Blank screen during presentation of E-Prime experiment on projector

[David Hairston]

So is it safe to assume that the only difference between when it "works"
and when this occurs is the use of the 2nd video out on the laptop? AKA,
it is the same laptop, same program in the same location, etc? Is there
ANY other equipment plugged into the laptop when you are running the
fMRI?

If so, my first suspicion would be something between the drivers for the
video card and the projector.
Try and run it w/ some other random monitor, see if it continues to
occur. That will isolate whether it is related to *that* projector (AKA
some weird driver issue) or is more related to the dual-video functions
of the ATI card.
Q - is the output to the projector a "clone" of the laptop display, or
an extension of it?


-----Original Message-----
From: eprime at mail.talkbank.org [mailto:eprime at mail.talkbank.org] On
Behalf Of Boris Volfson
Sent: Thursday, July 27, 2006 11:24 AM
To: eprime at mail.talkbank.org
Subject: Blank screen during presentation of E-Prime experiment on
projector

I was wondering if anyone has encountered the following problem.

I am currently piloting a very simple E-Prime experiment with an fMRI.
The experiment seems to work perfectly on the laptop, however when I
connect it to the projector that is used to display the E-Prime
experiment I noticed a problem.

I am using a Pentium M, 1700 Mhz, with an ATI MOBILITY RADEON 9000.

The problem is that I get an unexpected blank screen during the
experiment. The blank screen happend four times (out of four pilot
experiments) at what appeared to be random times. It was on both the
projected image and on the laptop. They also lasted for different times
(anywhere from a few seconds to over a minute). This happend with both
an experiment that only had text display and an experiment that had
display of text and bmp pictures. As far as I know the projector works
fine for other people.

Does anyone has any suggestions?