Super User is a question and answer site for computer enthusiasts and power users. Join them; it only takes a minute:

Sign up
Here's how it works:
  1. Anybody can ask a question
  2. Anybody can answer
  3. The best answers are voted up and rise to the top

I have some issues with my graphics card and I want to disable Hardware Acceleration for java apps. Everything that uses HA is displayed blurry.

I've seen some tutorials on how to set this parameter -Dsun.java2d.d3d=false

The problem is that the Java Control panel itself is using hardware acceleration and I cannot see anything in order to add this parameter.

Edit: Went to java control panel in safe mode, added that parameter and problem continues..

Edit2: Win 7 x64 JRE 6 update 30

Edit3: my (after your suggestions) file is:
#Sun Jan 08 01:12:04 EET 2012 deployment.version=6.0 
deployment.capture.mime.types=true deployment.browser.path=C\:\\Program Files (x86)\\Mozilla Firefox\\firefox.exe
#Java Deployment jre's
#Sun Jan 08 01:12:04 EET 2012 deployment.javaws.jre.0.registered=true 
deployment.javaws.jre.0.platform=1.6 deployment.javaws.jre.0.osname=Windows 
deployment.javaws.jre.0.path=C\:\\Program Files (x86)\\Java\\jre6\\bin\\javaw.exe 
deployment.javaws.jre.0.product=1.6.0_30 deployment.javaws.jre.0.osarch=x86 
deployment.javaws.jre.0.enabled=true deployment.javaws.jre.0.args=-Dsun.java2d.d3d\=false 

still hardware acceleration is enabled. Is there a possibility that applications can override these settings?

share|improve this question
what version of java? what is the OS? . . . If the program was using an OpenGl hardware acceleration, and it is blurry, I wonder if adjusting and locking manually your graphics cards opengl antialising (None) and asotropic (none) filtering things. . - Just from trying to read about it on the web now. If it is text, some cleartype setting ? – Psycogeek Dec 31 '11 at 12:01
Whatever uses hardware acceleration displays blurry image. Nothing is drawn actually, only artifacts. This is verified and it is not driver related but a hardware failure – Odys Dec 31 '11 at 13:22
That looks like the deployment properties file for the 32bit version, maybe there's another for 64bit – mavhc Jan 19 '12 at 20:44
Everything that uses HA is displayed blurry. Why don't you fix this problem instead? :-/ – Tom Wijsman Apr 2 '12 at 10:40

In my case the graphic corruption disappeared after adding the parameter -Dsun.java2d.noddraw=true

alt text

share|improve this answer
It is obvious that java paths differ badly from post to post. – ZaB Apr 2 '12 at 11:41
And the relation between java paths and runtime parameters is ... ? – alexandrul Apr 2 '12 at 15:22

It seems that editing that setting in the Java Control Panel causes the file


(Or whereever %appdata% points to)

to get a line:


That's per user settings, there's also a system settings option, that may be in All Users, not tested

share|improve this answer
What does Jre.1.args means? – Odys Jan 15 '12 at 11:27

Using directx does not imply hardware acceleration is being used behind the scenes. You might want to resuce global acceleration if you see defective drawing (or update drivers)

share|improve this answer
In Win7 you cannot change the hardware acceleration if you have video drivers installed. Because I cannot do this, I have to disable acceleration one level below global-HW-acceleration. – Odys Apr 5 '12 at 8:17
If you use drivers from HCL ( the slider to reduce acceleration is back, and you can use official support channels to complain that you have to use it. Can you post a picture of "blur" you get? – ZaB Apr 5 '12 at 16:57

You must log in to answer this question.

Not the answer you're looking for? Browse other questions tagged .