Installation problem under Linux - Processing Forum

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Integration and Hardware

dfkettle

Installation problem under Linux

in Integration and Hardware • 3 years ago

HI!

I'm trying to install the latest version of Processing (1.2.1) under Linux (EasyPeasy, based on Ubuntu), along with JDK 1.6. I downloaded the tar file and extracted the contents, but when I try to start Processing I get the error message below. I added an "echo" command to the start-up script to display the value of CLASSPATH just before starting it up (ie, the last line in the script):

/usr/bin/processing-1.2.1/java/lib/rt.jar:/usr/bin/processing-1.2.1/java/lib/tools.jar:/usr/bin/processing-1.2.1/lib/ant-launcher.jar:/usr/bin/processing-1.2.1/lib/ant.jar:/usr/bin/processing-1.2.1/lib/antlr.jar:/usr/bin/processing-1.2.1/lib/core.jar:/usr/bin/processing-1.2.1/lib/ecj.jar:/usr/bin/processing-1.2.1/lib/jna.jar:/usr/bin/processing-1.2.1/lib/pde.jar
Exception in thread "main" java.lang.UnsatisfiedLinkError: Can't load library: /usr/lib/jvm/java-6-openjdk/jre/lib/i386/xawt/libmawt.so
    at java.lang.ClassLoader.loadLibrary(ClassLoader.java:1649)
    at java.lang.Runtime.load0(Runtime.java:787)
    at java.lang.System.load(System.java:1022)
    at java.lang.ClassLoader$NativeLibrary.load(Native Method)
    at java.lang.ClassLoader.loadLibrary0(ClassLoader.java:1750)
    at java.lang.ClassLoader.loadLibrary(ClassLoader.java:1667)
    at java.lang.Runtime.loadLibrary0(Runtime.java:840)
    at java.lang.System.loadLibrary(System.java:1047)
    at sun.security.action.LoadLibraryAction.run(LoadLibraryAction.java:67)
    at sun.security.action.LoadLibraryAction.run(LoadLibraryAction.java:47)
    at java.security.AccessController.doPrivileged(Native Method)
    at java.awt.Toolkit.loadLibraries(Toolkit.java:1614)
    at java.awt.Toolkit.<clinit>(Toolkit.java:1636)
    at processing.app.Base.<clinit>(Base.java:406)
Could not find the main class: processing.app.Base. Program will exit.

Am I using an unsupported version of Java, or is Processing not installed properly, or is something missing from CLASSPATH? I'm not sure where to find 'processing.app.Base', which seems to be the cause of the problem, according to the message.

Thanks.

3

Replies(17)

kooogy

Re: Installation problem under Linux

3 years ago

"/usr/lib/jvm/java-6-openjdk/jre/lib/i386/xawt/libmawt.so"

use sun java, not the openjdk version. and set $JAVA_HOME. and add $JAVA_HOME/bin to your path.

and chmod +x the processing script.

dfkettle

Re: Installation problem under Linux

3 years ago

Thanks, I'm making some progress now. I did as you suggested, I uninstalled openjdk, installed Sun's jdk and set the environment variables as you described. Processing is now starting up, but it immediately gets into some sort of loop. It opens a default sketch window ('sketch_sep19a'), but keeps erasing the window and redrawing it several times a second. I'm unable to do anything except stop the program by closing the main window.

I added some more echo statements to the script to display all the environment variables used by the script before starting up Processing. Here are the displayed values:

PATH=/usr/bin/processing-1.2.1/java/bin:/usr/bin/jdk1.6.0_21/bin:/home/david/bin:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/games
CLASSPATH=/usr/bin/processing-1.2.1/java/lib/rt.jar:/usr/bin/processing-1.2.1/java/lib/tools.jar:/usr/bin/processing-1.2.1/lib/ant-launcher.jar:/usr/bin/processing-1.2.1/lib/ant.jar:/usr/bin/processing-1.2.1/lib/antlr.jar:/usr/bin/processing-1.2.1/lib/core.jar:/usr/bin/processing-1.2.1/lib/ecj.jar:/usr/bin/processing-1.2.1/lib/jna.jar:/usr/bin/processing-1.2.1/lib/pde.jar
JAVA_HOME=/usr/bin/jdk1.6.0_21
JDKLIBS=rt.jar tools.jar
SKETCH=
APPDIR=/usr/bin/processing-1.2.1
JDKDIR=/usr/bin/processing-1.2.1/java

Any ideas? Could it have something to do with the order in the PATH or CLASSPATH variables? I've installed Processing under Windows before, but installation seems a little more complicated under Linux. Maybe that's to be expected, though.

Thanks for your help.

kooogy

Re: Installation problem under Linux

3 years ago

i think that's using the bundled JDK in preference to the sun JDK - see PATH. i set up ${JAVA_HOME}/bin first. but i think the processing script may add things to it.

i don't know anything about the bundled jdk (and am not in a position to check currently). JDKDIR certainly isn't standard linux though, so i guess that's something the processing bash file is adding. if i remember i'll post again tonight with my laptop's setup.

are you using compiz? 3d desktop effects? a lot of people have problems with these when running opengl sketches. nobody has reported a problem with an empty sketch though.

kooogy

Re: Installation problem under Linux

3 years ago

JAVA_HOME=/opt/java

PWD=/opt/processing-1.2.1

PATH= \
      /opt/processing-1.2.1/java/bin: \
      /opt/java/bin: \
      /home/koala/bin: \
      /usr/local/sbin: \
      /usr/local/bin: \
      /usr/sbin: \
      /usr/bin: \
      /sbin: \
      /bin: \
      /usr/games: \
      /home/koala/bin

CLASSPATH= \
      /opt/processing-1.2.1/java/lib/rt.jar: \
      /opt/processing-1.2.1/java/lib/tools.jar: \
      /opt/processing-1.2.1/lib/ant-launcher.jar: \
      /opt/processing-1.2.1/lib/ant.jar: \
      /opt/processing-1.2.1/lib/antlr.jar: \
       /opt/processing-1.2.1/lib/core.jar: \
       /opt/processing-1.2.1/lib/ecj.jar: \
      /opt/processing-1.2.1/lib/jna.jar: \
      /opt/processing-1.2.1/lib/pde.jar

that runs fine and is using the bundle java. i am running it from within /opt/processing-1.2.1 (i have a bash script that does it for me:
cd /opt/processing-1.2.1
./processing $*
)

dfkettle

Re: Installation problem under Linux

3 years ago

The order seems to be the same for PATH and CLASSPATH. The last four variables are set by the start-up script before starting the program in the last line of the script. I'm also trying to run it from the Processing install directory (although you should be able to run it from anywhere if it's installed properly, shouldn't you?).

I'm not using 'compiz' or any of the other things you mentioned. In fact, I'm not using anything yet, because I'm starting it without passing it the name of any sketch. So it should start with an empty sketch named 'sketch_mmmdda', where 'mmm' is the current month, 'dd' is the current day, and 'a' is 'a' (or 'b' or 'c' etc.).

The only other thing I can think of is that we're using different versions of the JDK. I'm using 1.6.0_21. Which version are you using?

kooogy

Re: Installation problem under Linux

3 years ago

dunno, i am at work, laptop is at home.

but, from the above, we aren't using the usual jdk but the bundled version - it's in all the paths.

(and compiz isn't a processing thing, it's the accelerated 3d graphics X server desktop thing, part of recent linux distros and eneabled when you choose '3d desktop effects'. but it uses opengl to display the desktop, which causes confusion when trying to use opengl in sketches)

anything in your x server logs? anything in /var/log/messages? graphics card? drivers?

dfkettle

Re: Installation problem under Linux

3 years ago

I don't believe I'm using "compiz" (I'd never heard of it before), or selected "3D desktop effects" myself. Maybe it defaulted to 3D when I installed EasyPeasy, but the desktop doesn't look very 3D-ish to me. Besides, I'm not having display problems with any other applications.

I'll check the logs when I get home (although I'm not sure where to look for them, I'm not a Linux expert). I didn't install any drivers myself, just what was installed by default when I installed EasyPeasy about a week ago.

Does Processing use Swing or AWT? I'm still thinking there may be some dependency on the installed Sun JDK, even though the bundled JDK is specified in the PATH and CLASSPATH variables (JAVA_HOME is still pointing to the Sun JDK, and I'm not sure which one JDKLIBS is pointing to for rt.jar and tools.jar).

Are you running EasyPeasy on an Asus as well? Maybe the problem is specific to EasyPeasy and/or Asus netbooks. So far, you're the only person to reply to my question.

Thanks again.

kooogy

Re: Installation problem under Linux

3 years ago

all system logs are under /var/log tree on linux. you might need to be root to read some of them as they may contain sensitive information.

(running standard ubuntu, koala, 32bit on an acer.)

if you think it's EasyPeasy related then maybe their forums will be more helpful.

dfkettle

Re: Installation problem under Linux

3 years ago

I found dozens of log files. I looked in a few of them, including 'messages', but couldn't find anything that seemed to be related to Processing (judging by the timestamps and the contents). It's a little bit like looking for a needle in a haystack, though. However, I really don't think it's a problem with EasyPeasy or Asus (I was grasping at straws, really).

I'll try posting something on the EasyPeasy forum, but I don't know how many people on that forum would be using Processing, and I still think it's a Java problem, because the main window (with 'File', 'Edit', 'Sketch', 'Tools' and 'Help' in the menu bar) displays OK, it's the child window for the sketch that's flashing on and off. Do you know off-hand whether Processing uses Swing or AWT internally?

kooogy

Re: Re: Installation problem under Linux

3 years ago

> but I don't know how many people on that forum would be using Processing

and how many people here are using your hardware? at least you might find someone there that could install it and test it.

don't know about swing or awt. don't know how you'd check either. (with c it'd just be a case of ldd...)

kooogy

Re: Re: Installation problem under Linux

3 years ago

ha, someone elsewhere suggested using lsof (list open files)

five:koala> lsof | grep jar | sort -k 9 | sed "s:.* /:/:" | uniq
/home/common/sketchbook/libraries/jmcvideo/library/jmcvideo.jar
/home/common/sketchbook/libraries/simpleML/library/simpleML.jar
/home/common/sketchbook/tools/BezierTool/tool/BezierEditorTool.jar
/opt/jdk1.6.0_16/jre/lib/resources.jar
/opt/jdk1.6.0_16/jre/lib/rt.jar
/opt/processing-1.2.1/java/lib/rt.jar
/opt/processing-1.2.1/java/lib/tools.jar
/opt/processing-1.2.1/lib/ant.jar
/opt/processing-1.2.1/lib/ant-launcher.jar
/opt/processing-1.2.1/lib/antlr.jar
/opt/processing-1.2.1/lib/core.jar
/opt/processing-1.2.1/lib/ecj.jar
/opt/processing-1.2.1/lib/jna.jar
/opt/processing-1.2.1/lib/pde.jar
/opt/processing-1.2.1/libraries/dxf/library/dxf.jar
/opt/processing-1.2.1/libraries/javascript/library/javascript.jar
/opt/processing-1.2.1/libraries/minim/library/jl1.0.jar
/opt/processing-1.2.1/libraries/minim/library/jsminim.jar
/opt/processing-1.2.1/libraries/minim/library/minim.jar
/opt/processing-1.2.1/libraries/minim/library/minim-spi.jar
/opt/processing-1.2.1/libraries/minim/library/mp3spi1.9.4.jar
/opt/processing-1.2.1/libraries/minim/library/tritonus_aos.jar
/opt/processing-1.2.1/libraries/minim/library/tritonus_share.jar
/opt/processing-1.2.1/libraries/net/library/net.jar
/opt/processing-1.2.1/libraries/opengl/library/gluegen-rt.jar
/opt/processing-1.2.1/libraries/opengl/library/gluegen-rt-natives-linux-amd64.jar
/opt/processing-1.2.1/libraries/opengl/library/gluegen-rt-natives-linux-i586.jar
/opt/processing-1.2.1/libraries/opengl/library/gluegen-rt-natives-macosx-ppc.jar
/opt/processing-1.2.1/libraries/opengl/library/gluegen-rt-natives-macosx-universal.jar
/opt/processing-1.2.1/libraries/opengl/library/gluegen-rt-natives-windows-amd64.jar
/opt/processing-1.2.1/libraries/opengl/library/gluegen-rt-natives-windows-i586.jar
/opt/processing-1.2.1/libraries/opengl/library/jogl.jar
/opt/processing-1.2.1/libraries/opengl/library/jogl-natives-linux-amd64.jar
/opt/processing-1.2.1/libraries/opengl/library/jogl-natives-linux-i586.jar
/opt/processing-1.2.1/libraries/opengl/library/jogl-natives-macosx-ppc.jar
/opt/processing-1.2.1/libraries/opengl/library/jogl-natives-macosx-universal.jar
/opt/processing-1.2.1/libraries/opengl/library/jogl-natives-windows-amd64.jar
/opt/processing-1.2.1/libraries/opengl/library/jogl-natives-windows-i586.jar
/opt/processing-1.2.1/libraries/opengl/library/opengl.jar
/opt/processing-1.2.1/libraries/pdf/library/itext.jar
/opt/processing-1.2.1/libraries/pdf/library/pdf.jar
/opt/processing-1.2.1/libraries/serial/library/RXTXcomm.jar
/opt/processing-1.2.1/libraries/serial/library/serial.jar
/opt/processing-1.2.1/libraries/video/library/video.jar

um, i can see minim (sound) libraries, opengl libraires (including windows and mac versions!) and BezierToolEditor on top of the standard stuff. no swing or awt though.

edit:
/home/opt/jdk1.6.0_16/jre/lib/resources.jar has a bunch of swing classes in it.

dfkettle

Re: Installation problem under Linux

3 years ago

Thanks, I'll try that when I get a chance. I'm not sure that it will answer the question, but I'm thinking it might provide a clue. I notice that you're using a slightly older version of JDK (1.6.0_16 instead of 1.6.0_21). Think that might have something to do with it?

The reason I posted here is because I think it's a Processing or Java problem and not an EasyPeasy or Asus problem. I had Processing installed on my Asus under Xandros Linux, and it worked fine. But about a week ago, I installed EasyPeasy and tried to re-install Processing, which is when it broke. I could re-install Xandros if I can't solve this problem, but on the whole, I like EasyPeasy much better than Xandros (at least on the Asus). I might try eeeUbuntu.

Apart from that, the EasyPeasy forum doesn't seem that active. I posted a couple of other questions about some hardware issues and nobody ever replied.

kooogy

Re: Installation problem under Linux

3 years ago

1.6.0_21 is fine too. just installed it.

> The reason I posted here is because I think it's a Processing or Java problem and not an EasyPeasy or Asus problem.

> I had Processing installed on my Asus under Xandros Linux, and it worked fine.
> But about a week ago, I installed EasyPeasy and tried to re-install Processing, which is when it broke.

does not compute. 8)

dfkettle

Re: Installation problem under Linux

3 years ago

I still don't know what's causing the problem, but I found a work-around. It seems the problem only occurs when the main Processing window is maximized. If I resize the window so it doesn't fill the screen, then it displays properly.

I just discovered this by accident, after almost giving up. I was having a problem with another application written in Java, and although the symptoms aren't identical, it also has display problems, but only when the window is maximized. So maybe it is a problem in EasyPeasy after all, but I don't know why it only seems to affect programs written in Java. I doubt that it's a problem with the installed JDK, although I could be wrong.

Very strange.

drumwhore

drumwhore

Re: Installation problem under Linux

3 years ago

I'm also experiencing what it seems to be the same problem on my Samsung N220. I first tried Ubuntu Netbook Edition 10.04 from a bootable USB stick, where I installed Open JDK and Processing, and it was running smoothly (except a warning popup from Processing at startup concerning Open JDK).
So I installed Ubuntu, then sun-java6-jdk and Processing. Now the window keeps refreshing and no action is possible but closing the program.

Anyway, I'll give a try to your workaround as soon as I get home ;)

fabrica23

fabrica23

Re: Installation problem under Linux

3 years ago

I had the same java flickering window problem on my EEEPC 901 with easypeasy 1.6 (ubuntu 10.04 UNE) and sun-java6-jdk. It seems that Java app windows don't like Maximus, ubuntu's window manager, that forces all app windows to maximise on opening. Not understanding enough linux etc to actually fix the problem I instead went in to gconf-editor and added "processing" to the /apps/maximus/exclude_class key. Processing now opens (and works) without flickering but with an unmaximised window which can now be manually maximised without flickering.

dfkettle

Re: Installation problem under Linux

3 years ago

Thanks. I don't know if the problem is in EasyPeasy or Maximus, but I'll post a message on the EasyPeasy board. I don't know who maintains Maximus, but if someone knows how to contact them, I'll let them know as well.

Thanks for the tip about editing /apps/maximu/exclude_class.

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