[IDV #RRP-441625]: Strange IDV/Xvfb behavior

Hi Samuel-

Thanks for checking this.

> I get the following when I run IDV with 3D support:
> [weatherctr@shu 1km]$ /home/kauffman/IDV/runIDV 
> /home/kauffman/bundles/GOES_East/1km/kpit.isl
> Mon Jul 14 16:41:13 EDT 2008: Loading bundle: 
> /home/kauffman/bundles/GOES_East/1km/bundles/kpit.xidv
> Java 3D WARNING : reported GLX version = 1.2
> GLX version 1.3 or higher is required
> The reported version number may be incorrect.  There is a known
> ATI driver bug in glXQueryVersion that incorrectly reports the GLX
> version as 1.2 when it really is 1.3, so Java 3D will attempt to
> run anyway.
> JAVA 3D: OpenGL 1.2 detected; will run with reduced functionality
> JAVA 3D: OpenGL 1.2 detected; will run with reduced functionality
> JAVA 3D: OpenGL 1.2 detected; will run with reduced functionality

This I expected.  ATI drivers are problematic.
 
> I have a simultaneous terminal window open running Xvfb, and this is what I 
> get when I run Xvfb:
> [weatherctr@shu 1km]$ /usr/bin/Xvfb :3 -screen 3 1280x1024x24 -fbdir /var/tmp
> Segmentation fault (core dumped)
> 
> I have enclosed an image of what 'xwud -in /var/tmp/Xvfb_screen3' produces.

This I didn't expect since it appears to be the same as what happens
with the older version of Java 3D.  We'll see what Red Hat support says.
I said that you could provide them with the bundle and isl script to test.

Don Murray
_____________________________________
> From: Zehel, Samuel
> Sent: Monday, July 14, 2008 4:32 PM
> To: address@hidden
> Subject: RE: [IDV #RRP-441625]: Strange IDV/Xvfb behavior
> 
> Sure, will do.
> 
> 
> -----Original Message-----
> From: Unidata IDV Support [mailto:address@hidden]
> Sent: Monday, July 14, 2008 4:31 PM
> To: Zehel, Samuel
> Cc: address@hidden
> Subject: [IDV #RRP-441625]: Strange IDV/Xvfb behavior
> 
> Hi Samuel-
> 
> > Just as another comment, I have a technical support call into Red Hat as 
> > well, since I'm thinking this is an Xvfb problem, but I thought I'd send a 
> > shout your way as well.
> 
> Okay.  I just gave them access to the version you are using.
> 
> Can you try installing the other Linux version which has an updated
> Java 3D version and see if that works?
> 
> Don
> 
> > -----Original Message-----
> > From: Zehel, Samuel
> > Sent: Friday, July 11, 2008 4:01 PM
> > To: Zehel, Samuel; 'address@hidden'
> > Subject: RE: [IDV #RRP-441625]: Strange IDV/Xvfb behavior
> >
> > Just as a comment:
> > I don't think it's the video-card configuration, since I can run this .ISL 
> > script with no problem from the console of the HP ML370 machine.   The HP 
> > ML370 machine is the one that can't run the IDV .ISL script in Xvfb (which 
> > should be hardware independent anyway)
> >
> > -----Original Message-----
> > From: Zehel, Samuel
> > Sent: Friday, July 11, 2008 3:59 PM
> > To: 'address@hidden'
> > Subject: RE: [IDV #RRP-441625]: Strange IDV/Xvfb behavior
> >
> > Both machines don't have the same card (I don't think so anyway), the RHEL5 
> > machine is running on an HP ML370 with a stock video card(Integrated ATI 
> > ES1000, 32 MB video standard), and the RHEL3 machine is running on a DELL 
> > platform, with a stock video card(Integrated ATI-Rage XL controller with 
> > 8MB of SDRAM (not upgradable).  I thought the whole point of Java was to 
> > make graphics rendering platform (video card) independent.
> > They are running the same version of IDV (2.5)
> > They are running the same version of Java (1.5.0_11)
> > They are running the same version of Java3D (1.3.1)
> >
> > -----Original Message-----
> > From: Unidata IDV Support [mailto:address@hidden]
> > Sent: Friday, July 11, 2008 3:45 PM
> > To: Zehel, Samuel
> > Cc: address@hidden
> > Subject: [IDV #RRP-441625]: Strange IDV/Xvfb behavior
> >
> > Hi Samuel-
> >
> > > I've recently installed a RHEL5 system, and copied all of our .ISL 
> > > scripts from a RHEL3 machine, to run them on our RHEL5 machine.
> > >
> > > For some strange reason, the .ISL scripts terminate IDV if I run them in 
> > > an Xvfb session, and the Xvfb session dies in Segmentation fault.
> > >
> > > The exact same script works fine in Xvfb on our RHEL3 machine, and the 
> > > script even works fine if run from the console of our RHEL5 machine, but 
> > > for some strange reason the script doesn't run correctly on our new 
> > > machine thru Xvfb.
> > >
> > > I'm at a loss as to why Xvfb goes into Segment fault.  I've tried every 
> > > combination of resolution/depth I could think of, but they all seem to 
> > > segment fault the Xvfb server.
> > >
> > > I tried the most suggested resolution&depth (1280x1024x24), and ran the 
> > > .ISL script from another terminal.  Using xwud, I can see that IDV 
> > > starts, and creates the image properly, but it seems to crash when it 
> > > tries to write the output to a .PNG file.
> > >
> > > IDV reports no error, only Xvfb dies on a Segmentation fault.
> > >
> > > I can run other Xwindows applications (albeit simple) like xeyes, with no 
> > > problem on Xvfb.
> > >
> > > Samuel M. Zehel Jnr
> >
> > I suspect there is some issue between Java 3D and Xvfb.
> >
> > Do both systems have the same graphics card?  If so, what is that?
> >
> > Are they both running the same version of IDV?  In particular,
> > are they both running the same version of Java 3D?  You
> > can check through the Help->About... menu and clicking on
> > the System tab in the dialog.  It will show what version of
> > Java and Java 3D you are running.
> >
> > We don't have Xvfb set up here, so we'll have to get that
> > set up and run some tests.  In the meantime, please let
> > me know the answers to the questions above.
> >
> > Don Murray
> >
> >
> >
> > Ticket Details
> > ===================
> > Ticket ID: RRP-441625
> > Department: Support IDV
> > Priority: Normal
> > Status: Open
> >
> >
> 
> 
> Ticket Details
> ===================
> Ticket ID: RRP-441625
> Department: Support IDV
> Priority: Normal
> Status: Open
> 
> 
> 


Ticket Details
===================
Ticket ID: RRP-441625
Department: Support IDV
Priority: Normal
Status: Open