[Watford] Seperate VGA display

[Yvan Seth]

<quote who="Steven Acreman">
> Cliff, you'll need to read up on defining multiple displays in
> xorg.conf

If you need to make any changes it is likely they'll revolve around the:
  Section "Device"
    ...
  EndSection
part of your /etc/X11/xorg.conf ...

Sometimes an additional channel, or "device", or a clone-display setting
needs to be enabled (depends on the "Driver" being used).  On my
Ubuntu-gutsy Thinkpad ("fglrx" driver, for ATI Radeon GPUs) I need to
have "clone" set in this section.  I.e.:
  Section "Device"
    ...
    Option "DesktopSetup" "clone"
    ...
  EndSection

If you're using "fglrx" give this a whirl.  Note that for "fglrx" you
can also use the configuration tool "aticonfig", for example:
    aticonfig --initial=dual-head --dtop=clone
I've been self-configuring X for years though and, irrationally, can't
make myself trust these "automagic" tools.

Your laptop and LCD/CRT resolutions will probably not match up nicely so
you may want to adjust the resolution.  You can do this on the fly, in
"Gnome" use System->Preferences->ScreenResolution.  In an xterm you can
use 'xrandr' to list the available resolutions and this, for example, to
switch resolution:
    xrandr --size 1280x1024
If using an LCD you may need to hit it's "auto-adjust" button to get it
to display the resolution correctly.  (Personally I always use a dock
with a DVI connector to avoid analogue signal fuzz ugliness.)

If you're not using "fglrx" send your xorg.conf to the list and maybe
someone familiar with your driver can point you in the right direction.


I've assumed you want to "clone" to use the separate display /instead/
of the laptop display.  You can also usually use the VGA port to drive
an additional display so you can dual-head.

-Yvan
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