Connection Refusal Error Messages Occur When Trying to Start the MSM GUI

Bug 15568181

Issue: If xhost access control is enabled on the computer on which the MSM GUI is to be displayed, the following Java exception might occur when you start the GUI:

# /var/opt/MegaRaidStorageManager/startupui.sh
Xlib: connection to ":0.0" refused by server
Xlib: No protocol specified
 
Exception in thread "main" java.lang.NoClassDefFoundError: Could not i
nitialize class oracle.awt.X11GraphicsEnvironment
        at java.lang.Class.forName0(Native Method)
        at java.lang.Class.forName(Unknown Source)
        at java.awt.GraphicsEnvironment.getLocalGraphicsEnvironment(Un
known Source)
        at oracle.awt.X11.XToolkit.<clinit>(Unknown Source)
        at java.lang.Class.forName0(Native Method)
        at java.lang.Class.forName(Unknown Source)
        at java.awt.Toolkit$2.run(Unknown Source)
        at java.security.AccessController.doPrivileged(Native Method)
        at java.awt.Toolkit.getDefaultToolkit(Unknown Source)
        at oracle.swing.SwingUtilities2$AATextInfo.getAATextInfo(Unknown 
Source)
        at javax.swing.plaf.metal.MetalLookAndFeel.initComponentDefaul
ts(Unknown Source)
        at javax.swing.plaf.basic.BasicLookAndFeel.getDefaults(Unknown
 Source)
        at javax.swing.plaf.metal.MetalLookAndFeel.getDefaults(Unknown
 Source)
        at javax.swing.UIManager.setLookAndFeel(Unknown Source)
        at javax.swing.UIManager.setLookAndFeel(Unknown Source)
        at javax.swing.UIManager.initializeDefaultLAF(Unknown Source)
        at javax.swing.UIManager.initialize(Unknown Source)
        at javax.swing.UIManager.maybeInitialize(Unknown Source)

Workaround: To avoid this Java exception, do the following:

1. Disable xhost access control by issuing the xhost + command.
2. Log in to the MSM server and set the DISPLAY variable as appropriate for your system.
3. Start the MSM GUI.