Inescapable verbosity?

1
Dear PTB community,

When you first use the Screen function after launching Matlab, you might get the following kind of initialisation messages:

PTB-INFO: Display ':0' : X-Screen 0 : Assigning primary output as 0 with RandR-CRTC 0 and GPU-CRTC 0.
PTB-INFO: Display ':0' : X-Screen 1 : Assigning primary output as 0 with RandR-CRTC 0 and GPU-CRTC 1.
PTB-INFO: A total of 2 X-Windows display screens is available for use.


Is there any way to suppress these messages? Ironically, these messages appear even when Screen ( 'Preference' , 'Verbosity' , V ) with V equal to 2 or less is the first PTB function that is executed after Matlab starts up.


Normally this wouldn't be an issue. However, I am launching up to 8 parallel Matlab processes that each query screen properties using Screen( ), although only one of them opens a window for drawing/flipping. The result is that my own diagnostic messages are getting lost in a swamp of PTB-INFO messages.


Best,

Jackson

2
PsychTweak('ScreenVerbosity', 2); before first Screen invocation would get rid of the first 2 lines, but you can't get rid of the "Total of 2 X-Screens..." message atm., sorry.

The next PTB beta release will omit those messages completely by default, as they are usually not that interesting to end users.

-mario
3
Thanks!