FX fails to launch on linux. Two sample failures:
See JDK-8007410 for reference

One from the java fx launcher tests:
http://aurora.ru.oracle.com/functional/faces/RunDetails.xhtml?names=163778.JDK8-LANGTOOLS-NIGHTLY.jdk-test-tools-Linux32.gatherSysInfo_resubmit0#NONAME_tools/launcher/FXLauncherTest.java

 Exception in thread "main" java.lang.reflect.InvocationTargetException
   at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
   at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
   at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
   at java.lang.reflect.Method.invoke(Method.java:487)
   at sun.launcher.LauncherHelper$FXHelper.main(LauncherHelper.java:751)
  Caused by: java.lang.RuntimeException: java.lang.UnsatisfiedLinkError: /export/home/aurora/sandbox/jdk/jre/lib/i386/libglass.so: libgio-2.0.so.0: cannot open shared object file: No such file or directory
   at com.sun.javafx.tk.quantum.QuantumToolkit.startup(QuantumToolkit.java:329)
   at com.sun.javafx.application.PlatformImpl.startup(PlatformImpl.java:166)
   at com.sun.javafx.application.LauncherImpl.launchApplication1(LauncherImpl.java:335)
   at com.sun.javafx.application.LauncherImpl.access$000(LauncherImpl.java:48)
   at com.sun.javafx.application.LauncherImpl$1.run(LauncherImpl.java:134)
   at java.lang.Thread.run(Thread.java:722)
  Caused by: java.lang.UnsatisfiedLinkError: /export/home/aurora/sandbox/jdk/jre/lib/i386/libglass.so: libgio-2.0.so.0: cannot open shared object file: No such file or directory
   at java.lang.ClassLoader$NativeLibrary.load(Native Method)
   at java.lang.ClassLoader.loadLibrary0(ClassLoader.java:1954)
   at java.lang.ClassLoader.loadLibrary(ClassLoader.java:1843)
   at java.lang.Runtime.load0(Runtime.java:792)
   at java.lang.System.load(System.java:1061)
   at com.sun.glass.utils.NativeLibLoader.loadLibraryFullPath(Unknown Source)
   at com.sun.glass.utils.NativeLibLoader.loadLibraryInternal(Unknown Source)
   at com.sun.glass.utils.NativeLibLoader.loadLibrary(Unknown Source)
   at com.sun.glass.ui.Application.loadNativeLibrary(Unknown Source)
   at com.sun.glass.ui.Application.loadNativeLibrary(Unknown Source)
   at com.sun.glass.ui.gtk.GtkApplication.access$000(Unknown Source)
   at com.sun.glass.ui.gtk.GtkApplication$1.run(Unknown Source)
   at com.sun.glass.ui.gtk.GtkApplication$1.run(Unknown Source)
   at java.security.AccessController.doPrivileged(Native Method)
   at com.sun.glass.ui.gtk.GtkApplication.<clinit>(Unknown Source)
   at com.sun.glass.ui.gtk.GtkPlatformFactory.createApplication(Unknown Source)
   at com.sun.glass.ui.Application.run(Unknown Source)
   at com.sun.javafx.tk.quantum.QuantumToolkit.startup(QuantumToolkit.java:314)
   ... 5 more
++++Test Stack Trace++++
java.lang.Throwable: current stack of the test
  TestHelper.doExec(TestHelper.java:481)
  TestHelper.doExec(TestHelper.java:442)
  FXLauncherTest.testBasicFXApp(FXLauncherTest.java:244)
  FXLauncherTest.testBasicFXApp(FXLauncherTest.java:219)
  sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
  sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
  sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
  java.lang.reflect.Method.invoke(Method.java:487)
  TestHelper.run(TestHelper.java:191)
  FXLauncherTest.main(FXLauncherTest.java:396)
  sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
  sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
  sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
  java.lang.reflect.Method.invoke(Method.java:487)
  com.sun.javatest.regtest.MainWrapper$MainThread.run(MainWrapper.java:94)
  java.lang.Thread.run(Thread.java:722)
++++End of Test Info++++

Here's another crash of the same from a different run with a crash:
Executed command: /Users/aurora/sandbox/jdk/bin/java -cp /Users/aurora/sandbox/gresults/testoutput/jdk_tools/JTwork/scratch/fxtest.jar helloworld.ExtHello one two

###TestError###: test did not return 0 exit value
++++Begin Test Info++++
Test Status: FAIL
++++Test Environment++++
  XFILESEARCHPATH=/usr/dt/app-defaults/%L/Dt
  CLASSPATH=/Users/aurora/sandbox/jtreg/lib/javatest.jar:/Users/aurora/sandbox/jtreg/lib/jtreg.jar:/Users/aurora/sandbox/jdk/lib/tools.jar
  PATH=/bin:/usr/bin
  NLSPATH=/usr/dt/lib/nls/msg/%L/%N.cat
  TZ=PST8PDT
  DISPLAY=sc11152338.us.oracle.com:1
  LANG=en_US.UTF-8
  HOME=/Users/aurora
++++Test Output++++
  Xlib: extension "GLX" missing on display "sc11152338.us.oracle.com:1.0".
  #
  # A fatal error has been detected by the Java Runtime Environment:
  #
  # SIGSEGV (0xb) at pc=0x00d4a18b, pid=379, tid=1832033168
  #
  # JRE version: Java(TM) SE Runtime Environment (8.0) (build 1.8.0-ea-langtools-nightly-h3131-20130131-b75-b00)
  # Java VM: Java HotSpot(TM) Server VM (25.0-b17 mixed mode linux-x86 )
  # Problematic frame:
  # C [libGL.so.1+0x1618b] glXGetFBConfigs+0x2b
  #
  # Failed to write core dump. Core dumps have been disabled. To enable core dumping, try "ulimit -c unlimited" before starting Java again
  #
  # An error report file with more information is saved as:
  # /Users/aurora/sandbox/gresults/testoutput/jdk_tools/JTwork/scratch/hs_err_pid379.log
  Phoning home...
  Using server: 10.161.186.18, port 4711
  #
  # If you would like to submit a bug report, please visit:
  # http://bugreport.sun.com/bugreport/crash.jsp
  # The crash happened outside the Java Virtual Machine in native code.
  # See problematic frame for where to report the bug.
  #
++++Test Stack Trace++++
java.lang.Throwable: current stack of the test
  TestHelper.doExec(TestHelper.java:481)
  TestHelper.doExec(TestHelper.java:442)
  FXLauncherTest.testExtendFXApp(FXLauncherTest.java:295)
  FXLauncherTest.testExtendFXApp(FXLauncherTest.java:269)
  sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
  sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
  sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
  java.lang.reflect.Method.invoke(Method.java:487)
  TestHelper.run(TestHelper.java:191)
  FXLauncherTest.main(FXLauncherTest.java:396)
  sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
  sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
  sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
  java.lang.reflect.Method.invoke(Method.java:487)
  com.sun.javatest.regtest.MainAction$SameVMRunnable.run(MainAction.java:706)
  java.lang.Thread.run(Thread.java:722)
++++End of Test Info++++