python matplotlib illegal instruction

Question

I'm experiencing a strange crash when I try to plot in python using matplotlib

For example, running the following command in the python interpreter

>>> import matplotlib.pylab
>>> pylab.plot([1,2,3,4])

produces the error

Illegal instruction (core dumped)

I'm running Ubuntu 12.04.4 LTS. My python packages have the following versions:

>>> sys.version
'2.7.3 (default, Sep 26 2013, 20:03:06) \n[GCC 4.6.3]'

>>> numpy.__version__
'1.6.1'

>>> matplotlib.__version__
'1.1.1rc'

>>> matplotlib.pylab.__version__
'1.6.1'

I would appreciate greatly any ideas on what might cause my problem.

Read the core dump - I had a similar problem on Debian unstable about a year ago. It was related to a qt library problem, which was upgraded. Also trying different matplotlib-backend might also put some light in your problem. — Dietrich
– Dietrich, Commented Mar 6, 2014 at 22:17

mauscope · Accepted Answer · 2014-08-07 16:30:12Z

1

You may try to change the BLAS libraries.

try (you need to use sudo here):

update-alternatives --config libblas.so.3

and select a different library. I found the the "atlas-base" libraries to work. (on a Debian Wheezy, python3, I installed the altlas3-base libraries and it works ok)

I also installed the package "fort77" which seems a requirement here

edited Aug 7, 2014 at 16:30

answered Jul 14, 2014 at 8:33

mauscope

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