Re: [Thinkpad] 600X display problem Win98SE

Well, here I go again...
Very informative, but INTELLECTUALLY speaking,
HE HAS THE WRONG FREAKING VIDEO DRIVER INSTALLED.
AND
it is a 2.5 meg video card, which does run 1024X768 16 bit color.
----- Original Message -----
From: "Michal Pasternak" <michal@pasternak.w.lub.pl>
To: "Dr. Jeffrey Race" <jrace@attglobal.net>
Cc: "Thinkpad Users Group" <thinkpad@stderr.org>
Sent: Monday, August 18, 2003 12:21 AM
Subject: Re: [Thinkpad] 600X display problem Win98SE

> Dr. Jeffrey Race [Sun, Aug 17, 2003 at 11:43:51PM +0700]:
> > Now I have the PCMCIA slots working. Next problem: some software won't
> > install because the display is 16 colors.
> >
> > When I go to the display option in Control Panel, it reads:
> >
> > Laptop Display Panel (1024x768) on Standard PCI Graphics Adapter (VGA)
> >
> > I am offered two color depth options, 2 and 16.
> >
> > What is wrong please, and what is the fix? And how did it get to be
> > this way? (Result of installing from 600E recovery disk again?)
>
> Computers store information internally using bits, bytes, words and such.
>
> One bit can be either 0 or 1 - that's 2 possible values. Two values. One
or
> zero. Binary system.
>
> 2 bits can be 00, 01, 10, 11 in binary - that's 0, 1, 2 and 3 in decimal,
> which gives you 4 possible values.
>
> 3 bits can be 000, 001, 010, 011, 100, 101, 110, 111. 8 different values,
> ranging from 0 to 7.
>
> To encode [x] colors you need [x] possibilities to save their values.
Thus:
>
> 0.5 byte = 4 bits = 16 different numbers
> 1 byte = 8 bits = 256 different numbers
> 1 word = 2 bytes = 16 bits = 65536 different numbers
>
> Generally 2^n gives you the answer to ,,How much different values can I
> write using n bits''.
>
> Now, the practical part:
>
> 1024x768x0.5 = 393216 bytes of video card RAM are needed to use 1024x768
> in 16 colours (4-bit colour depth)
>
> 800x600x1 = 480000 bytes of video RAM needed to use 800x600 with 256
colours
> (8-bit colour depth)
>
> 800x600x2 = 960000 bytes of video RAM needed to use 800x600 with 64K
colours.
> (16-bit colour).
>
> The term ,,colour depth'' is often also named ,,bpp'' (bits per pixel).
>
> Divide byte values by 1024 to know, how much kilobytes is this. Divide
them
> by 1024*1024 - that will give you number in megabytes.
>
> So, you either have too small video RAM to use 1024x768 in color depth
> bigger than 4 bits (16 colors), or you have invalid video card driver
> installed. Anyway, as you restored from a proper rescude disk, I suppose,
> that the driver can be all right, but I'd check it, if it's properly
> installed anyway.
>
> I guess the solution seems obvious now, doesn't it?
>
> Regards,
> --
> mp
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Received on Mon Aug 18 00:42:29 2003