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Editorial Team
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Asked: 2026-05-28T03:14:31+00:00

I have installed python 2.7 on CentOS 5.5 x86_64 machine. $ file /opt/python2.7.1/bin/python /opt/python2.7.1/bin/python:

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I have installed python 2.7 on CentOS 5.5 x86_64 machine.

$ file /opt/python2.7.1/bin/python

/opt/python2.7.1/bin/python: ELF 64-bit LSB executable, AMD x86-64, version 1 (SYSV), for GNU/Linux 2.6.9, dynamically linked (uses shared libs), for GNU/Linux 2.6.9, not stripped

Then I tied to run a basic login script using selenium web driver & it fails with the following error. 

selenium.common.exceptions.WebDriverException: Message: 'The browser appears to have exited before we could connect. The output was: Failed to dlopen /usr/lib/libX11.so.6\ndlerror says: /usr/lib/libX11.so.6: wrong ELF class: ELFCLASS32\n'

Why it’s using 32 bit X11 library instead of using 64 bit X11 library? How can I make python use 64 bit libraries?

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1 Answer

  1. Editorial Team

    I have the same error on Scientific Linux 6, and tried changing the libraries as described here:
    http://code.google.com/p/selenium/issues/detail?id=2852

    Firefox 64bit + x_ignore_nofocus fails because:
    In 64 bit mode, as we have see, the library x_ignore_nofocus
    is looking for libX11.so.6 on the way “/usr/lib/libX11.so.6”
    But this symlink /usr/lib/libX11.so.6 is reference to
    /usr/lib/libX11.so.6.2.0, which is 32bit library.

    Changing the link didn’t work for me, but I did not try patching selenium. Hopefully this will be fixed in the next release.

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