FC2: nv driver with dualhead, xinerama setup

Steve Berry stevejberry at bellsouth.net
Mon May 24 01:02:22 UTC 2004

Why is it required to have 2 cards with the nv driver used with x.org, I
simply don't understand why it lacks multiple outputs, other then full
support of the card being lacked. 

-----Original Message-----
From: fedora-list-bounces at redhat.com [mailto:fedora-list-bounces at redhat.com]
On Behalf Of Peter Boy
Sent: Saturday, May 22, 2004 7:06 AM
To: fedora-list at redhat.com
Subject: Re: FC2: nv driver with dualhead, xinerama setup

Am Mi, den 19.05.2004 schrieb Gerard Milmeister um 19:49:
> I now have a nice 1600x1200 resolution on my CRT monitor, but can't get
> xinerama to work. My second screen is an LCD Acer. I tried to configure
> using system-config-display, and the generated xorg.conf seems to be
> correct, but the Xserver refuses to start complaining about a duplicate
> use of an Entity. Is it possible that the nv driver only supports a two
> video card setup, but not a single card dual-head?

Yes, it is "possible" - you definitely need two cards for a dual head
configuration with nv.

> Another problem is that the driver seems to have trouble deciding what
> monitor to use. Sometimes it will use the LCD, which doesn't work well
> because the resolution is set to high, then again the correct one, the
> CRT is used. 

Have a look at man nv. There are some options to specify which head to


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