On Thu, 2005-01-13 at 19:17 -0800, Steve P. Shack wrote:
> This is an interesting bug I've come across. When using the Radeon
> graphics driver doing full screen 3d on a DVI port. Output is only
> displayed at 1280x1024 (native) resolution for the display.
>
> Plug the display into the D-sub connector, and the display is fine. Plug
> in a dvi cable and you get no display. Raise the resolution to 1280x1024
> and you get display. Lower the resolution, to say 640x480, no display.
>
> Here's the kicker. I've only noticed this on one of the two lcd's I have
> to test. A samsung 172T. 3d display works fine with my benq 783.
> Unfortunately, they're different cables, and I haven't been able to test
> with the same cable to remove that variable from the problem.
>
> Anyone have any ideas? Would mode setting code be setting an out of spec
> mode on the DVI port that the Benq is handling more gracefully? perhaps
> sending an analog signal on the DVI output for 3d applications?
Does switching to lower resolutions (e.g. via ctrl-alt-{+,-} work with
2D only? If not, this should be discussed on the xorg bugzilla and/or
mailing lists.
--
Earthling Michel DÃnzer | Debian (powerpc), X and DRI developer
Libre software enthusiast | http://svcs.affero.net/rm.php?r=daenzer
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