On Nov 23, 2007, at 4:19 AM, Valerio Schiavoni wrote:
I suppose this is normal (given the current todo list):
Exception in thread "main" java.lang.InternalError: Can't connect to
X11 window server using ':0.0' as the value of the DISPLAY variable.
at sun.awt.X11GraphicsEnvironment.initDisplay(Native Method)
at sun.awt.X11GraphicsEnvironment.access
$100(X11GraphicsEnvironment.java:52)
at sun.awt.X11GraphicsEnvironment$1.run(X11GraphicsEnvironment.java:
155)
at java.security.AccessController.doPrivileged(Native Method)
at
sun.awt.X11GraphicsEnvironment.<clinit>(X11GraphicsEnvironment.java:
131)
at java.lang.Class.forName0(Native Method)
at java.lang.Class.forName(Class.java:169)
at
java
.awt
.GraphicsEnvironment
.getLocalGraphicsEnvironment(GraphicsEnvironment.java:68)
at java.awt.Window.init(Window.java:354)
at java.awt.Window.<init>(Window.java:407)
at java.awt.Frame.<init>(Frame.java:402)
at java.awt.Frame.<init>(Frame.java:367)
at org.jgroups.demos.Topology.<init>(Topology.java:42)
at org.jgroups.demos.Topology.main(Topology.java:223)
X11 is running, tiger.
Are you sure DISPLAY is set? If not, try setting it to ":0.0" or
"localhost:0.0"
AWT's X11 initDisplay calls XOpenDisplay(NULL), which falls back on
the DISPLAY environmental variable.
If DISPLAY is NULL, the error reporting code (responsible for printing
the "Can't connect to ..." message) prints ":0.0", even though that's
not true.
Relevant pieces of the code:
dpy = awt_display = XOpenDisplay(NULL);
if (!dpy) {
jio_snprintf(errmsg,
sizeof(errmsg),
"Can't connect to X11 window server using '%s'
as the value of the DISPLAY variable.",
(getenv("DISPLAY") == NULL) ? ":0.0" :
getenv("DISPLAY"));
JNU_ThrowInternalError(env, errmsg);
return NULL;
}
On Leopard, I believe XOpenDisplay(NULL) launches X11 and Just Works.
-landonf
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