ECM?

The worg tutorial has an example using #+begin_src which should be
translated into \begin{lstlisting} environments in latex.

namely:

#+begin_src octave
A = [1 2 ; 3 4]
b = [1; 1];
x = A\b
#+end_src

But when I check the corresponding latexcode (C-c C-e L) the  necessary
package is not imported, namely   "\usepackage{listings}"

I was able to solve the other problem with BEAMER_FRAME_LEVEL  adding
"\subsection{%s}" to Org-Export-Latex-Classes.

I'm using  gnu-emacs 23.1.50.1.

It seems like some auto-configurations of the latex-classes are not
initialized.

If I'm the only one experiencing this problem I will try to set up a new
emacs instance to test it.

Cheers
  Rolf
2011/8/6 Sebastien Vauban <wxhgmqzgwmuf@spammotel.com>

> Hi LanX,
>
> LanX wrote:
> > maybe I'm missing something but the examples in
> >
> > http://orgmode.org/worg/org-tutorials/org-beamer/tutorial.html
> >
> > don't seem to work with a normal org-mode 7.7 installation.
> >
> > For instance  needed to add       \usepackage{hyperref} in
> > Org-Export-Latex-Classes to make #+begin_src work.
> >
> > Are the settings of
> >
> http://emacs-fu.blogspot.com/2009/10/writing-presentations-with-org-mode-and.htmlnecessary
> > to use this tutorial?
> >
> > Also
> > #+BEAMER_FRAME_LEVEL: 3
> > doesn't seem to work for me... no subsections are generated.
>
> Could you send us an ECM (complete, but... minimal example) that allows us
> to
> reproduce the above problems?
>
> Best regards,
>  Seb
>
> --
> Sebastien Vauban
>
>
>