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Re: Please Help With Dual Head



--- Troy Bull <troybull lists gmail com> wrote:

> Greetings:
> 
> I recently upgraded my os (a clean install) to Fedora Core 5, and I was 
> excited to see the support for Dual Head built into the configuration 
> utility.  I am having a problem getting it setup correctly.  What I want 
> is to extend my desktop onto my second monitor.  I went through the 
> System->Administration->Display utility and can't make it work.  I will 
> describe what is happening.
> 
> I have 2 identical monitors and a Radeon X600 PCIE card.  When I boot to 
> windows the setup works so it is plugged in correctly.  The monitors are 
> connected via the digital hookup.
> 
> On my left monitor I have a desktop.  Then on my right monitor I have a 
> ghosted image from the left monitor.  If I try to click on the left 
> monitor it doesn't work (I can move the mouse onto screen1 by going off 
> the right edge of screen 0.  I noticed by looking at the workplace 
> switcher I actually have the wide desktop.  I can move windows on and 
> off the part which lies underneath the ghosted image of screen1. 
> 
> So in short, everything is correct except Screen1 shows an image of 
> Screen0 instead of the desktop which is really there.
> 
> I am a bit frustrated as I have been tinkering with xorg.conf and can't 
> make it work.  This used to work so I feel like it still should, if 
> anyone could give me some tips or something I would greatly appreciate it.

Troy,

Though I didn't go over your xorg.conf file too closely, I don't think that's
your problem.  The problem is in the Xorg7 Radeon driver.  There is an update
posted at
http://download.fedora.redhat.com/pub/fedora/linux/core/updates/testing/5/i386/xorg-x11-drv-ati-6.5.8.0-1.i386.rpm.

I think you can install it by typing something like:

sudo yum --enablerepo=updates-testing update xorg-x11-drv-ati

BEWARE!  On some ATI boards, this update will lock up your machine randomly. 
There's already a bug filed on this that hasn't seen any activity for a
while:
https://bugs.freedesktop.org/show_bug.cgi?id=5781
This is what I'm experiencing.
A week ago, I did a complete checkout and build to see if CVS HEAD fixed this
problem.  I found that it made no difference on my T30.

Good luck.

John


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