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Old 06-02-2005, 01:23 AM   #16
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I had a similar problem

I had a similar problem with my DELL C400 laptop. And I tried whatever mentioned above but with no luck.
It's trange that in "system settings->display" tab the "OK" buttons are disabled and I can't set the monitor type and the refresh rate...
I edited the xorg.conf but it seems not to work...

Old 06-02-2005, 09:54 AM   #17
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Originally posted by mcgrew
To be honest it doesn't usually matter what kind of monitor you have. Just choose Generic Monitor for the highest resolution you know it will support. Don't worry if you choose one too low, it won't hurt anything.
To be honest, it matters a lot what kind of monitor you have. And the HorizSync and VertRefresh part of the config file is the most important to getting the resolution correct, and those settings have everything to do with your monitor model. If the screen won't even display, your best bet, short of reinstalling Linux is to get ahold of a live CD (Knoppix, Mepis, whatever) and boot in and mount your already-installed partition. From there, you can edit the xorg.conf file.

As for how to get the live CD for recovery... you can use a friend's computer to burn an ISO of a live CD. Or you can go to the library and check out a book about Linux (Point-and-Click Linux has a Mepis CD in the back).

I found the horizontal and vertical ranges for my monitor at the manufacturer's website. You can probably find yours there, too.
Old 06-02-2005, 11:58 AM   #18
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I got back into Linux, so that's not the problem anymore. I want to be able to use 1024x768..

Anyway, I tried using a Live linux CD (both DSL and SuSE Live). Both of them would not let me edit the file, and gave me a permissions error..
Old 06-02-2005, 02:44 PM   #19
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Maybe this is a dumb question, but have you tried changing the permissions for those files? It's probably read/write for only the owner and users, not everybody.
Old 06-02-2005, 05:30 PM   #20
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If you know what refresh rates your monitory will support, you can use a modeline to set the refresh rate at 1024 x 768
using a modline calculator to find it.
for 43 Hz, this would be:
Modeline "1024x768@43" 43.49 1024 1056 1216 1248 768 784 790 807
an example monitor xorg.conf excerpt would be...
Section "Monitor"
	Identifier   "Generic Monitor"
	HorizSync    31.5 - 64.3
	VertRefresh  40.0 - 90.0
        Modeline "1024x768@43" 43.49 1024 1056 1216 1248 768 784 790 807

Section "Screen"
	Identifier "Screen"
	Device     "My Graphics Card"
	Monitor    "Generic Monitor"
	DefaultDepth     24
	SubSection "Display"
		Viewport   0 0
		Depth     24
		Modes    "1024x768@43"

Last edited by mcgrew; 06-02-2005 at 05:35 PM.


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