Problem with ati driver at 2560x1600

Wil Reichert wil.reichert at
Sun May 3 15:09:47 PDT 2009

On Sun, May 3, 2009 at 2:04 PM, Alex Deucher <alexdeucher at> wrote:
> On Sun, May 3, 2009 at 12:20 PM, Wil Reichert <wil.reichert at> wrote:
>> Seems I'm getting some wierd issue where both text and graphics (i.e.
>> fonts, window decorations, etc) are pixelated & blocky at 2560x1600.
>> Drpoping the resolution to 1920x1200 makes everything fine.  I've
>> tried both 6.12.2 and git master of xf86-video-ati, both have the same
>> issue.    Tried various windows managers, all have the same problem.
>> I got a screenshot via gimp to show the problem, but it looked fine.
>> Attached is my x log.
> Are you sure your card supports dual link dvi?  Not all r5xx cards are
> wired up for dual-link dvi support.  1920x1200 is still within the
> bounds of single link dvi while 2560x1600 requires dual-link.

Ah, I assumed just because it was mentioned on the ATI spec sheet it
would work.  Silly me.  Just confirmed Windows maxes out at 1920 x
1200 as well.  Is lack of a dual link connector something that could
potentially be detected by the driver?


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