Black Screen

GWT Designer allows you to quickly create the modules, composites, panels, remote services and other elements that comprise Google Web Tookit applications.

Moderators: Konstantin.Scheglov, gnebling, Alexander.Mitin, jwren, Eric Clayberg

Black Screen

Postby vampie » Fri Jun 05, 2009 2:46 pm

I have updated GWT designer 6.9.1 ( latest )
and I get black screen as follows


On Shell : It says

[root@jlaptop0 /home/vampie]# ./eclipse34.sh
GConf Error: Failed to contact configuration server; some possible causes are that you need to enable TCP/IP networking for ORBit, or you have stale NFS locks due to a system crash. See http://projects.gnome.org/gconf/ for information. (Details - 1: Failed to get connection to session: Did not receive a reply. Possible causes include: the remote application did not send a reply, the message bus security policy blocked the reply, the reply timeout expired, or the network connection was broken.)
window = 752994224
Browser ready.
=================================================================================

eclipse34.sh inside as follows:

export MOZILLA_FIVE_HOME=/usr/local/lib/firefox3
export JAVA_HOME=/usr/local/diablo-jdk1.6.0
export PATH=$JAVA_HOME/bin:$PATH

/usr/local/eclipse/eclipse
=================================================================================


eclipse built on freebsd 7.2 with nvidia driver + xulrunner and firefox3 ( both working the same black screen )


finally, What can cause the black screen?

PS. Test Preview is working good with white ( usual ) background..


Thx.
Attachments
gwtdesigner_black.jpg
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vampie
 
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Re: Black Screen

Postby Alexander.Mitin » Sun Jun 07, 2009 3:46 am

Give a try in v7.0.
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Re: Black Screen

Postby vampie » Sun Jun 07, 2009 12:12 pm

I did same result...

what else can cause the problem?
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Re: Black Screen

Postby Eric Clayberg » Sun Jun 07, 2009 1:42 pm

Typically, that is cause by a bad video driver or a problem with the local window manager. One or the other is not rendering off screen graphics.

Designer creates the WYSIWYG images off screen and then grabs the image for display in the Design view.

A black image means nothing is being rendered off screen (often because a window manager or video driver is trying to be "smart" and optimze the display).
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http://code.google.com/webtoolkit/download.html

Author: "Eclipse Plug-ins"
http://www.qualityeclipse.com
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Re: Black Screen

Postby vampie » Mon Jun 08, 2009 12:22 pm

Eric,

What does your designer depend on? Eclipse GEF ?


I have changed window manager ( from gnome to KDE )
I de installed nvidia driver and installed old driver...

I have changed everything ( firefox 3 to xulrunner ) etc...

The only thing i did not change is Xorg ...


I could not find what happened. I just upgraded freebsd and everything went black :)

Rolling stones, Paint It Black :) haha


I do want to solve the problem, it can also be caused by ECLIPSE's GEF or other plugin interface that your designer depends on...
what is dependency of it...?


Thanks in Advance
vampie
 
Posts: 89
Joined: Mon Nov 06, 2006 10:18 am

Re: Black Screen

Postby Eric Clayberg » Mon Jun 08, 2009 2:40 pm

vampie wrote:What does your designer depend on? Eclipse GEF ?

Designer only depends on Eclipse (including GEF). You can see from your screen shot that GEF is working just fine (you can see he selection rectangle, for example).

vampie wrote:I could not find what happened. I just upgraded freebsd and everything went black :)

Ah. Well I think you just identified the problem. ;-)

It sounds like the latest freebsd update has a serious bug in it. They are likely trying to optimize off screen displays by not rendering anything at all (which is a fine optimization in most cases, but represents a serious bug for any off screen graphics). Thus, the black image. You should report this bug to the freebsd folks and see if there is a config option to disable that optimization. If you can disable that new "feature" in freebsd, I am guessing that it will work just fine.
Eric Clayberg
Software Engineering Manager
Google
http://code.google.com/webtoolkit/download.html

Author: "Eclipse Plug-ins"
http://www.qualityeclipse.com
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