Problem/s with Maxima, et al (on Ubuntu 8.10)

Hi Leo, Jaime,

I installed gnuplot... & now xmaxima seems to function ok... (& it 
calculates & plots the demos...), except I now get this error (in bottom 
of message returned, & which I do not know exactly the implications of 
this) in the terminal window when I launch it from the terminal with the 
*command line, 'xmaxima'*:

henry at henry-heron:~$ xmaxima
Maxima 5.16.3 http://maxima.sourceforge.net
Using Lisp CLISP 2.44.1 (2008-02-23)
Distributed under the GNU Public License. See the file COPYING.
Dedicated to the memory of William Schelter.
The function bug_report() provides bug reporting information.
(%i1) jfa: starting server on port 4008

*** - handle_fault error2 ! address = 0xdfffffff not in 
[0x683a5d08,0x685da000) !
SIGSEGV cannot be cured. Fault address = 0xdfffffff.
Permanently allocated: 107072 bytes.
Currently in use: 9758248 bytes.
Free space: 9386 bytes.


Wxmaxima still has no command line (though it says "ready for user 
input" at the lower right corner (to the right of where the command line 
might be). The work space has a bracket which stretches with input, with 
a triangle hanging on the top inward line... & a couple of '>>' (I think 
this may be something like a group input entry form (?). There does not 
seem to be any configuration/preferences to change this condition.  
Something is quite wrong here, some how.

Perhaps the problem lays with wxMaxima (v.0.8.1)?

I can launch wxMaxima from an icon in the applications menu, same result.

Thanks much for help!

Henry
p.s., please, if you need more information, or for me to try something 
else, glad to try... 

& one other query, if I may; what about the 'i686' install of v.5.17 (as 
I said, I believe my machine is for i386)?  Is this, or could this be a 
problem for me, once (under the hopefully *not* hypothetical situation), 
we can actually iron out the current problem/s? If so, can one direct 
the v. 5.17 source build to do other ways than i686?

Leo Butler wrote:
> On Mon, 5 Jan 2009, Henry W. Peters wrote:
>
> < /bin/sh: gnuplot: not found
>
> Maxima uses gnuplot to do its plotting, so gnuplot must be installed. 
> This last line tells you that 'gnuplot' has not been found. It is likely
> not installed on your machine (?). Try
>
> apt-get -s install gnuplot
>
> to simulate (-s) the installation of gnuplot. To actually install
> gnuplot, remove the '-s' from the line above.
>
> Leo
>
>
> < 
> < Any one with ideas about what is, or is not going on here? Further 
> < tests? CLISP problem? Or... or...
> < 
> < Henry
>   


> Can you please tell us the exact command you used?
> You can try using the following command before to attempt to do the
> plot:
>    set_plot_option([plot_format,openmath])$
> does that work?
>
> Regards,
> Jaime