SUMMARY (unsolved) : colormap problems on an ultra2

From: Amol Karnik (
Date: Wed Aug 26 1998 - 09:17:06 CDT

hi all,

received only 3 replies to my original question ( which is included at
the end of this email)
thanks to
Scott F. Woods <>
Patrick Goetz <>
Bismark Espinoza <>

for their help in this.

the things i should check for are the output of /usr/sbin/ffbconfig
Check the device links to the new video board and add the driver for the
new video board.

also check the output of xdpyinfo
The key is the depth: "depth of root window: 24 planes "
This says that there are 24 bit planes of color, or 2^24 = 16 million
otherwise known as "true color". If your xdpyinfo reports a depth of 8,
then you only have 256 colors.

well, the problem still remains unsolved unfortunately, as i really dont
have much insight into this and various X and ffb faqs failed to tell

the xdpyinfo did in fact actually show that the default colormap was
i have no idea what this means, but on i know the same software works if
the colormap is 0x2f or 0x27. also the values for BlackPixel and
WhitePixel were 0 and 1677783 whereas on a machine on which there are no
problems, the values were 0 and 1 respectively.

does anyone know, how to change these values, for the colormap and the

a pointer to a source of info about such this would be greatly

the man pages dont seem to tell much either. xset wont do it too.



Amol Karnik          		   
Senior Development Engineer
Microcosm Technologies, Inc.   (617) 225-0094 x248
215 First St., Suite #2D       (617) 621-7838 FAX
Cambridge MA, 02142  

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