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

[IMAP List Administration]

On 06/05/2015 12:19 AM, David Brownlee wrote:
> Have you tried MobaXterm?
>
> On my Thinkpad T420s (Intel gfx) booting into Windows 7, then running
> my NetBSD install in Virtual box and firing up an xterm using Moba as
> the X server reports:
>
> depths (7):   24, 1, 4, 8, 15, 16, 32
>
> The Personal version of MobaXterm is free :)
I have learned from trying the various MS-Win X-servers that that list of depths
is not particularly meaningful.

What does "xprop -root" say about overlays? Do you see a 4-plane visual, and
also a 4-plane overlay whose ID matches the 4-plane visual?

Rob