tor, 13,.01.2005 kl. 19.17 -0800, skrev Steve P. Shack: > 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? > > My tests for full screen 3d are bzflag, Wolfenstein 3d and my own opengl > applications. The particular card I'm using is a generic "power color" > Radeon 9200se. >
It's a known problem, you can work around it by adding Option "DDCMode" "on" to the Device section of your xorg.conf Something in the radeon driver screws up when validating modes (compare xrandr output with and without ddcmode on) on lcd panels connected via dvi. There's a bugzilla entry for it, but I don't have the number at hand. -- Ronny V. Vindenes <[EMAIL PROTECTED]> ------------------------------------------------------- The SF.Net email is sponsored by: Beat the post-holiday blues Get a FREE limited edition SourceForge.net t-shirt from ThinkGeek. It's fun and FREE -- well, almost....http://www.thinkgeek.com/sfshirt -- _______________________________________________ Dri-devel mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/dri-devel
