32 and 24 bpp have the same color resolution (only 24 bits).
If what you are seeing is banding, it's probably a driver issue.
Laptop panels typically only have 18 bits of color resolution
and this becomes visible if the graphics hardware isn't dithering
from 24 => 18 bits. At least in the case of the "nv" driver for
NVIDIA chips, there is an Option "FPDither" to turn that on. I
don't know if other drivers support such options.
Mark.
On Thu, 30 Oct 2003, Romain MULLER wrote:
> I'm quite a noob on Linux (and so with XFree86), and I'm asking myself if it
> is possible to set color depth up to 32bpp or not ... In fact, all my JPEG
> pictures that look pretty good on Windows (32b color depth) are ugly under
> Linux 24b color depth ... And as far as I know, the 24b color depth of my
> XFree may be in cause ... Any idea ? Maybe is it possible to force 32b color
> depth ?
>
> PS : I use a Mandrake 9.1 on a Compaq Presario 736 (S3 twister 16/32MB shared
> memory, 256MB RAM).
>
> Tidus, Looking forward your answer !!!
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