ADD2 image quality: FIXED

Eric Anholt eric at
Tue Apr 3 13:36:43 PDT 2007

On Mon, 2007-04-02 at 07:56 -0400, Dr. Michael J. Chudobiak wrote:
> > I just received a new HP DC7700 with an ADD2 card in it, driving a 
> > Multisync LCD2170NX (1600x1200). The image quality is terrible - the 
> > text is fuzzy, and the colors are washed out. It looks like a CRT pushed 
> > too far. (Driver = open intel driver)
> > 
> > If I replace the HP ADD2 card with an Nvidia pci-e card, the video is 
> > fine (driver = closed nvidia driver), so it isn't a cable or LCD issue.
> > 
> > Is that normal, or do I have a dud ADD2 card? I have an older 
> > DC7600+ADD2 driving a different LCD at 1280x1024, and it looks fine.
> The above symptoms occur on FC7T3 with the "i810" driver. With the 
> "intel" driver (the experimental mode-setting branch), the image quality 
> is perfect!
> So... if you use 1600x1200 + ADD2, use the modesetting branch.

And by the modesetting branch, you mean the master branch :)
(or the 2.0 RCs we've been pushing out)

Eric Anholt                             anholt at
eric at                         eric.anholt at

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