# Failure to Start the Java-based GUI

### Symptom <a href="#failstostartthejava-basedgui-symptom" id="failstostartthejava-basedgui-symptom"></a>

* You are starting SID-Refresh™ on Linux with the Java-based GUI, and this error appears:

*Exception in thread "main" java.lang.UnsatisfiedLinkError: /usr/java8\_64/jre/lib/ppc64/libawt\_xawt.so (Could not load module /usr/java8\_64/jre/lib/ppc64/libawt\_xawt.so.*

*Dependent module /usr/lib/libXrender.a(shr\_64.o) could not be loaded.*

*Member shr\_64.o is not found in archive*\
\&#xNAN;*Could not load module /usr/java8\_64/jre/lib/ppc64/libawt\_xawt.so.*

*Dependent module /usr/java8\_64/jre/lib/ppc64/libawt\_xawt.so could not be loaded.)*

### Environment <a href="#failstostartthejava-basedgui-environment" id="failstostartthejava-basedgui-environment"></a>

* Linux/Unix Systems

### Cause <a href="#failstostartthejava-basedgui-cause" id="failstostartthejava-basedgui-cause"></a>

* The error is caused by the missing library libXtst.so.6
* The library should be /usr/lib64/libXtst.so.6 (which is a link to /usr/lib64/libXtst.so.6.1.0 ):

*server1:\~ # ls -al /usr/lib64 | grep libXtst.so*\
*lrwxrwxrwx 1 root root 16 Apr 20 00:14 libXtst.so.6 -> libXtst.so.6.1.0 -rwxr-xr-x 1 root root 23016 Nov 10 2016 libXtst.so.6.1.0*\
*server1:\~ #*

### Resolution <a href="#failstostartthejava-basedgui-resolution" id="failstostartthejava-basedgui-resolution"></a>

If neither file is available, install the OS package that contains them:

* On RHEL (6 and 7): yum install libXtst
* On SLES11: zypper install xorg-x11-libs
* On SLES12: zypper install libXtst6