Screen() error; no display

Hello,

Not a bug, but I’ve recently installed the most recent version of PTB3 and the Screen() function doesn’t seem to work properly. It was operating fine in the same device. Everything else seems to work well, including the audio function and I/O. When I run the program, which should have audio and the corresponding screen displayed at the same time, only the audio works and no display. The program doesn’t fail or gets stuck otherwise.

The only difference I’ve found so far is the PTB3 version. The one that was working was of version: ‘3.0.19.646043609’

The newer one is ‘3.0.19.647248764’

When I tried to install the old version (dug through the Recycle Bin and found an old copy), the program automatically implements the updates and I’m not sure if this truly is the issue.

So far, I’ve deleted and reinstalled MATLAB, tried installing different versions of MATLAB, and tried deleted all the related files before reinstalling so there’s no interference. What else can I try?

Any suggestions would be greatly appreciated.

What operating system? Have you tried running some of the demos that
come with PTB instead of your own code and do they show the same
behavior? Do you have more than one monitor connected? Try without the
extra monitor.