just completing this thread. our sysadmin found a solution that works well for us:

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


cheers,

satra


On Tue, Sep 27, 2011 at 8:40 PM, Satrajit Ghosh <satra@mit.edu> wrote:
hi,

we are seeing a strange freeview issue at mit and just wanted to check if anybody else has seen this. we are running natty narwhal (ubuntu 11.04).

details here:

https://github.com/gablab/mindhive/issues/1

cheers,

satra