XFree86/KDE having disagreement ?
 

Hello, I suppose this is a common tale :

... xf86config .... intel 810 ... doesn't work ...

... go to intel website read about driver source and the need to recompile kernel ... :(

... cop out and choose "unsupported vga" instead. Now x works but only at 320*200*8, which I can cope with. However when I start KDE the KDE windows are far too long/wide, and the mouse will not move the physical 320*200 around the far larger software window, as it has in the other x86/KDE builds I have used. I can't access the bottom part of any window. I suspect this has something to do with xwindows and KDE having a little bit of a misunderstanding, but this is just a guess since I really don't know what I'm doing.

Is there any fix ? I am not confident enough to tackle a kernel compile.

The build is Zipslack version of slackware, kernel 2.2.14 perhaps (not sure about this) with recent versions of xfree86 and KDE tacked on.

Look into your /etc/X11/XF86Config-4 file and look for "Virtual Resolution". In your case it's a good idea to have it, for example:
VirtualResolution 1024 768

BTW Kernel compilation isn't very hard. You can use predefined config (coming from your distro) and only change what's needed. Then you only wait for your machine to compile...

Thanks Mara, but ...
 

After doing several xf86configs, I do not have an XF86Config-4 file.

Just a plain old XF86Config file, which has no virtual resolution entry in it at all.

Perhaps there is an xterm command ? Or some other way ? Can I put this virtual resolution entry in plain old XF86Config file ?

If you don't have XF86Config-4 it means you're running XFree version 3.3.6 or older. In such case, XF86Config is the configuration file.
BTW It's much easier to find drivers for Xfree version 4.x than 3.x now...