ati driver dual head 2nd monitor incorrect resolution

John H. mistamaila at yahoo.com
Mon Oct 11 14:19:01 PDT 2004


So in xorg.conf I just need to
 Option      "MergedFB" "False"

and load xinerama module in xorg.conf?

--- Alex Deucher <alexdeucher at gmail.com> wrote:

> On Mon, 11 Oct 2004 12:49:04 -0700 (PDT), John H.
> <mistamaila at yahoo.com> wrote:
> > Ok
> > I upgraded to 6.8.1 on my fc2 machine.
> > I have a radeon 9600, and told my xorg.conf to use
> ati
> > driver.
> > 
> > If I have the following...
> >         Option      "MetaModes"
> "1600x1200-1024x768"
> > xinerama seems to work, but my second monitor, a
> flat
> > panel LCD at 1024x768, scrolls vertically once I
> log
> > in from xdm/gdm, so when I maximize apps in it I
> have
> > to scroll down or up to see them all.
> > 
> > If I do
> > Option      "MetaModes" "1024x768-1024x768"
> > 
> > Neither monitor needs to scroll(maximized apps
> work
> > fine) but obviously I want a higher resolution on
> the
> > first monitor, 1600x1200.
> > 
> > any ideas?
> > 
> 
> use xinerama instead of mergedfb.  the scrolling is
> because with
> mergedfb, there is one big framebuffer that both
> crtcs point into.  it
> has be to big enough for both, so you get teh
> scrolling affect. you
> can lock the frame movement if you feel like editing
> the code in
> radeon_mergedfb.c, but then you risk having apps
> appear on a non
> visible part of the framebuffer.   The behavior you
> want is "regular"
> dualhead with xinerama.  to do that, set up  read
> the xinerama howto.
> In "regular" dualhead, each screen has it's own
> framebuffer and
> xinerama is used to stich them together as one
> single logical screen.
> 
> Alex
> _______________________________________________
> xorg mailing list
> xorg at freedesktop.org
> http://freedesktop.org/mailman/listinfo/xorg
> 


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