X11 expertise on ancient HW sought... (4-plane visual (overlay) via X-server on MS-WIndows)

Dimitris Theodoropoulos dimitris.theo.gr at gmail.com
Wed Jan 31 02:21:02 CST 2018

I believe that my case is identical to the original message of the list and
24-bit is required.
The problematic visual (the one which is not provided by the external
X-server) is the following (I cite an extract from xdpyinfo on the original

*  visual:*
*    visual id:    0x36*
*    class:    PseudoColor*
*    depth:    4 planes*
*    available colormap entries:    16*
*    red, green, blue masks:    0x0, 0x0, 0x0*
*    significant bits in color specification:    4 bits*

At another part of xdpyinfo, I also get the following info:

*screen #0:*
*  dimensions:    1280x1024 pixels (342x274 millimeters)*
*  resolution:    95x95 dots per inch*
*  depths (4):    8, 12, 24, 4*

Please forgive my technical ineptitude, in case I did not answer your
question, but I am not experienced in this domain.
D. Theo

2018-01-30 12:42 GMT+02:00 David Brownlee <abs at absd.org>:

> On 29 January 2018 at 14:22, Dimitris Theodoropoulos via cctalk
> <cctalk at classiccmp.org> wrote:
> > Sorry for undiggind this subject so many years later, but have you found
> a
> > solution to your problem? I am facing exactly the same issue, and i have
> > tried all possible windows X server options without success. The only
> > possibility I am working with is with a Mac OS X server, which reports a
> > 5-bit visual.
> What bit-depth do you require on the X-server?
> David

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