On Solaris, when a Canvas is created using a non-default GraphicsConfiguration
object the following exception is generated:

Exception in thread "main" java.lang.IllegalMonitorStateException: current thread not owner
        at sun.awt.motif.MCanvasPeer.create(Native Method)
        at sun.awt.motif.MComponentPeer.init(Compiled Code)
        at sun.awt.motif.MComponentPeer.<init>(Compiled Code)
        at sun.awt.motif.MCanvasPeer.<init>(Compiled Code)
        at sun.awt.motif.MToolkit.createCanvas(Compiled Code)
        at java.awt.Canvas.addNotify(Compiled Code)
        at TestCanvas.addNotify(Compiled Code)
        at java.awt.Container.addNotify(Compiled Code)
        at java.awt.Window.addNotify(Compiled Code)
        at java.awt.Frame.addNotify(Compiled Code)
        at java.awt.Window.show(Compiled Code)
        at gfx.main(Compiled Code)

The attached test program demonstrates the problem. Run the program and it will
display the list of X11GraphicsConfigs available on the system and then the
program will create a window using the default X11GraphicsConfig object (by
passing null to the Canvas(GraphicsConfiguration) constructor.

Now run the program and give it the visualID (the "vis" parameter printed for
each Configuration) of any of the X11GraphicsConfig objects except the
first object (the default). The program will either hang or terminate with
the above exception.

 1998-10-16 djp
I have attached a modified verison of the test program that will run under beta4
as well as FCS (oldgfx.java). This program works correctly under beta4-K
but has the same problem described above with the FCS version. The difference
in the two test programs is the oldgfx.java uses the getConfig() method to
create the desired X11GraphicsConfig object while the original test program
(gfx.java) chooses from the list of X11GraphicsConfig's returned from
the GraphicsDevice.getConfigurations() method.