Насколько понял, tuxguitar падает вместе с JAVA.
А он точно также ведет при openjdk? Заменить Sun Java на OpenJDK не пробовали?
Попробывал с OpenJDK тоже самое..
$ tuxguitar
#
# A fatal error has been detected by the Java Runtime Environment:
#
# SIGSEGV (0xb) at pc=0x78d040f5, pid=28315, tid=3066960752
#
# JRE version: 6.0_20-b20
# Java VM: OpenJDK Client VM (19.0-b09 mixed mode linux-x86 )
# Derivative: IcedTea6 1.9.4
# Distribution: Custom build (Tue Feb 15 14:43:38 UTC 2011)
# Problematic frame:
# C 0x78d040f5
#
# An error report file with more information is saved as:
# /tmp/hs_err_pid28315.log
#
# If you would like to submit a bug report, please include
# instructions how to reproduce the bug and visit:
#
http://icedtea.classpath.org/bugzilla#
/usr/bin/tuxguitar: line 38: 28315 Аварийный останов ${JAVA} ${VM_ARGS} -cp :${CLASSPATH} -Dtuxguitar.share.path="/usr/share/tuxguitar/" -Djava.library.path="${LD_LIBRARY_PATH}" ${MAINCLASS} "$1" "$2" "$arg"