can not allocate any read/write color cells

[Markus Neteler]

Hi Horacio,

as you write: you still have 8 bit color depth. So it
is no surprise that there is no problem solution (even
with new hardware!).

As mentioned in another mail you have to tell you
X-server to run in 15/16/24 bit (as you like).
Now it is just a small software configuration problem.

Use .xserverrc to adjust the depth. Here you find some
hints:
http://www.geog.uni-hannover.de/grass/faq/allocate_colorcell.html

Then it will work (it is not a GRASS problem but a X-configuration
problem).

Best wishes

 Markus

On Wed, Apr 12, 2000 at 11:00:23AM -0400, Horacio wrote:
> Markus Neteler wrote:
> 
> > Hi,
> >
> > to check the current settings of your video
> > card
> >  - start X
> >  - run: xdpyinfo
> >
> > Please tell me what you get (especially "color depth").
> >
> > Note: Today I have put an XDRIVER update in CVS (for GRASS 5 beta7)
> >       written by Carl Anderson. He updated to run the XDRIVER
> >       on various platforms with various color depth without
> >       problems!
> >
> > On Tue, Apr 11, 2000 at 06:22:06PM -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
> > > work?
> > >
> > > I'll appreciate any help.... and will sum.
> > >
> > > Thanks,
> 
> Hi Markus,
> 
> This is the tail of the xdpyinfo... it seems that i have 8 depth
> 
> Any thought?
> 
> Thanks in advance...
> 
> Horacio
> +++++++++++++++xpdyinfo.output+++++++++++++++
> screen #0:
>   dimensions:    1280x1024 pixels (433x347 millimeters)
>   resolution:    75x75 dots per inch
>   depths (2):    1, 8
>   root window id:    0x2a
>   depth of root window:    8 planes
>   number of colormaps:    minimum 1, maximum 1
>   default colormap:    0x21
>   default number of colormap cells:    256
>   preallocated pixels:    black 0, white 1
>   options:    backing-store YES, save-unders YES
>   largest cursor:    64x64
>   current input event mask:    0x58207f
>     KeyPressMask             KeyReleaseMask           ButtonPressMask
>     ButtonReleaseMask        EnterWindowMask          LeaveWindowMask
>     PointerMotionMask        ButtonMotionMask
> SubstructureNotifyMask
>     SubstructureRedirectMask PropertyChangeMask
>   number of visuals:    6
>   default visual id:  0x22
>   visual:
>     visual id:    0x22
>     class:    PseudoColor
>     depth:    8 planes
>     available colormap entries:    256
>     red, green, blue masks:    0x0, 0x0, 0x0
>     significant bits in color specification:    6 bits
>   visual:
>     visual id:    0x23
>     class:    DirectColor
>     depth:    8 planes
>     available colormap entries:    8 per subfield
>     red, green, blue masks:    0x7, 0x38, 0xc0
>     significant bits in color specification:    6 bits
>   visual:
>     visual id:    0x24
>     class:    GrayScale
>     depth:    8 planes
>     available colormap entries:    256
>     red, green, blue masks:    0x0, 0x0, 0x0
>     significant bits in color specification:    6 bits
>   visual:
>     visual id:    0x25
>     class:    StaticColor
>     depth:    8 planes
> 
> 

-- 
Dipl.-Geogr. Markus Neteler *  University of Hannover
Institute of Physical Geography and Landscape Ecology
Schneiderberg 50 * D-30167 Hannover * Germany
Tel: ++49-(0)511-762-4494  Fax: -3984