Laptop: X Autodetect External monitor and use Higher Resolution

roger.beever roger.beever at
Thu Nov 13 16:26:08 UTC 2003

From: "John Hodrien" <johnh at>
To: <fedora-list at>
Sent: Thursday, November 13, 2003 3:34 PM
Subject: Re: Laptop: X Autodetect External monitor and use Higher Resolution

> On Tue, 11 Nov 2003, Robert G. (Doc) Savage wrote:
> > On Tue, 2003-11-11 at 14:09, Lewt @ Linux Warcry wrote:
> > > Does anyone know if you can set things up where if you plugged up a
> > > external monitor or dock the laptop it would use a higher resolution
> > > the larger monitor and maintain the current resolution on the laptop
> > > monitor?
> >
> > Lewt,
> > A laptop would require dual-headed video to do what you describe. I know
> > of no laptop that simultaneously supports one resolution on the internal
> > screen and a higher resolution on an external monitor. Several can do
> > one or the other, but not both at the same time.
> The closest I've seen is if you have have a Modes line with the external
> screen's resolution first, and the laptop's resolution second, if the
> display is connected you'll get the higher resolution being piped to both,
> if not you'll get the lower resolution on the laptop.  That's the best
> found.  That'll probably depend on your chipset as to whether it'll work
> jh
I those cases the laptop screen usually scrolls with the mouse movment
giveing a virtual larger screen.
Which is usually quite viewable if a little confusing if the laptop screen
is in your periferal vision!
Regards Roger

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