On Fri Nov 01 2002 at 10:55, Margaret_Doll wrote:
> I have a Dell 330, Intel Pentium 4 CPU 1400MHz, 256 KB cache on which
> I would like to use 24 colors on a 1024x768 screen size. The current
> system is 2.4.18-10.
There has been an update to that kernel.
> I can set the system to
>
> Subsection "Display"
> Depth 24
> Modes "640X400"
>
> or to
> Subsection "Display"
> Depth 8
> Modes "1024x768"
>
>
> The Driver "accel"
> Device "RIVA TNT2"
> Monitor "DELL P991"
>
> Is there any way through the software that I can enable 24 colors on a
> 1024x768 screen size?
Yes.
Do it like this:
Section "Screen"
Driver "accel"
Device "RIVA TNT2"
Monitor "DELL P991"
DefaultDepth 24
Subsection "Display"
Depth 16
Modes "640x480" "800x600" "1024x768" "1152x864" "1280x1024" "1600x1200"
EndSubsection
Subsection "Display"
Depth 24
Modes "640x480" "800x600" "1024x768" "1152x864" "1280x1024" "1600x1200"
EndSubsection
EndSection
This will set 24bit by default, and allow use of a number of
possible resolutions, accessable by using Ctrl-Alt-[grey+/-]
The default resolution is usually determined by the highest one that
the monitor is capable of doing. If your monitor is not capable of
doing some of the modes that are specified, it doesn't matter since
they will simply be ignored.
So how does the XFree86 driver know what your monitor is capable of?
> Going through Xconfigurator doesn't work.
It's ok for general setup, nor for tweaking. (Xconfigurator is
depreciated in rh80 anyway:)
> When I purchase systems, how can I tell whether the monitor and system
> is capable of 24 colors on a 1024x768 screen?
All video cards with 1Mb ram or more can do that resolution (and
better), and display in 24 colours if there is more than about 2Mb
on it. And just about any monitor can do 1024x786, even old 14"
sizes. You'll be hard pressed to find a system that _cannot_ do at
least 1024x768x24bpp :)
Overall, the limiting factor is your monitor capabilities... the
monitor specifications are the key to configuring the maximum
possible resolution that the XFree86 driver will use.
For example, this is what I have:
Section "Monitor"
Identifier "PHILIPS 109S"
VendorName "Philips"
ModelName "Philips 109S Monitor"
HorizSync 30.0-95.0
VertRefresh 50.0-160.0
Option "dpms"
EndSection
It is the HorizSync and VertRefresh settings that will determine the
resolution limits. I have a 15" monitor that needs these settings:
HorizSync 30.0-60.0
VertRefresh 50.0-110.0
so the max resolution is smaller than my 19" monitor.
> Thanks for any information.
Hope this helps. It isn't such a mystery once you get the idea of
how it all works.
Cheers
Tony
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