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Re: Why is setting up X so arcane?



In article <[🔎] 20010628125854.C19417@harmony.cs.rit.edu>, D-Man wrote:
> | If I reboot into Windows NT, the thing displays 1024 x 768 quite 
> | happily.
> | 
> | I have studied the stderr output of xinit, and it says
> | (--) VGA16: clocks: 25.17 28.32 28.32 28.32
> | (--) VGA16: Maximum allowed dot-clock: 90.000 MHz
> | (**) VGA16: Mode "640x480": mode clock =  25.175, clock used =  
25.170
> | (--) VGA16: There is no defined dot-clock matching mode "800x600"
> | (--) VGA16: Removing mode "800x600" from list of valid modes.
> | (--) VGA16: There is no defined dot-clock matching mode "1024x768"
> | (--) VGA16: Removing mode "1024x768" from list of valid modes.
> | (**) VGA16: Virtual resolution set to 800x600
> | 
> | Where do I go from here?
> 
> You are using the VGA16 driver here.  Not too fun.  Try stepping up 
to
> the SVGA driver or even the S3 driver, since you have an S3 card.  

Tried both of these. Both locked my machine solid.

> The problem given above is that there is no modeline in the Device
> section that specifies "800x600" or "1024x768", but you said you
> wanted to use it in the Screen section.  Use XF86Setup, or something,
> and pick the SVGA or S3 card and you will get lots of modelines (a
> good thing).

There were lots of modelines specifying these resolutions. The problem 
appears to be that none of these modes matches the available 
dot-clocks.

> Summary : use 'vim' (or other editor) to setup the 
/etc/X11/XF86Config file
> properly and use Alt-Ctrl-Del to reboot, not the power button.

I would love to use vi to set the config file up properly, if I could 
find the information I need to do so. I don't know what clock chip is 
on my video card, and asking XF86Setup to probe it causes the machine 
to hang. When the machine hangs, Ctrl-Alt-Del has no effect, and all 
ssh sessions in to the machine go dead (no character echo when you type 
stuff).

-- 
Nikki Locke, Trumphurst Ltd.      PC & Unix consultancy & programming
nikki@trumphurst.com              http://www.trumphurst.com/




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