[Chimera-users] Should bugs be reported to the chimera-users mailing list?

Thomas Goddard goddard at cgl.ucsf.edu
Mon May 4 10:44:51 PDT 2009

Hi Victor,

   If you get an error traceback in Chimera it is best to press the 
"Report Bug" button.  That sends the traceback, Chimera version, 
platform and graphics driver version to us for debugging.  That is 
usually much more efficient than discussing it on chimera-users.

   If you are unsure if some behavior is a bug then chimera-users is the 
place to discuss that.

   If Chimera crashes then restart it and use Help / Report a Bug and 
briefly describe what led to the crash.  That will send along your 
system and Chimera configuration info.


Victor Alves wrote:
> Dear Tom
> Your advice worked perfectly.
> I updated to build 27479 from 2009-05-03 and 2D Labels are now visible in
> saved images and disabling Pbuffer as suggested in your other mail allowed
> me to save really huge images with no problems at all.
> Since I decided to use daily builds, I am aware that this bugs are normal
> and part of the development cycle, but I happily trade some stability for
> cutting edge developments :-)
> So my question is: is the general Chimera mailing list the proper channel
> for discussing these software quirks from these alpha or beta versions?
> Thank you so much
> Victor Alves
> -----Original Message-----
> From: Tom Goddard [mailto:goddard at cgl.ucsf.edu] 
> Sent: sábado, 2 de Maio de 2009 1:09
> To: Victor Alves
> Cc: 'Chimera BB'
> Subject: Re: [Chimera-users] Chimera crashes when saving image
> Hi Victor,
>   This appears to be a linux graphics driver problem that you see when 
> using new Chimera 1.4 image saving code that uses off-screen OpenGL 
> PBuffers to capture images.  Chimera 1.3 saves images directly from your 
> screen and will not have this problem.  You can also make Chimera 1.4 
> use the older image saving technique by starting Chimera on linux with 
> "chimera --debug-opengl", then turning off the Pbuffer switch in the 
> opengl debug dialog that appears at startup.  Greg Couch in our lab is 
> working on the Pbuffer code and can provide more advice next week.
>     Tom
> Victor Alves wrote:
>> Hi
>> I am using Chimera alpha 1.4 build 27395 in Ubuntu 9.04 Jaunty 32 bits
>> version, in a laptop with Core2Duo at 2.4GHz each core, 4 Gb RAM.
>> When I use Save Image, sometimes if I increase the size of the image or
>> increase supersmple values, Chimera will crash with this terminal message:
>> X Error of failed request:  GLXBadPbuffer
>>   Major opcode of failed request:  128 (GLX)
>>   Minor opcode of failed request:  28 (X_GLXDestroyPbuffer)
>>   Serial number of failed request:  107906
>>   Current serial number in output stream:  107908
>> (The last 2 numbers will vary between crashes)
>> After restarting Chimera sometimes I can save the image using the same
> image
>> specifications, other times it will keep crashing and only reducing the
> size
>> or the Supersample numbers, I can save the image.
>> Is this laptop not powerful enough?
>> Do you need more information?
>> Should I try another build?
>> Thank you in advance
>> Victor Alves
>> PS: My first message to the BB, so congratulations to the developers for
> an
>> excellent piece of software.
>> _______________________________________________
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>> Chimera-users at cgl.ucsf.edu
>> http://www.cgl.ucsf.edu/mailman/listinfo/chimera-users
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