X resolution

Warren Block wblock at wonkity.com
Wed Nov 17 00:15:25 UTC 2010

On Tue, 16 Nov 2010, Andrea Venturoli wrote:

> Hello.
> I've configured my X to use a 1600x1200 resolution (or so I thought...).
> It used to work until the last X.Org upgrade; after that it *usually* worked: 
> very rarely it would start at 2048x1536, but a couple of Ctrl-Alt-Backspace 
> was normally enough.
> Since a couple of day, it always start at 2048x1536, and there is no way to 
> get 1600x1200 unless I login and change resolution afterwards (which is 
> however enought to mess all my KDE fonts up).

It sounds like the EDID information isn't always working. Check your 
video cable to see if a pin is bent over, or try a different one.

> I've got this in my xorg.conf:
> Section "Screen"
> 	Identifier "SyncMaster"
> 	Device     "Card0"
> 	Monitor    "SyncMaster"
> 	SubSection "Display"
> 		Viewport   0 0
> 		Depth     32
>                Modes      "1600x1200"
> 	EndSubSection
> EndSection

32 is not a valid depth, according to xorg.conf(5).

> Of course I can provide full xorg.conf and Xorg.0.log, but they are quite 
> long...

xorg.conf is usually not a problem.  Log files can be posted on the web 
somewhere, like pastebin.com.

> Card is a Radeon HD 4200.

What is the monitor?

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