[Python-apps-team] Bug#677421: mayavi2: segfaults as soon as a module is loaded

[Francesco Poli]

On Sun, 1 Jul 2012 18:27:15 -0400 Varun Hiremath wrote:

[...]
> On Sun, Jul 1, 2012 at 4:56 PM, Francesco Poli
> <invernomuto at paranoici.org> wrote:
> > I've just reproduced it again, unfortunately.
> >
> > Maybe the issue is triggered by something unrelated to the packages
> > mayavi2 depends on...
> > For instance, it could be video-hardware-specific: the boxes I tested
> > mayavi2 on have Intel integrated graphics
> > (xserver-xorg-video-intel/2:2.19.0-4).
> > Do you have the same type of video card?
> 
> I earlier tested on a system with NVidia card (running with Vesa), and
> just now tried on a laptop with intel graphics (running
> xserver-xorg-video-intel/2:2.19.0-4). I don't get any segfault and the
> modules load fine. Do I need to something extra after loading the
> modules? I see the streamlines and the iso-surface; I can send you
> screenshots if you want.

No need to send screenshots, I believe you!   ;-)

> 
> Thanks,
> Varun
> 
> Installed packages:
> 
> ii  ipython                              0.9.1-3
> ii  libc6                                2.13-21
> ii  libjs-jquery                         1.7-1
> ii  python                               2.7.2-9
> ii  python-apptools                      4.0.0-1
> ii  python-configobj                     4.5.2-2
> ii  python-envisage                      4.0.0-1
> ii  python-numpy                         1:1.6.2-1
> ii  python-pkg-resources                 0.6.16-1
> ii  python-traits                        4.1.0-1
> ii  python-traitsui                      4.1.0-1
> ii  python-vtk                           5.8.0-13
> ii  python-wxgtk2.8                      2.8.12.1-11
> ii  python2.7                            2.7.3-1

Mmmmh, it seems to me that you are trying to reproduce the bug on
an outdated Debian testing (or unstable) box.

I use Debian testing and have the following package versions installed:

$  dpkg -l ipython libc6 libjs-jquery python python-apptools  \
           python-configobj python-envisage  python-numpy     \
           python-pkg-resources python-traits python-traitsui \
           python-vtk python-wxgtk2.8 python2.7 | cut -c 1-60
Desired=Unknown/Install/Remove/Purge/Hold
| Status=Not/Inst/Conf-files/Unpacked/halF-conf/Half-inst/tr
|/ Err?=(none)/Reinst-required (Status,Err: uppercase=bad)
||/ Name                                  Version           
+++-=====================================-==================
un  ipython                               <none>            
ii  libc6:amd64                           2.13-33           
ii  libjs-jquery                          1.7.2+debian-2    
ii  python                                2.7.3~rc2-1       
ii  python-apptools                       4.0.1-1           
ii  python-configobj                      4.7.2+ds-4        
ii  python-envisage                       4.1.0-2           
ii  python-numpy                          1:1.6.2-1         
ii  python-pkg-resources                  0.6.24-1          
ii  python-traits                         4.1.0-1           
ii  python-traitsui                       4.1.0-1           
ii  python-vtk                            5.8.0-13          
ii  python-wxgtk2.8                       2.8.12.1-11       
ii  python2.7                             2.7.3~rc2-2.1

Also, did you try to reproduce the bug on amd64 architecture?

Please note that installing ipython/0.12.1+dfsg-2 does not seem to help.


Wait a second, I noticed an important thing!

It seems that there's a huge difference in how I add modules
in step 1 (see my original bug report).

First possibility: in the tree-like view of the objects, I click on "+
Add module or filter" (under "VTK XML file (fire_ug.vtu)"), then in the
Mayavi object editor ("Visualization modules" tab) I double-click on
"Streamline".
Booom! Segmentation fault!

Second possibility: I select "VTK XML file (fire_ug.vtu)" in the
tree-like view, and then I right-click on it and get the context menu.
I select Add Module / Streamline from the menu.
Everything seems to work fine.

Third possibility: I select "VTK XML file (fire_ug.vtu)" in the
tree-like view, and then I click on "+" button in the tool bar
(on top of the tree-like view). I double-click on "Streamline"
in the dialog window and the close the dialog window itself.
Everything seems to work fine.

Fourth possibility: I select Modules / Streamline from the Visualize
menu.
Everything seems to work fine.


I hope that this helps to pinpoint the issue.
Please let me know.

Thanks for your time!


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