MATLAB printing problem

[subjugater]

I have been expriencing the following errors for a long time when I was trying to print programs or plots by simply clicking the print icon in MATLAB.

================================================== ==================
Exception in thread "AWT-EventQueue-0" java.lang.NullPointerException: null attribute
at sun.print.IPPPrintService.isAttributeValueSupporte d(IPPPrintService.java:1147)
at sun.print.ServiceDialog$OrientationPanel.updateInf o(ServiceDialog.java:2121)
at sun.print.ServiceDialog$PageSetupPanel.updateInfo( ServiceDialog.java:1263)
at sun.print.ServiceDialog.updatePanels(ServiceDialog .java:437)
at sun.print.ServiceDialog.initPrintDialog(ServiceDia log.java:195)
at sun.print.ServiceDialog.<init>(ServiceDialog.java: 124)
at javax.print.ServiceUI.printDialog(ServiceUI.java:1 8
at com.mathworks.widgets.text.print.PrintSettings.sho wPrintDialog(PrintSettings.java:665)
at com.mathworks.mde.cmdwin.XCmdWndView.print(XCmdWnd View.java:1644)
at com.mathworks.mde.cmdwin.CmdWinEditorKit$PrintActi on.actionPerformed(CmdWinEditorKit.java:1359)
at javax.swing.AbstractButton.fireActionPerformed(Abs tractButton.java:1995)
at javax.swing.AbstractButton$Handler.actionPerformed (AbstractButton.java:231
at javax.swing.DefaultButtonModel.fireActionPerformed (DefaultButtonModel.java:387)
at javax.swing.DefaultButtonModel.setPressed(DefaultB uttonModel.java:242)
at javax.swing.AbstractButton.doClick(AbstractButton. java:357)
at com.mathworks.mwswing.plaf.MBasicMenuItemUI.doClic k(MBasicMenuItemUI.java:1142)
at com.mathworks.mwswing.plaf.MBasicMenuItemUI$MouseI nputHandler.mouseReleased(MBasicMenuItemUI.java:96 2)
at java.awt.Component.processMouseEvent(Component.jav a:6041)
at javax.swing.JComponent.processMouseEvent(JComponen t.java:3265)
at java.awt.Component.processEvent(Component.java:580 6)
at java.awt.Container.processEvent(Container.java:205
at java.awt.Component.dispatchEventImpl(Component.jav a:4413)
at java.awt.Container.dispatchEventImpl(Container.jav a:2116)
at java.awt.Component.dispatchEvent(Component.java:42 43)
at java.awt.LightweightDispatcher.retargetMouseEvent( Container.java:4322)
at java.awt.LightweightDispatcher.processMouseEvent(C ontainer.java:3986)
at java.awt.LightweightDispatcher.dispatchEvent(Conta iner.java:3916)
at java.awt.Container.dispatchEventImpl(Container.jav a:2102)
at java.awt.Component.dispatchEvent(Component.java:42 43)
at java.awt.EventQueue.dispatchEvent(EventQueue.java: 599)
at java.awt.EventDispatchThread.pumpOneEventForFilter s(EventDispatchThread.java:273)
at java.awt.EventDispatchThread.pumpEventsForFilter(E ventDispatchThread.java:183)
at java.awt.EventDispatchThread.pumpEventsForHierarch y(EventDispatchThread.java:173)
at java.awt.EventDispatchThread.pumpEvents(EventDispa tchThread.java:16
at java.awt.EventDispatchThread.pumpEvents(EventDispa tchThread.java:160)
at java.awt.EventDispatchThread.run(EventDispatchThre ad.java:121)
================================================== ========================

It seems that this is a java issue. But the thing is that I originally was suffered by the issue like:

-----------------------------------------------------------------------------------------------------------------------------------------------------------------
xxx@ubuntu:~$ matlab
Locking assertion failure. Backtrace:
#0 /usr/lib/libxcb-xlib.so.0 [0xb5581767]
#1 /usr/lib/libxcb-xlib.so.0(xcb_xlib_unlock+0x31) [0xb55818b1]
#2 /usr/lib/libX11.so.6(_XReply+0xfd) [0xb591529d]
#3 /usr/local/matlab75/sys/java/jre/glnx86/jre1.6.0/lib/i386/xawt/libmawt.so [0xaef4922e]
#4 /usr/local/matlab75/sys/java/jre/glnx86/jre1.6.0/lib/i386/xawt/libmawt.so [0xaef27ed7]
#5 /usr/local/matlab75/sys/java/jre/glnx86/jre1.6.0/lib/i386/xawt/libmawt.so [0xaef28188]
#6 /usr/local/matlab75/sys/java/jre/glnx86/jre1.6.0/lib/i386/xawt/libmawt.so(Java_sun_awt_X11GraphicsEnvironment_ini tDisplay+0x2f) [0xaef2848f]
#7 [0xafe1a68e]
#8 [0xafe12e9d]
#9 [0xafe12e9d]
#10 [0xafe10207]
#11 /usr/local/matlab75/sys/java/jre/glnx86/jre1.6.0/lib/i386/client/libjvm.so [0x620967d]
#12 /usr/local/matlab75/sys/java/jre/glnx86/jre1.6.0/lib/i386/client/libjvm.so [0x63057d8]
#13 /usr/local/matlab75/sys/java/jre/glnx86/jre1.6.0/lib/i386/client/libjvm.so [0x6209510]
#14 /usr/local/matlab75/sys/java/jre/glnx86/jre1.6.0/lib/i386/client/libjvm.so(JVM_DoPrivileged+0x34b) [0x625f38b]
#15 /usr/local/matlab75/sys/java/jre/glnx86/jre1.6.0/lib/i386/libjava.so(Java_java_security_AccessController_doP rivileged__Ljava_security_PrivilegedAction_2+0x3d) [0xb1e7c96d]
#16 [0xafe1a68e]
#17 [0xafe12d37]
#18 [0xafe10207]
#19 /usr/local/matlab75/sys/java/jre/glnx86/jre1.6.0/lib/i386/client/libjvm.so [0x620967d]
MATLAB: xcb_xlib.c:82: xcb_xlib_unlock: Assertion `c->xlib.lock' failed.
Aborted (core dumped)
xxx@ubuntu:~$
-----------------------------------------------------------------------------------------------------------------------------------------------------------------

This nasty problem is encountered when I was launching matlab. Now, I have successfully solved this problem by the 2-step way below:

================================================== ===========
1.
Matlab uses a jvm of its own.

adding this

"export MATLAB_JAVA=/usr/lib/jvm/java-6-sun-1.6.0.04/jre"

as first line of $MATLABROOT/bin/matlab .

Makes Matlab use an external jvm (java-6-sun-1.6.0.04 for me).

2.
sudo sed -i 's/XINERAMA/FAKEEXTN/g' /usr/lib/jvm/java-6-sun-1.6.0.04/jre/lib/i386/xawt/libmawt.so
================================================== ============

I am really wondering that what should I do now to make Matlab work properly. I am now utterly comfused. Any comments? Thanks in advance.

BTW, I have searched and read dozens of previous threads regarding this kind of issue. But they did not help too much.

[hubie]

I don't run matlab from ubuntu, but this link (http://ubuntuforums.org/showthread.php?t=608258) might be useful to you (especially the link to another discussion contained within).

[hubie]

I don't run matlab from ubuntu, but this link (http://ubuntuforums.org/showthread.php?t=608258) might be useful to you (especially the link to another discussion contained within).

[subjugater]

I don't run matlab from ubuntu, but this link (http://ubuntuforums.org/showthread.php?t=608258) might be useful to you (especially the link to another discussion contained within).

Thanks. Buddy. I've not read the link you gave. But I appreciate your help. Let me read it now and let you know what I am thinking about it.

[hubie]

Good luck, and if my browser wouldn't hang after I hit "Submit Reply," then maybe you'll only hear me say it once. :)