For me, on my Compaq Presario 721 with S3 KN133, this was the solution. Now i can have 1024*768

Miguel Pereira Leite
Qui, 2004-04-29 às 04:56, Efthym escreveu:
chech if vertical and horizontal sync in xorg.conf are commented out and  
re-enable them

On Wed, 28 Apr 2004 21:15:33 -0400 (EDT), Jerry Dueitt <>  

> I am running a FC2T1 install that I have continuously kept up2date,
> typically via up2date, but sometimes using yum if up2date refused to  
> work.
> But anyways, I am now up to Test 3 status. However, after installing the
> updates that brought me to Test 3 an issue came up. Now everytime I boot  
> X
> tries to run at 640x480. Consultation of the reveals this  
> error:
> (II) I810(0): not using default mode "1024x768" (bad mode
> clock/interlace/double scan)
> (II) I810(0): Not using mode "1024x768" (no mode of this name)
> (--) I810(0): Virtual size is 640x480 (pitch 1024)
> Does anyone know why this occurs and how to fix it. I have the DVD ISO
> downloaded and can burn that if a fresh install is the solution. I mean
> this system has just be updated through the various test versions. I
> haven't seen anaconda in a while so maybe I should... I just don't want  
> to
> if I can avoid doing a reinstall before the final.
> -Jerry.