[Chimera-users] Ubuntu 12.04 and Chimera 1.6.2

Greg Couch gregc at cgl.ucsf.edu
Tue Nov 6 14:29:30 PST 2012

There are lots of things that could be wrong.  To confirm that the 
X11/OpenGL GLX extension is missing, run the glxinfo program from the 
mesa-utils package (if you need to install mesa-utils, installing the 
associated dependencies might solve your problem) -- it should fail.  
Next examine /var/log/Xorg.0.log to see the error the X11 server has 
loading  the GLX extension.  Fix that error, restart the X11 server, and 
repeat until the glxinfo program works.  Then Chimera should work too.

Last bit of advice, a simple thing to try is to (re)install the graphics 
driver.  If you have AMD/ATI or NVIDIA graphics, we strongly recommend 
that you install the proprietary driver that is installed with the 
Additional Drivers tool in the System Settings dialog.  If you have 
Intel graphics and glxinfo works, but Chimera doesn't, then make sure 
you have all the Ubuntu patches installed.  But even if you keep your 
system up-to-date, if you have Intel graphics, you should switch to 
newer versions of Ubuntu when they come out -- for instance, today, you 
should upgrade to 12.10, and I'd recommend 13.04 when it comes out, /ad 
infinitum/ or at least for the next 5 years, until the Intel graphics 
driver is much less buggy (it has drastically improved in the last 
couple of years, but there is much more being done).



On 11/06/2012 12:26 PM, sette at uniroma2.it wrote:
> Dear all,
> in Ubuntu 12.04, 32 bit, I have the following error message when 
> starting Chimera 1.6.2:
> "Error initializing OpenGL: X server is missing OpenGL GLX extension. 
> Couldn't configure togl widget".
> Do you know a solution for this problem?
> Thanks,
> Marco
> Dr.Marco Sette, Ph.D.
> Department of Chemical Sciences and Technology
> University of Rome, "Tor Vergata"
> via della Ricerca Scientifica, 00133, Rome, Italy
> e-mail: sette at uniroma2.it
> e-mail: m77it at yahoo.it
> Tel.:          +39-0672594424
> Fax:           +39-0672594328
> www.rete29aprile.it
> ----------------------------------------------------------------
> Invito da parte dell'Ateneo:
> Il tuo futuro e quello della Ricerca Scientifica hanno bisogno del
> tuo aiuto. Dona il  5 x mille all'Universita' di Roma Tor Vergata
> codice fiscale: 80213750583 http://5x1000.uniroma2.it

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