NOTICE: This version of the NSF Unidata web site (archive.unidata.ucar.edu) is no longer being updated.
Current content can be found at unidata.ucar.edu.

To learn about what's going on, see About the Archive Site.

[idvusers] IDV with isl; headless; by user apache ; gets Canvas3D: null GraphicsConfiguration

  • To: idvusers@xxxxxxxxxxxxxxxx
  • Subject: [idvusers] IDV with isl; headless; by user apache ; gets Canvas3D: null GraphicsConfiguration
  • From: Stuart Wier <wier@xxxxxxxxxx>
  • Date: Tue, 08 Dec 2009 11:24:50 -0700
Running the IDV on Linux with an isl file, as user apache, on a headless web server, to make an image file of display gets this error: 

ERROR: Creating display master
Canvas3D: null GraphicsConfiguration
java.lang.NullPointerException: Canvas3D: null GraphicsConfiguration
        at 
javax.media.j3d.Canvas3D.checkForValidGraphicsConfig(Canvas3D.java:982)
        at javax.media.j3d.Canvas3D.<init>(Canvas3D.java:1051)
        at visad.java3d.VisADCanvasJ3D.<init>(VisADCanvasJ3D.java:211)
        at visad.java3d.DisplayImplJ3D.initialize(DisplayImplJ3D.java:405)

The process's non-error output is:
Tue Dec 08 11:14:13 MST 2009: Loading bundle: 
/state/partition1/unavco/tomoserver/MITP_generic_plan_display.xidv
Tue Dec 08 11:14:16 MST 2009: Waiting for displays to render
Tue Dec 08 11:14:17 MST 2009: Done waiting for displays to render

The command is
/state/partition1/unavco/idv27/jre/bin/java -Xmx1200m -Didv.enableStereo=false -jar /state/partition1/unavco/idv27/idv.jar -userpath /state/partition1/unavco/tomoserver/IDV/DefaultIdv /state/partition1/unavco/tomoserver/working_apache.isl >> isloutput 2>islerrors 

Running exactly the same command in the same directory by a regular user, not 
apache, makes the image with no error.

Looks like apache and java3D don't get along somehow.

Any ideas will be appreciated.

Stuart