Lessons learned: Gephi not starting up

Scenario: When using Ubuntu Trusty (14.04.3LTS) Gephi 0.82 initializes but gets stuck on “Loading Cached Objects”

Workspace 1_318

Solution: The default Gephi startup bash script does not correctly initialize the JAVA path (it uses $jdkhome) The solution is simply to add the following to the beginning of the startup script (~/gephi/bin/gephi)

export JAVA_HOME=/usr/lib/jvm/default-java
jdkhome=$JAVA_HOME

The full script is here:

#!/bin/sh
#
# resolve symlinks
#
#### DV: START BUGFIX ####
export JAVA_HOME=/usr/lib/jvm/default-java
jdkhome=$JAVA_HOME
#### DV: END BUGFIX ####
PRG=$0
while [ -h "$PRG" ]; do
ls=`ls -ld "$PRG"`
link=`expr "$ls" : '^.*-> \(.*\)$' 2>/dev/null`
if expr "$link" : '^/' 2> /dev/null >/dev/null; then
PRG="$link"
else
PRG="`dirname "$PRG"`/$link"
fi
done
progdir=`dirname "$PRG"`
APPNAME=`basename "$PRG"`
if [ -f "$progdir/../etc/$APPNAME".conf ] ; then
. "$progdir/../etc/$APPNAME".conf
fi
# XXX does not correctly deal with spaces in non-userdir params
args=""
case "`uname`" in
Darwin*)
userdir="${default_mac_userdir}"
;;
*)
userdir="${default_userdir}"
;;
esac
while [ $# -gt 0 ] ; do
case "$1" in
–userdir) shift; if [ $# -gt 0 ] ; then userdir="$1"; fi
;;
*) args="$args \"$1\""
;;
esac
shift
done
if [ -f "${userdir}/etc/$APPNAME".conf ] ; then
. "${userdir}/etc/$APPNAME".conf
fi
if [ -n "$jdkhome" -a \! -d "$jdkhome" -a -d "$progdir/../$jdkhome" ]; then
# #74333: permit jdkhome to be defined as relative to app dir
jdkhome="$progdir/../$jdkhome"
fi
readClusters() {
if [ -x /usr/ucb/echo ]; then
echo=/usr/ucb/echo
else
echo=echo
fi
while read X; do
if [ "$X" \!= "" ]; then
$echo "$progdir/../$X"
fi
done
}
clusters=`(cat "$progdir/../etc/$APPNAME".clusters; echo) | readClusters | tr '\012' ':'`
if [ ! -z "$extra_clusters" ] ; then
clusters="$clusters:$extra_clusters"
fi
nbexec=`echo "$progdir"/../platform*/lib/nbexec`
case "`uname`" in
Darwin*)
eval exec sh '"$nbexec"' \
–jdkhome '"$jdkhome"' \
-J-Dcom.apple.mrj.application.apple.menu.about.name='"$APPNAME"' \
-J-Xdock:name='"$APPNAME"' \
'"-J-Xdock:icon=$progdir/../../$APPNAME.icns"' \
–clusters '"$clusters"' \
–userdir '"${userdir}"' \
${default_options} \
"$args"
;;
*)
sh=sh
# #73162: Ubuntu uses the ancient Bourne shell, which does not implement trap well.
if [ -x /bin/bash ]
then
sh=/bin/bash
fi
eval exec $sh '"$nbexec"' \
–jdkhome '"$jdkhome"' \
–clusters '"$clusters"' \
–userdir '"${userdir}"' \
${default_options} \
"$args"
exit 1
;;
esac

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gephi.sh
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