can not allocate any read/write color cells
rghydro at waterwatch.com
Tue Apr 11 22:51:49 EDT 2000
On Tue, 11 Apr 2000 18:22:06 -0400, Horacio wrote:
>I just upgraded my video card + monitor but can't get to display any
>graphic in grass...
>I get the following error:
>GRASS: > d.mon start=x0
>can not allocate any read/write color cells
>I'm sure that it is a very simple thing about the card setting or
>somthing... can somebody tell me what i should do to get the display
>I'll appreciate any help.... and will sum.
Your problem is likely caused by not having set the color depth correctly
when you configured the Xserver for your new card and monitor.
To see what color depth your system is in, while in X-display mode, type
xdpyinfo. If it returns 8 bit depth, then video-ram permitting, increase the
color depth to 16, 24 or 32 bits. I do this (plus I adjust for changing screen
resolutions on-the-fly with cntr-alt-+) by hacking inside the Xconfiguration file
(but be careful in there!).
In 1998, Markus Neteler suggested the following:
1. Create the file .xserverrc (with a text editor) if it does not already exist in
your home directory.
2. At the end of the file, you should see (or create) something like this:
exec X :0 -auth .Xauthority -bpp 32 $*
exec X :0 -bpp 32 $*
where -bpp 32 (or -bpp 24 or -bpp 16 for ram deprived machines)
establishes the color depth used the next time Xserver starts.
Best of luck,
RG Hydro-Environmental Ltd.
WaterWatch ..... independent groundwater research
Richard Gagne, P.Geo., President
PO Box 25099
Halifax, NS Canada B3M 4H4
e-mail: rghydro at waterwatch.com
phone: (902) 457-7010
fax: (902) 457-3934
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