freeview doesn't open when ssh -X'd from mac

[toddt]

When I log into ba3 using ssh -X from a mac, I can't open freeview. People are able to open freeview when ssh'ing in from a linux system, or using vnc.

---

from iTerm on a mac:

ssh -X ba3.mit.edu
(initialize freesurfer stuff)

$ which freeview
/software/Freesurfer/5.0.0/bin/freeview

$ freeview
Xlib: extension "RANDR" missing on display "localhost:18.0".
The program 'freeview.bin' received an X Window System error.
This probably reflects a bug in the program.
The error was 'BadValue (integer parameter out of range for operation)'.
(Details: serial 19 error_code 2 request_code 146 minor_code 3)
(Note to programmers: normally, X errors are reported asynchronously;
that is, you will receive the error a while after causing it.
To debug your program, run it with the --sync command line
option to change this behavior. You can then get a meaningful
backtrace from your debugger if you break on the gdk_x_error() function.)

[satra]

this problem does not exist when i connect to mgh (uses centos) using the same method.

[satra]

Update: i think this has something to do with the drivers installed on the machine.

$ ssh -Y ba3
$ . fss cvs
Setting FSLDIR to /usr/share/fsl/4.1
-------- freesurfer-Linux-centos5_x86_64-dev-20110923 --------
Setting up environment for FreeSurfer/FS-FAST (and FSL)
FREESURFER_HOME /software/Freesurfer/cvs
FSFAST_HOME /software/Freesurfer/cvs/fsfast
FSF_OUTPUT_FORMAT nii.gz
SUBJECTS_DIR /software/Freesurfer/5.1.0/subjects
MNI_DIR /software/Freesurfer/cvs/mni
FSL_DIR /usr/share/fsl/4.1
You are now set up to use Freesurfer cvs.
$ which freeview
/software/Freesurfer/cvs/bin/freeview
$ freeview
X Error: BadValue (integer parameter out of range for operation) 2
Extension: 150 (Uknown extension)
Minor opcode: 3 (Unknown request)
Resource id: 0x22
Abort

$ glxgears
Error: couldn't get an RGB, Double-buffered visual

this problem does not happen on the machine 'computor' which has nvidia drivers installed.

[satra]

thanks matt

you can see glxgears working in NX if you type:
export LIBGL_ALWAYS_INDIRECT=yes
in the terminal before running glxgears. it's not fast, but it works. i think the same holds true for VNC.
-matt