Help. x1600, dual monitors, DVI twitching

Alex Deucher alexdeucher at
Fri Aug 7 12:13:01 PDT 2009

On Fri, Aug 7, 2009 at 11:55 AM, Ron King<rking at> wrote:
> Thanks for the try, but that's a no go.  If I use the radeonhd driver and
> attempt to set coherent_mode to false, all monitors blank.  If I set it in
> xorg.conf, the X server hangs.  With radeonhd the DVI output is a clone of
> LVDS, and both Xrandr and xorg.conf fail when I try to ignore/turn off the
> LVDS output.  With the default radeonhd and radeon, I get the flickering and
> missing rows.  I pulled the xf86-video-ati, but fails with a
> syntax error on line 12017 with an unknown token XINERAMA.  Unless you, or
> someone, has a fairly quick fix, I'm going to drop Fedora 11 and load
> another flavor.  I think Ubuntu is still using the older server and drivers.

You need the xorg macros package.  Grab the build deps with yum.


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