# Inescapable verbosity?

**URL:** <https://psychtoolbox.discourse.group/t/inescapable-verbosity/118>\
**Category:** Uncategorized\
**Created:** [February 27, 2017, 12:40pm UTC](https://psychtoolbox.discourse.group/t/inescapable-verbosity/118 "2017-02-27T12:40:13Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![jsdpag](https://avatars.discourse-cdn.com/v4/letter/j/85f322/32.png) [@jsdpag](https://psychtoolbox.discourse.group/u/jsdpag)\
**Post date:** [February 27, 2017, 12:40pm UTC](https://psychtoolbox.discourse.group/t/inescapable-verbosity/118/1 "2017-02-27T12:40:13Z")

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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

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**Author:** ![mariokleiner](https://avatars.discourse-cdn.com/v4/letter/m/13edae/32.png) [@mariokleiner](https://psychtoolbox.discourse.group/u/mariokleiner)\
**Post date:** [February 27, 2017, 2:36pm UTC](https://psychtoolbox.discourse.group/t/inescapable-verbosity/118/2 "2017-02-27T14:36:07Z")

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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

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**Author:** ![jsdpag](https://avatars.discourse-cdn.com/v4/letter/j/85f322/32.png) [@jsdpag](https://psychtoolbox.discourse.group/u/jsdpag)\
**Post date:** [February 28, 2017, 4:12pm UTC](https://psychtoolbox.discourse.group/t/inescapable-verbosity/118/3 "2017-02-28T16:12:48Z")

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Thanks!