fb: conflicting fb hw usage mgag200drmfb vs EFI VGA - removing generic driver opensuse

while i am running java code i got error on gwt kit , when i googled i found out is related to my graphics card , in log message i fond this ( fb: conflicting fb hw usage mgag200drmfb vs EFI VGA - removing generic driver opensuse )

the gwt error i got {

java.lang.RuntimeException: cannot load system cursor: CopyDrop.32x32
at sun.awt.X11.XToolkit.lazilyLoadDesktopProperty(XToolkit.java:1523)
at java.awt.Toolkit.getDesktopProperty(Toolkit.java:1804)
at java.awt.dnd.DragSource.load(DragSource.java:131)
at java.awt.dnd.DragSource.<clinit>(DragSource.java:147)
at javax.swing.plaf.basic.DragRecognitionSupport.mousePressedImpl(DragRecognitionSupport.java:120)
at javax.swing.plaf.basic.DragRecognitionSupport.mousePressed(DragRecognitionSupport.java:76)
at javax.swing.plaf.basic.BasicTreeUI$Handler.mousePressedDND(BasicTreeUI.java:3561)
at javax.swing.plaf.basic.BasicTreeUI$Handler.mousePressed(BasicTreeUI.java:3547)
at java.awt.AWTEventMulticaster.mousePressed(AWTEventMulticaster.java:280)
at java.awt.Component.processMouseEvent(Component.java:6502)
at javax.swing.JComponent.processMouseEvent(JComponent.java:3311)
at java.awt.Component.processEvent(Component.java:6270)
at java.awt.Container.processEvent(Container.java:2229)
at java.awt.Component.dispatchEventImpl(Component.java:4861)

and in my var/log message

fb: conflicting fb hw usage mgag200drmfb vs EFI VGA - removing generic driver opensuse


i have tried my java code on both java 1.6( sun) and openjdk(1.7)
i am unable to run my gwt based software .

Looks like this:

So try to add “nomodeset” to the boot options (in YaST->System->Boot Loader->Boot Loader Options f.e.) and see if it works then.
If I understand the bug report right, your system is only able to use the “mga” driver when nomodeset is specified.

Thank you for your reply

in my boot option i got this :

VGA MODE: unspecified
optional kernel command line parameter : resume=/dev/disk/by-id/scsi-3600605b006daef701a5f0b2125a4efbb-part2 splash=silent quiet showopts

failsafe kernel command line parameter : showopts apm=off noresume edd=off powersaved=off nohz=off highres=off processor.max_cstate=1 nomodeset x11failsafe

is this mean nomodset is already there?

Well, yes and no.

The second line is for “recovery mode” (you can select that under “Advanced Options” in the boot menu).
But you should try to add “nomodeset” to the first one as well, i.e. “Optional Kernel Command Line Parameter”.