[Chimera-users] A question on tunnelling chimera through ssh between a linux server and OSX client

Miguel Ortiz Lombardía miguel.ortiz-lombardia at afmb.univ-mrs.fr
Tue Apr 29 08:49:32 PDT 2014

Hi all,

I understand that this is not a typical use of chimera, so I don't
expect much support, but I would appreciate if someone can give me a
clue to solve the issue...

We have a GNU/Linux server (Debian wheezy) with some EM software
installed on it. One of these programs calls at some point chimera to
show something on which the user has to act upon (or just check, not
sure, I'm not the user as you've guessed) This machine is accessed from
client OSX machines via ssh. All permissions are set so X11 is
seamlessly tunnelled between them (checked with many graphical programs)
Now, for a OSX client running on 10.6.8 (snow leopard) and using Apple's
X11 the whole process works without problems. But for a OSX on 10.7.5
(lion) with a parallel installation of Apple's X11 and Xquartz 2.7.5 the
first small window opens and then the chimera process hangs (it can be
killed via Ctrl-C, which returns the control to the program that
launched chimera and things can proceed, though without the information
provided by chimera)

If I connect to the Linux server from the lion machine and directly
execute chimera I make a different observation: the first small window
opens but then chimera crashes leaving this error in the terminal:

Error of failed request:  GLXBadCurrentWindow
  Major opcode of failed request:  149 (GLX)
  Minor opcode of failed request:  5 (X_GLXMakeCurrent)
  Serial number of failed request:  1360
  Current serial number in output stream:  1360

Now, I would appreciate any clues on the meaning and possible solution
of this error or at least any directions on how to properly remove both
Apple's X11 and Xquartz (they are supposed to be able to work
side-by-side but I presume that a possible source of problems could
arise from some conflict between them) AND re-install them to test them
in a fresh install.

Downgrading the lion machine to snow leopard does not seem to be an

Thank you!

Miguel Ortiz Lombardía

Architecture et Fonction des Macromolécules Biologiques (UMR7257)
CNRS, Aix-Marseille Université
Case 932, 163 Avenue de Luminy, 13288 Marseille cedex 9, France
Tel: +33(0) 491 82 86 44
Fax: +33(0) 491 26 67 20
mailto:miguel.ortiz-lombardia at afmb.univ-mrs.fr

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