DisplayLink Forum - View Single Post

npgall · 09-06-2011, 09:11 PM

I'm using Java apps on 2x DisplayLink screens on Lion at the moment and I've not had any specific problems with Java apps. I'm a Java software developer so mostly I use IntelliJ IDEA, and of course software that I write myself. I'm on a 2011 MacBook Air 11".

The only thing I could think of is the Java app you are using might be using OpenGL for graphics acceleration? DisplayLink does not support OpenGL hardware acceleration AFAIK.

There is some documentation on enabling/disabling OpenGL acceleration in Java apps here: http://download.oracle.com/javase/6/...flags.html#all

...HOWEVER that documentation is for the Oracle version of Java, whereas Apple currently supply their own version of Java for Mac OS X. I'm not sure if there is a similar setting to enable/disable OpenGL for Apple's Java on OS X.

In fact if your app uses hardware acceleration, it might be up to the app to use or not use OpenGL, rather than a setting you could configure in the OS. Check your app for an option to disable use of OpenGL/hardware acceleration.

Does the app only crash when it's running on the DisplayLink screen? Paste the error from the Java app.

09-06-2011, 09:11 PM	#3
npgall Junior Member Join Date: Sep 2011 Posts: 7	I'm using Java apps on 2x DisplayLink screens on Lion at the moment and I've not had any specific problems with Java apps. I'm a Java software developer so mostly I use IntelliJ IDEA, and of course software that I write myself. I'm on a 2011 MacBook Air 11". The only thing I could think of is the Java app you are using might be using OpenGL for graphics acceleration? DisplayLink does not support OpenGL hardware acceleration AFAIK. There is some documentation on enabling/disabling OpenGL acceleration in Java apps here: http://download.oracle.com/javase/6/...flags.html#all ...HOWEVER that documentation is for the Oracle version of Java, whereas Apple currently supply their own version of Java for Mac OS X. I'm not sure if there is a similar setting to enable/disable OpenGL for Apple's Java on OS X. In fact if your app uses hardware acceleration, it might be up to the app to use or not use OpenGL, rather than a setting you could configure in the OS. Check your app for an option to disable use of OpenGL/hardware acceleration. Does the app only crash when it's running on the DisplayLink screen? Paste the error from the Java app.