how come Sys -> Adm -> Display can't see the full resolution?

Dave Burns tburns at
Mon Jul 14 04:48:37 UTC 2008

Sorry for top posting, but I'm really responding just to the subject,
not the body text.

I had a similar problem, display panel did not make all valid
resolutions available, and further, it would not properly update the x
config if I made a coice and saved. Turns out it was due to the nvidia
card on the laptop I was tweaking. Fedora ships with a barely usable
nvidia driver, it somehow conflicts with the display panel. If you go
to nvidia's web site you can download some evil proprietary code that
works, but requires that you use something other than the usual
display panel to do resolution changes. I'd be surprised if Intel
pulled the same trick as nvidia, but it might be worth a look.

For troubleshooting, I would copy the x config file, fiddle around in
the display panel, then compare the new config with old. Modification
date always showed it had been changed, but the actual contents
usually did not change, and if it did change, it often did not
correspond to choices I'd made in the panel. Confusing!

Hope that's a clue.


On Sat, Jul 12, 2008 at 10:13 AM, Beartooth <Beartooth at> wrote:
> On Fri, 11 Jul 2008 15:48:56 -0400, Robert P. J. Day wrote:
>> (by way of intro, i got to this point after pretty much trashing my X
>> setup trying to get googleearth to run properly, and finally putting the
>> bits and pieces back together enough to restore a normal X session.
>> grrrrr.  we'll be getting to that little adventure shortly.)
>>   scenario:
>>       gateway mx8711 laptop
>>       1440x900 res display
>>       intel 945GM video controller
>> at the moment, the system really is running at full 1440x900, but only
>> because it's set that way via:
>>   System -> Preferences -> Hardware -> Screen Resolution
>> which is set to 1440x900 and Laptop 17".
>>   however, what i don't understand is why i can't select that
>> resolution via
>>   System -> Administration -> Display  (system-config-display)
>> which lets me go only as high as 1024x768.
>>   when i run s-c-d, under "Settings", i see only up to 1024x768, but
>> if i go over to the "Hardware" tab, i see:
>>   Monitor Type:  LCD Panel 1440x900
>>   Video Card:  Intel ... 945GM/GMS ...
>> so i'm confused ... the Hardware tab clearly recognizes the display, yet
>> the Settings tab won't let me choose that resolution.
>        [....]
>        I've done one helluva lot of such fiddling lately, trying to
> accommodate to the new HP w2207h I bought when my old square lcd monitor
> died suddenly. One trick that often helps is to log out and back in
> *twice*. In your present situation, particularly, if you log out and back
> in, *then* (and not sooner) you should be able to make that change. Then
> of course you'll have to log out and back in yet another time, to get it
> to take the new change. <sigh>
> --
> Beartooth Staffwright, PhD, Neo-Redneck Linux Convert
> Remember I know precious little of what I am talking about.
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