Re: [Visualpython-users] vpython on ubuntu

[Jim T. <jt...@mi...>]

Gee, I thought I had VPython working just fine on Ubuntu 9.04 AMD64 on 
ATI proprietary until I ran your tests.  However since I was able to 
develop my VisualPyODE library and demos without problems on this 
platform, maybe it is not such a show stopper.  I hadn't even noticed...

JT

Guenter Schneider wrote:
> I have struggled to get vpython fully working on ubuntu for a while now. 
> Here is my summary what I learned. Let me say right away, as far as I 
> can tell it's not a vpython problem.
>
> First, unlike others on this list, I have no problems compiling vpython 
> 5.12. It works using debian Lenny on any computer I have tried. By
> 'it works' I mean these simple tests do not result in seg. faults:
>
> TEST 1:
>  >>> from visual import *
>  >>> v = vector('x')
> Traceback (most recent call last):
>    File "<stdin>", line 1, in <module>
> ValueError: Vectors must be constructed from sequences of 2 or 3 float 
> members.
>  >>>
>
> TEST 2:
>  >>> from visual import *
>  >>> v=vector(1,2,3)
>  >>> for i in v:
> ...     print i
> ...
> 1.0
> 2.0
> 3.0
>  >>>
>
> On ubuntu 9.04 it works on some computers but not on others. It doesn't 
> matter if I use 32 bit or 64 bit ubuntu 9.04.
>
> In fact the same pattern holds true in my tests for the python-visual 
> package that is distributed with ubuntu 9.04 (which is vpython 3.2.9). 
> It fails on all computers if a proprietary graphics driver is not 
> installed. Activating an nvidia proprietary graphics driver results in a 
> working vpython (as defined above), on system with ati graphics cards I 
> was not so lucky. I tried 6 different computers, 2 with nvidia graphics 
> and 4 with ati graphics.
>
> I got the same result for ubuntu 8.10. It always works with ubuntu 8.04.3.
>
> I filed a bug report with ubuntu against vpython since I have no idea 
> what is causing this problem.
>
> I could not try python-visual on karmic alpha (which 5.11) since that 
> leads to a seg fault like this
>
>  >>> from visual import *
> Segmentation fault
>
> There is already a bug report for this.
>
> Guenter
>
>
>
>
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