Problems with xmaxima: "Failed to eval region"

This may be the same problem that I am having with wxMaxima but you seem to be still having problems even with the correct host name.

I have written to the Ubuntu forum tonight with the following:

Ubuntu Hardy 8.04

I have installed the maths program wxMaxima (and Maxima). On starting
wxMaxima I get the message "not connected to Maxima!". On a Dutch forum
I found that if I change the host name to "127.0.0.1 localhost" it
works.

Unfortunately this causes other problems.

To be able to open Synaptic or Update Manager the host name has to be set to "127.0.0.1 peter-laptop". 

Is there a way out of this conundrum?

Lan Thuy Pham wrote:

> Hi
>
> I'm using xmaxima on ubuntu 8.04 and get the following message when I 
> try to click some of the examples in the "Maxima Primer" (visible at 
> start up):
> "Failed to eval region
> Failed to eval region
>      while executing
> "error [mc "Failed to eval region"]"
>      (procedure "doInvoke" line 50)
>      invoked from within
> "doInvoke .browser.t1.text @253,81 "
>      (command bound to event)"
>
> After some time, this pops up:
> "Starting maxima timed out, Wait longer?"
>
> wxmaxima does not work either. For instance, if I write 1+1, wxmaxima 
> returns;
> "Not connected to maxima!"
>
>
> Maxima CLI and imaxima (though emacs) works fine:
> "xxx at xxx:~$ maxima
>
> Maxima 5.13.0 http://maxima.sourceforge.net
> Using Lisp GNU Common Lisp (GCL) GCL 2.6.8 (aka GCL)
> Distributed under the GNU Public License. See the file COPYING.
> Dedicated to the memory of William Schelter.
> This is a development version of Maxima. The function bug_report()
> provides bug reporting information.
> (%i1) 1+1;
> (%o1)                                  2
> (%i2)
> "
>
> I've read a missing entry for localhost at /etc/hosts could be the 
> problem, however, my /etc/hosts appears to be correct:
> "xxx at xxx:~$ cat /etc/hosts
> 127.0.0.1   localhost
> 127.0.1.1   thiscomputer
>
> # The following lines are desirable for IPv6 capable hosts
> ::1     ip6-localhost ip6-loopback
> fe00::0 ip6-localnet
> ff00::0 ip6-mcastprefix
> ff02::1 ip6-allnodes
> ff02::2 ip6-allrouters
> ff02::3 ip6-allhosts"
>
>
> This is the specifications of my maxima install:
> "xxx at xxx:~$ aptitude show  maxima
> Package: maxima
> State: installed
> Automatically installed: yes
> Version: 5.13.0-3ubuntu1
> Priority: optional
> Section: universe/math
> Maintainer: Ubuntu MOTU Developers <ubuntu-motu at lists.ubuntu.com>
> Uncompressed Size: 33,9M
> Depends: gnuplot-nox, libc6 (>= 2.7-1), libgmp3c2, libice6 (>= 1:1.0.0), 
> libncurses5 (>= 5.6+20071006-3), libreadline5 (>= 5.2), libsm6, 
> libx11-6, libxaw7,
>           libxext6, libxmu6, libxt6
> Recommends: gv, maxima-share
> Suggests: maxima-doc, texmacs, wish
> Description: [...]"
>
> BTW, I'm using wicd as my network manager as I had some problems with 
> the default gnome network manager. I don't know if this is causing the 
> problems.
>
> Any help appreciated,
> Lan Thuy Pham
>
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>