Adxv

The ADXV program can be downloaded from http://www.scripps.edu/tainer/arvai/adxv.html

What if the Image Window doesn't refresh correctly under x2go ?

https://wiki.x2go.org/doku.php X2go is based on an old version of the NoMachine NX libraries. These had a bug which must be worked around.

You may have try adding an option to /etc/x2go/x2goagent.options ; earlier versions of the NX software required the following addition to /usr/NX/etc/node.cfg :

AgentExtraOptions="-defer 0"

Finally, try using "adxv -nopixmap"