i810/intel, SDVO, and "fuzzy" modes

[Eric Anholt]

On Thu, 2006-10-19 at 20:25 -0700, Jeffrey W. Baker wrote:
> Can someone on the Intel team comment on why the SDVO cards generate
> "fuzzy" modes.  Thanks to other members of this list I finally have a
> working 1920x1200 digital mode on my G965, and it's amazingly bad.  At
> 1600x1200 analog the picture is perfectly crisp.  But at either
> 1600x1200 or 1920x1200 digital, it's appalling.  There's no way this is
> working correctly.  Somewhere along the line, some piece of hardware is
> resampling the picture.
> 
> I know it's hard to tell from a photograph, but this one is high
> resolution and you can see the individual grid lines on my monitor.
> Note how what are supposed to be 1px sharp lines take up 2px.
> 
> http://tastic.brillig.org/~jwb/fuzzy.png
> http://tastic.brillig.org/~jwb/clear.png
> 
> By the way, the monitor reports 1920x1200 74.2kHz/60Hz.
> 
> Any hints?  This whole SDVO thing is really quite mysterious to us mere
> users.

I think we wouldn't be able to fix an issue like this until we get the
modesetting branch working on the 965.  That should be soon, hopefully.

-- 
Eric Anholt                             anholt at FreeBSD.org
eric at anholt.net                         eric.anholt at intel.com
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