Re: [Q] Expyriment -- OpenGL mode is not supported...

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Oliver Lindemann

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Jul 30, 2015, 1:38:11 PM7/30/15
to Yamauchi, Takashi, expyrime...@googlegroups.com
For some reasons your video card does not support OpenGL. What kind of video card do you have? This means that the time of the stimulus presentation might not be millisecond precise. If you do not really need that on this machine, you can call

expyriment.control.defaults.open_gl = False

before you initialize your experiment. It should work, but Exypriment can not ensure a super precise timing! See http://docs.expyriment.org/expyriment.control.defaults.html?highlight=opengl

Please direct your questions always to our user-group: https://groups.google.com/forum/#!forum/expyriment-users

Best,
Oliver




On 30.07.2015 19:07, Yamauchi, Takashi wrote:
Dear Dr. Krause and Dr. Lindermann

Thank you so much for creating a wonderful platform for psychology experiments.

I installed Expyriment on my Windows 7 computer (32bit) as specified in your installation instructions (http://docs.expyriment.org/Installation.Windows.html). 

I tried your fist tutorial example (first_experiment.py) but I keep getting the following error message. 


***
Traceback (most recent call last):
  File "I:\python\examples\exp\Expyriment\tutorial\first_experiment.py", line 4, in <module>
    expyriment.control.initialize(exp)
  File "C:\Python27\lib\site-packages\expyriment\control\_experiment_control.py", line 414, in initialize
    window_size=defaults.window_size)
  File "C:\Python27\lib\site-packages\expyriment\io\_screen.py", line 117, in __init__
    machine!")
RuntimeError: OpenGL mode is not supported on this machine!

***

I did pretty much everything to find out this error (I reinstalled OpenGL as suggested in your installation page. I re-re-installed Expyriment both using PyPi (as recommended) and later manual installation (just to check). I still get this error message. What does this error message mean? My machine does not have a proper graphic card for PyOpenGL?  Could you give me some suggestion?  Is there any way to fix this?

Sincerely, 


Takashi Yamauchi
Dept. of Psychology
Texas A&M Univ.
USA

--
Dr. Oliver Lindemann
Division of Cognitive Science
University of Potsdam


Karl - Liebknecht Str. 24/25, Building 14, 14476 Potsdam, Germany
Tel: +49 - 331 - 977 2915, Fax: +49 - 331 - 977 2794
Room: 6.24, Building 14, http://www.cognitive-psychology.eu/lindemann

Takashi Yamauchi

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Jul 30, 2015, 2:54:23 PM7/30/15
to expyriment-users, oliver.l...@uni-potsdam.de
thank you. yes. expyriment.control.defaults.open_gl = False  worked.

takashi
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