Chimera and Linux hanging very likely is because of a graphics driver bug.  Probably your Ubuntu 12.04 graphics driver got updated a few days ago.  The solution is to install a working graphics driver.  Greg Couch in our lab might have a recommendation about which driver will work.  He would probably need to know your graphics card (Nvidia? AMD? Intel?)

Tom


On Apr 17, 2014, at 4:32 AM, Prasanth Kumar wrote:

Dear Sir/Madam,
                           I have been using chimera for past 3 months. In the past two days, when i load my saved sessions (.py files), chimera is getting hanged and my ubuntu 12.04 OS is also getting hanged.

So please help me on how to fix the problem. Chimera has been a really useful tool in my research. 

Waiting for your reply.

Thank you,
Yours Truly,
 PRASANTH,
 Undergraduate Department,  
 Indian Institute of Science,
 Bangalore-560012.
               prasanth@ug.iisc.in.
  
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