Yet Another xorg.conf problem - multimonitor, large email.

Ben Scott dragonhawk at gmail.com
Tue Jul 17 17:52:24 EDT 2007


On 7/17/07, Drew Van Zandt <drew.vanzandt at gmail.com> wrote:
> I'm trying to get my new laptop to work with a second display in addition to
> the first.

  What behavior are you seeing?  What behavior were you expecting?

  Does your distribution have a set-up-my-hardware-for-me program?
Have you re-run it since you added the second display?

  It looks like you're trying to use Xinerama.  It's been awhile, and
I don't seem to still have my config files from back then (not
anywhere I can find them, anyway), but I think you need the following
to enable Xinerama support:

Section "ServerFlags"
	Option "Xinerama" "true"
EndSection

  You may want to try commenting-out the "glx" and/or "dri" modules,
at least temporarily.  At one time, Xinerama didn't work with at least
one of those.

  I take it this is a laptop.  Does the text mode console appear on
one or both screens before X server?  If only one, try using the
"internal/external/both" toggle key most laptops have to the various
states, and then starting X after each.

  You're explicitly specifying "UseFBDev".  I have no idea what that
does (and can't find documentation (though I didn't look very hard)),
but if you're not sure you need it, you might try commenting it out or
toggling it to "false" explicitly.  It sounds like it might maybe
cause the X server to attempt to use the kernel frame-buffer
subsystem, which is usually the Wrong Thing to do.  Usually.

> ... point me to a better FAQ...

  What FAQ have you read?  There's the Xinerama HOWTO, which is what I
used back when I played with this stuff:

http://tldp.org/HOWTO/Xinerama-HOWTO/index.html

-- Ben


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