How can I change BPP (bits per pixel) in KDE?

[Donn]

> I'm running on a 1280x1024 LCD monitor.  All references tell me that this
> resolution automatically uses 32 bits.
>
Robert, this might help a little:
Open the file /etc/X11/xorg.conf in an editor (as root *) and check for 
something like this:

SubSection "Display"
 Depth 24
 Modes "1680x1050" "1280x1024" "1024x768" "800x600" "640x480"        
EndSubSection
SubSection "Display"
  Depth   32
  Modes  "1680x1050" "1280x1024" "1024x768" "800x600" "640x480"
EndSubSection

You can add new sections like that. This is from my file and I have no 
problems with colour. 

After that, you must restart X, so save all your work and press ctrl + alt + 
backspace. Then login again and test your new settings.

Lemme know how it goes.
hth
/d
*
Alt-F2, type:
kdesu kate /etc/X11/xorg.conf
Press enter.