When using my Intel Stick I have experienced several problems. One of them is a semi-working graphics in the GNU Octave. The installer warned me that it is not fully forking. And it was right, unfortunately. The plot command freezes the program.
The solution is quite straightforward: replace the default graphics backend (Qt) by something different (the FLTK backend works).
Just find the file octave-home/share/octave/site/m/startup/octaverc. The octave-home is probably something are C:\Octave in the common operating system (which name starts with W).
A single line should be added to that file:
Thats all. Now your graphical outputs should work as expected. But I will still prefer to use Octave 2.0 on the IRIX…