Dual / Triple / Quad Monitors

On launching the RepRap software I get the following error:

"Error in the main GUI: java.lang.IllegalArgumentException: adding a container to a container on a different GraphicsDevice"

Disabling multiple monitors fixes the error, so likely a software bug not supporting multiple monitors. Is there a better place to post this?

Once you've run it with multiple monitors disabled and positioned all windows to be on the screen you can then reactivate multiple monitors and it will then start properly in multiple monitor mode.

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Bob Morrison
Wörth am Rhein, Germany
"Luke, use the source!"
BLOG - PHOTOS - Thingiverse

No matter how much I muck around with turning extra monitors on and off, it won't start properly in multi-monitor mode.

Could someone more versed in the Java black arts look into this posting I found and see if the workaround described therein is applicable to the RepRap Host software?...

Make sure all windows are on the main monitor.
Do this by using single monitor mode - run the RepRap Host software and position all windows within the main window.
End the software and reactivate mult-monitor mode.
Then it should work.

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Bob Morrison
Wörth am Rhein, Germany
"Luke, use the source!"
BLOG - PHOTOS - Thingiverse

Nope, this kludge is not working for me. (I guess I should mention I'm using Windows 7 on this system.) The window positions and sizes are not getting remembered upon repeated runs of the host software even when the extra monitors aren't enabled yet, anyway.

I am having the same problem running on Vista. It always works with one monitor disabled, never with both running (no matter how many times I reposition, exit, restart etc.). It's pretty annoying.

Hmmm...

Don't know what to suggest, I am also running under 32-bit Vista and repositioning the windows in single monitor mode fixed the problem for me. Maybe Adrian can suggest something...

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Bob Morrison
Wörth am Rhein, Germany
"Luke, use the source!"
BLOG - PHOTOS - Thingiverse

On those of you for whom the "kludge" does not work, check your monitor identities: See if monitor 1 is to the right of monitor 2, or if Monitor 1 is NOT your "primary" monitor (i.e. the one with the Taskbar on it).
On my system 2 was on the left, 1 on the right, and 2 was the primary. I was unable to start up the reprap app.
When I changed the default monitor to 1 (which moved my taskbar to the right-hand monitor), the app started up fine.
The Console always appeared on the "default" monitor. The 3D viewer always appeared on monitor 1.

The idea came to me when I saw suspect code in Panel3D.createCanvas3D:

		GraphicsDevice gd[] = GraphicsEnvironment.getLocalGraphicsEnvironment().getScreenDevices();
		
		Canvas3D c3d = new Canvas3D(gd[0].getBestConfiguration(gc3D));

I assume gd[0] is just grabbing display 1.
Perhaps it should be finding the display appropriate to the main frame that will ultimately contain it instead...??

-Kevin