[open] Quick Run vs Run the Experiment

onderdonk1

Hello,
I've got a study designed in OpenSesame, it's rather complex. When I run it in quickrun, it works beautifully. However when I run the actual experiment I'm having a lot of problems. Images on screen are not changing when they should, I have strange pauses between some images. Is this the result of the backend I'm using? Does anyone have a suggestion?

Edwin

You might want to specify what the problems are exactly. It sounds like you have a few 'keypress' durations specified in your experiment where you expected to have durations in (0) milliseconds (but forgot to add this?). Those zip by in a quickrun, but expect input in a normal run.

So check your experiment for these kind of things, or report back with a clearer description of the problem.

Good luck!

onderdonk1

The problems change depending on if its full screen or in a window. An instruction page (made using text render) is supposed to disappear after a keypress, and a slideshow begins, but in full screen, the text remains on screen and will not change. In window mode, this isn't a problem, but text slides which appear during break sessions do not. Instead, the screen remains completely black, with the mouse "hourglass" on screen. This blank screen lasts the set amount of time (60 seconds), but no text appears.

onderdonk1

Update: The problem seems to be intermittent. Now I'm only having issues about 25% of the time, the rest of the time it runs perfectly, but only in window mode.

sebastiaan

The main difference between fullscreen and window mode is that some back-ends use OpenGL (a library for hardware accelerated graphics) in fullscreen mode. You could try to disable OpenGL by switching to the legacy back-end, or setting 'Use OpenGL' to 'no' in the back-end settings for xpyriment.

See also:

• http://osdoc.cogsci.nl/back-ends/about/

Does that resolve the issue?

Cheers,
Sebastiaan