)───{wish}(1134)
               │                └─sh(1121)───pd-watchdog(1123)
               ├─ssh-agent(953)
               ├─{gdbus}(1025)
               └─{gmain}(1066)

score 1 · Answer 1 · answered Aug 28 '16 at 10:23

Using X11VNC there's indeed no second instance of my app. Another solution seems to be: booting the headless Pi in CLI mode. Then with Tightvncserver there's not a second instance of my app either.

With the little experience i have, i prefer Tightvncserver because with X11VNC the connection too often got unresponsive, making a reboot necessary.

thanks for the assistance rolf

After boot I have two instances of Pure Data application

1 Answers1