GRASS on the Data General

[Michael Shapiro]

This is just a note  anticipating  those  who  may  have  trouble
running  grass  on a 24 bit Data general Aviion. This machine has
many visuals and the GRASS XDRIVER  currently  assumes  that  the
default  visual  is a PseudoColor Visual. (You can find out which
visuals your server supports and which is the  default  with  the
command  xdpyinfo).  If  the  default visual is not a PseudoColor
visual with 256 colorcells, you need to run the X server with:

	-cc 3

added to the command line. If you are running xdm (which I  think
is  the common way these machines are used) one of the things xdm
does, apart from the login interface, is to start X. It looks  at
the file:

	/var/X11/xdm/Xservers

which contains the information needed for  xdm  to  start  the  X
server and pass options to it. If your entry for :0 does NOT have
-cc 3 on this line, add it. For example, if it looks like:

    :0 local /usr/bin/X11/X :0 bc

add -cc 3:

    :0 local /usr/bin/X11/X :0 bc -cc 3

You will need to be the user root to do this. To get  the  server
restarted,  logout  (so the xdm login window reappears) and click
on restart. This will restart the X server with the -cc 3 option.

The XDRIVER for GRASS should work now.