[ltp] T41 matching VGA+LCD ??

Matt Ettus linux-thinkpad@linux-thinkpad.org
Wed, 6 Oct 2004 18:39:02 -0700


which section does mergedfb go in?  It doesn't seem to do anything for me


On Wed, 6 Oct 2004 21:27:16 -0400, Alex Deucher <alexdeucher@gmail.com> wrote:
> On Wed, 6 Oct 2004 18:12:14 -0700, Matt Ettus <boyscout@gmail.com> wrote:
> > Hi.  I have a T41 with a Radeon M9 and Fedora Core 2, X.org 6.8
> >
> > Does anyone know how to get the external VGA connector to show the
> > exact same thing as the LCD?  The closest I can get is the external
> > one matching the internal, but with only a 640x480 resolution and a
> > bigger virtual desktop.
> >
> 
> that's mergedfb's clone mode.  it defaults to 640x480@60Hz if it can't
> get the DDC info from the connected monitor so that it doesn't fry
> your monitor with a mode it can't handle.  you can either force
> mergedfb off (option "mergedfb" "false"), in which case crtc1 will
> drive both the lcd and the vga port, or you can specify the Hsync and
> vrefresh of your projector as options, eg:
>         Option  "CRT2HSync" "30-50"
>         Option  "CRT2VRefresh" "40-70"
> 
> Alex
> 
> > Basically, I am trying to do a presentation where I can see the same
> > thing on the LCD as what I am projecting to the audience.
> >
> > I have no trouble at all getting xinerama or separate desktops to
> > work, but that is not what I want.
> >
> > Thanks for any help
> >
> > Matt
> > --
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> >
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