Thanks a lot, I have tried this one. It does not work.

I knew someone can solve this problem on a local machine by extracting a NVidia driver files and copying it to somewhere to overwrite some original OpenGL files. But I do not want to do this procedure on each computer in our labs.

From: ppj@netfilter.com.br Date: Wed, 5 Aug 2009 11:21:43 -0300 Subject: Re: [Freesurfer] "redraw failed: no gl window open" problem To: freesurfer_zg@hotmail.com CC: freesurfer@nmr.mgh.harvard.edu

setenv doublebufferflag=0tksurfer bert lh inflated----------------------------------------------------------- Pedro Paulo de M. Oliveira Junior

2009/8/5 Guang Zeng freesurfer_zg@hotmail.com

Hi, there,

I am running the tksurfer command to view the cortical surface data as tksurfer bert lh inflated. But I met a problem. I only can view a sliver part of the brain. This sliver portion can rotate and do everything that tksurfer is supposed to do,

but I can't view any more of the brain than a tiny piece. Tkmedit works fine.

When I run the command, it gave me something like this:

surfer: current subjects dir: /home/m047599/freesurfer-install/freesurfer/subjects

surfer: not in "scripts" dir ==> using cwd for session root surfer: session root data dir ($session) set to: surfer: /home/m047599/freesurfer-install/freesurfer surfer: Reading header info from /home/m047599/freesurfer-install/freesurfer/subjects/bert/mri/T1.mgz

surfer: vertices=131369, faces=262734 Loading /home/m047599/freesurfer-install/freesurfer/surface_labels.txt surfer: ### redraw failed: no gl window open surfer: single buffered window surfer: tkoInitWindow(bert)

surfer: using interface /home/m047599/freesurfer-install/freesurfer/lib/tcl/tksurfer.tcl Reading /home/m047599/freesurfer-install/freesurfer/lib/tcl/tkm_common.tcl Reading /home/m047599/freesurfer-install/freesurfer/lib/tcl/tkm_wrappers.tcl

Reading /home/m047599/freesurfer-install/freesurfer/lib/tcl/fsgdfPlot.tcl Reading /home/m047599/freesurfer-install/freesurfer/lib/tcl/tkUtils.tcl Successfully parsed tksurfer.tcl reading white matter vertex locations...

I searched the previous posts, it looks like somebody have the same problem. There is no NVidia and native Linux system on my computer. I run tksurfer on a virtual Linux machine using NX 3. 3. 0. 6. I ran the xdpyinfo | grep GL, it shows that I have GLX and SGI-GLX.

I ran the glxgrears, it works, although very slow.

So, how can I solve this problem, any suggestions are highly appreciated.

Thanks a lot!

Guang

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