1280 x 800 video

[Derek Broughton]

Ed Cogburn wrote:

> Derek Broughton wrote:
> 
>> After much hassle, and the suggestion from someone here to use gtf, I got
>> my Dell Inspiron to display 1280 x 800 (the native resolution when I
>> started it up in Windows).
>> 
>> However, kdm comes up in a 1280x800 _virtual_ screen, on 1024x768
>> physical
>> pixels.  Then when I log in, I have to manually switch it to 1024x768 to
>> make the physical and virtual screens match, then set it back to 1280x800
>> to make it _really_ show the widescreen format.
>> 
>> What do I need to do to make the monitor automatically show 1280x800?
> 
> Do you have a virtual resolution setting in your xorg.conf?

Not explicitly, though Xorg.0.log shows:
(--) I810(0): Virtual size is 1280x800 (pitch 2048)

> A scenario where I see this could happen is you have set a virtual screen
> size of 1280x800 but X is unable to actually set the 1280x800 resolution
> later on, so it drops back to the first one it can, in this case 1024x768,
> but the virtual screen size setting is still in effect.  Have you looked
> at
> the Xorg log to see what error messages its showing?  

You bet.

> Its probably 
> rejecting the 1280x800 resolution for some reason, and instead taking the
> first one that looks good to it.

The key is "taking the first one"...  I thought kde was supposed to save its
resolution.  Changing the modes to: "1280x800" "1024x768", makes it come up
correctly!  Thanks.

>> Also, it seems I always had Ctrl-Alt-+ and Ctrl-Alt-- to change the
>> desktop size in Debian (though, since I rarely used it, perhaps it wasn't
>> always there).  How come this doesn't work in Kubuntu?
> 
> 
> Unfortunately, I customized my config early on for high-res gtf modes, so
> if ubuntu/kubuntu is doing something differently, I don't know what it
> would
> be.  The Alt- +/- keys work fine for me, if they don't it usually means
> only one resolution is being declared on the 'Modes' line.  If none of
> those modes work, Xorg will simply fall back to one that it autodetected
> or a VGA/VESA builtin mode, which could be the 1024x768 your seeing.

No combination of Alt, Ctrl, Shift, + and - gives me the ability to change
modes, even though the kcontrol settings let me switch at will.
-- 
derek