OpenGL context creation failed!

1

Hi,


I set up a Ubuntu/Win7 dual boot and want to run Psychtoolbox on Ubuntu on a dual monitor system with the stimulation running on the 2nd monitor.

First, are there any synchronization problems under in linux with the 2nd monitor?

Second, I managed to install the toolbox, but when I run 


white = WhiteIndex(screenNumber)


from the tutorial, I get the following error:


PTB-WARNING: Redundant call to PsychScreenMapRadeonCntlMemory()! Ignored for now. This should not happen!


PTB-ERROR:[glXCreateContext() failed] OpenGL context creation failed!



PTB-ERROR[Low-Level setup of window failed]:The specified display may not support double buffering and/or stereo output. There could be insufficient video memory


I couldn't find a solution for this problem.

I spent days struggling with graphics cards, ubuntu installation, ubuntu graphic card installation, Matlab installation, and Matlab incompatibility issues with the latest linux NVIDIA drivers etc etc, so I don't know if any of those workarounds is causing the problem.

 
cheers!


2
You'll need to provide more information. exact graphics hardware, drivers used, ubuntu version and matlab version would be helpful.

Cheers,
Dee

On Mon, Aug 29, 2016 at 3:30 PM, etkfgllgp3axn33hetkdmxtuq4lhojozmntfp3mm@... [PSYCHTOOLBOX] <PSYCHTOOLBOX@yahoogroups.com> wrote:


Hi,


I set up a Ubuntu/Win7 dual boot and want to run Psychtoolbox on Ubuntu on a dual monitor system with the stimulation running on the 2nd monitor.

First, are there any synchronization problems under in linux with the 2nd monitor?

Second, I managed to install the toolbox, but when I run


white = WhiteIndex(screenNumber)


from the tutorial, I get the following error:


PTB-WARNING: Redundant call to PsychScreenMapRadeonCntlMemory ()! Ignored for now. This should not happen!


PTB-ERROR:[glXCreateContext() failed] OpenGL context creation failed!



PTB-ERROR[Low-Level setup of window failed]:The specified display may not support double buffering and/or stereo output. There could be insufficient video memory


I couldn't find a solution for this problem.

I spent days struggling with graphics cards, ubuntu installation, ubuntu graphic card installation, Matlab installation, and Matlab incompatibility issues with the latest linux NVIDIA drivers etc etc, so I don't know if any of those workarounds is causing the problem.


cheers!