Laptop Dual Monitor Support?
Jeremy Turner
wanting to use it with an external monitor with dual monitor support.
Here's my problem: XFree86 wants a separate video card for each screen,
but I believe the laptop only has 1 physical video card (only one was
found with lspci). I know the card has the capability (it can do dual
monitor support in WinXP). Any ideas?
Jeremy
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Olivier Crouzet
On Wed, 19 Jun 2002 12:37:52 -0500
"Jeremy Turner" <Jeremy...@oc.edu> wrote:
> Hi all. I've got an IBM ThinkPad A22m (2628-OKU) with sid and I'm
> wanting to use it with an external monitor with dual monitor support.
> Here's my problem: XFree86 wants a separate video card for each screen,
> but I believe the laptop only has 1 physical video card (only one was
> found with lspci). I know the card has the capability (it can do dual
> monitor support in WinXP). Any ideas?
You may do it depending on you xserver module. Have a look at the
xfree86.org pages. With a neomagic chipset, you just need to put (but one
video card = the same display on both of course!):
Section "Device"
[snip...]
Option "intern_disp"
Option "extern_disp"
EndSection
If you have another chipset, do look into the man pages for your server
(for the neomagic, it is mentionned in the XFree3 pages but not in the
XFree4 ones though it works under both.
Olivier.
--
Olivier Crouzet
Institut des Sciences Cognitives
CNRS - Université Claude Bernard Lyon 1
Jeremy Turner
> Hi,
>
> On Wed, 19 Jun 2002 12:37:52 -0500
> "Jeremy Turner" <Jeremy...@oc.edu> wrote:
>
> > Hi all. I've got an IBM ThinkPad A22m (2628-OKU) with sid and I'm
> > wanting to use it with an external monitor with dual monitor support.
> > Here's my problem: XFree86 wants a separate video card for each screen,
> > but I believe the laptop only has 1 physical video card (only one was
> > found with lspci). I know the card has the capability (it can do dual
> > monitor support in WinXP). Any ideas?
>
> You may do it depending on you xserver module. Have a look at the
> xfree86.org pages. With a neomagic chipset, you just need to put (but one
> video card = the same display on both of course!):
>
> Section "Device"
> [snip...]
> Option "intern_disp"
> Option "extern_disp"
>
> EndSection
>
> If you have another chipset, do look into the man pages for your server
> (for the neomagic, it is mentionned in the XFree3 pages but not in the
> XFree4 ones though it works under both.
I ran XFree86 -configure to generate my XF86Config-4 file and it added a
lot of commented-out options, but none of them seemed like they would do
the trick. I'm using the ati driver, and I couldn't find any specific
ati notes on http://www.xfree86.org with XFree86 4.1. I guess I'll just
be stuck with two monitors and only one display. Oh well.
Jeremy
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Jeremy M Turner, A+ Technician Phone: 405.425.5555
Email: Jeremy...@oc.edu Phone: 405.425.1820
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Alan Shutko
> I guess I'll just be stuck with two monitors and only one display.
> Oh well.
Last i checked, XF86 couldn't do two displays on laptop chipsets, at
least not in 4.1 and not on ati. Xig's stuff can for a number of
laptop chipsets (for instance, I know their r128 driver can) but I
haven't actually used it.
I don't know if this has been implemented in later versions of X.
When I was following this, it wasn't high on the developer's priority
list.
--
Alan Shutko <a...@acm.org> - In a variety of flavors!
If life is merely a joke, the question still remains: for whose amusement?
Mike Hommey
XF86 in dual head with XFree 4.2 on an ATI Radeon Mobility LY (you can
take experimental packages from http://people.debian.org/~branden/).
To configure that, you need to put an additional device, monitor and
screen sections and to add the new screen to the screen layout.
Take a look on the Xinerama HOWTO to figure out how to configure this.
http://www.ibiblio.org/pub/Linux/docs/HOWTO/Xinerama-HOWTO
Boris Duerner
Does this work with all cards supported by the "ati" driver or only with
radeon chips. I have an ati mach64 with dualhead, can see two videocards when
I do lspci, but wasn't successful in the past(over ayear ago).
Marc