[ltp] External TFT with higher resolution on a IBM T40

[Alex Deucher]

On 9/3/05, Konstantin Filtschew <konstantin.filtschew@gmail.com> wrote:
> hi,
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> the dual desktop solution was not the best for xfce, because it has
> problems to safe the configuration of the panel for the both screens.
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> My System: IBM T40 2373-8cg with a radeon 7500 32MB(not shared).
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> My build in LCD resolution: 1024x768
> My external TFT resolution: 1280x1024
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> What I try to achieve:
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> I want to use my nice new TFT with the resolution 1280x1024 and only the
> external TFT, doesn't matter what resolution is on the LCD of the
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> laptop, because it is closed.
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> I can restart xorg for this, I need only the same desktop only on LCD of
> the laptop. After a restart of the xorg and choosing an other config the
> same desktop only on the external TFT, not more.
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> This solution is similar to the solution of windows. If you plugin your
> external TFT and close your notebook, windows recognizes, that there is
> an externel display and switches to this with the proper (higher)
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> resolution. If you open your notebook windows switches back to the lower
> resolution on the LCD and the external TFT is switched off.
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> I need no Xinerama or clone mode, the only thing I want is to use the
> external TFT at it's highest resolution without the laptop LCD.
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> And a possibility to use the internal LCD on the lower resolution on the
> travel.
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> Thx for your help

Unforunately X doesn't support dynamic reconfiguration, and can't at
the moment receive acpi events.  So until that is supported, you need
to have multiple configs and restart X to switch between.

Alex

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> Konstantin
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> On Wed, 2005-08-31 at 21:00 -0400, Alex Deucher wrote:
> > On 8/31/05, Konstantin Filtschew <
> konstantin.filtschew@gmail.com> wrote:
> > > hello,
> > >=20
> > > I have a small problem to solve. The LCD of my T40 2373-8cg has only =
a
> > > small resolution 1024x768.
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> > >=20
> > > Now I bought a nice TFT with a higher resolution: 1280x1024.
> > >=20
> > > I tried several tricks, but I can't change the resolution higher then
> > > 1024x768. The problem is that, I try to change the resolution on the
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> > > Laptop-LCD, but I have to do it on the external VGA.
> > >=20
> > > Any Idea how to do this. I need to know how to control the resolution=
 on
> > > the external VGA.
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> >=20
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> > what are you trying to acheive? Dualhead? Clone mode with dissimilar
> > modes? The t40 has a radeon I think, so any of these can be
> > accomplished with the radeon driver. However, bear in mind, that xorg
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> > does not currenly support dynamic output control, so you get what you
> > get when you start x. if you want to change your config, you'll have
> > to restart x (for the most part).
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> > Alex
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> >=20
> > > Thx for your help
> > >=20
> > > Konstantin Filtschew
> > > --
> > > Building an operation system without source code,
> > > is like buying a self assemble space shuttle without
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> > > instructions.
> > >=20
> > >=20
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