I believe you are correct, that the poor card is the most likely culprit. The Matrox G200 range are not good at anything graphically intensive. If you have adequate permission you could try updating the drivers. (http://www.matrox.com/graphics/en/support/drivers/latest/)

Also, try running 'glxinfo' on your PC. If you get output that says something along the lines of "extension GLX missing on display" than switching to use an X server that supports glx may solve the issue. If you get valid output (doesn't complain about "missing glx") than the card on your cluster is the problem and Im afraid you might be stuck :(

-Zeke

On 03/21/2013 12:27 PM, Xue Zhang wrote:

thanks, Zeke I use SSH Secure Shell to make the connection, and before I have used xmanager(I was told xmanager can do OpenGL rendering on my local machine, the protocol I used in xmanager is also ssh), maybe the protocol is incorrect? does OpenGL have any hardware requirment? I'm wondering whether the poor video card on cluster lead to this problem.

thanks again Xue Zhang

At 2013-03-21 21:57:12,"Z K" zkaufman@nmr.mgh.harvard.edu wrote:

...

Hello Xue,

Via what method are you remotely accessing the Linux cluster? (VNC, cygwin, etc) I am not sure if it's your X client or the X server, but one of them, or maybe both, possibly lack support for OpenGL.

If you aren't already using a VNC system that there I would try that option first.

If you are using VNC and not having any luck, than another potential solution is try downloading and install Xming from this page: http://www.straightrunning.com/XmingNotes. (Try using the version with the PuTTY SSH Client). Xming is a X server for Windows and all OpenGL rendering will be performed on your local machine, which could potentially be quite slow, but may be adequate for your needs.

Hope this helps.

-Zeke

On 03/20/2013 11:17 PM, Xue Zhang wrote:

...

dear freesurfer experts, I tried to install freesurfer in a remote linux cluster, when I completed the installation, and began to run the freesurfer gui use my own windows PC, the command line showed erro belowing information :

[wanglhlab@node01 freesurfer]$ tkmedit bert orig.mgz GLUT: Fatal Error in tkmedit.bin: OpenGL GLX extension not supported by display: localhost:11.0

could anyone tell me the reason why my installation failed? The video card on cluster is Matrox Graphics, Inc. MGA G200eW WPCM450 (rev 0a), my own PC video card is AMD Radeon HD 7800 Series.

regards

Xue Zhang

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