[SATLUG] Dual Monitors with FC6

Fri Jun 1 14:37:26 CDT 2007

Your xorg looks alright to me. It is how I've got mine setup, except of
course mine is a desktop and uses nvidia.

I guess one question I would have is your Sony a 64-bit processor? And if so
do you have a 64-bit install of FC6 running?

On 5/30/07, Matt Kinsel <mkinsel at gmail.com> wrote:
>
> Thanks for the help, guys.  Here's what my (ideal) dual-head xorg.conflooks
> like now: http://docs.google.com/Doc?id=dgrrq4fk_89dkgpnp
>
> I took your advice and found the propriety driver, fglrx.  Here's the one
> I
> installed:
>
> http://www2.ati.com/drivers/linux/ati-driver-installer-8.35.5-x86.x86_64.run
>
> However, I can't get X to work with that driver, whether I try dual-head
> or
> single-head (http://docs.google.com/Doc?id=dgrrq4fk_90jjqtn5).  I get the
> following error when trying to start X:
> (EE) No devices found
>
> As reassurance that the driver is there, it shows up in the GUI display
> settings, and I have the config tools (aticonfig) associated with the
> driver.  Could y'all help me out with this?
>
> Thanks!
>
> On 5/29/07, Gabriel Doss <gabriel.doss at gmail.com> wrote:
> >
> > Hi Matt,
> >
> > I wasn't on my computer much this weekend, so sorry for the late
> response.
> >
> > As for the XF86 error, that sounds like the driver just cannot handle
> what
> > you want. I'd try what Charles suggested and use the ATI proprietary
> > driver.
> > ATIs are notoriously hard to configure with Linux, though some do have
> > great
> > success with it. I've never used ATI with Linux so I cannot offer any
> help
> > there.
> >
> > My video card has two VGA outs and I specify the same card on videocard0
> > and
> > videocard1, so I know that can work. That being said, the card I have is
> > specifically designed for multi-monitor support. You have stated you get
> > cloned monitors, so we know the card can give a signal to two monitors
> at
> > the same time. Whether it can deliver something different is the
> question.
> >
> > You will want to disable cloning and enable xinerama once you get to
> that
> > point. Xinerama spreads the desktop across two monitors allowing
> different
> >
> > content on each.
> >
> > The only error you get now is regarding the videocards not being allowed
> > to
> > be assigned to the same device. If that is not allowed, then you will
> get
> > an
> > error saying no devices detected and no screens found as there is no
> valid
> >
> > device at that point.
> >
> > I also found a link to someone's xorg.conf file using FC3 and a Sony
> Vaio
> > PCG-GRX616MP. I'm not sure what model you have, but you can see in their
> > xorg file they used the "radeon" video card driver. There are definitely
> > some differences in their system and yours, but it should help you out.
> > The
> > also were cloning, where you want xinerama, so leave the stuff about
> > cloning
> > out of the second monitor and make sure at the top it stays xinerama
> "on"
> > and clone "off".
> >
> http://prouchon.free.fr/Linux/Fedora%20Core%203%20on%20Sony%20Vaio%20PCG-GRX616MP.html#DUAL_HEAD
> >
> >
> > Gabe
> >
> > >
> > >
> > > Matt Kinsel wrote:
> > > > Thanks, Gabriel.  I've fixed up my xorg.conf file like you said; you
> > can
> > > > see
> > > > it here: http://docs.google.com/Doc?id=dgrrq4fk_89dkgpnp
> > > >
> > > > But I'm still not able to start my X server with that config.  I get
> > > these
> > > > errors in Xorg.0.log:
> > > > (EE) ATI: XF86Config Device sections "Videocard0" and "Videocard1"
> may
> >
> > > not
> > > > be assigned to the same adapter
> > > > (EE)No devices detected
> > > >
> > > > And after those two errors there's this message:
> > > > Fatal server error:
> > > > no screens found
> > > >
> > > > As you can see on my xorg.conf, "Videocard0" and "Videocard1" are
> > > referring
> > > > to the same card, which is sending outputs to both monitors.  Should
> I
> > > just
> > > > eliminate "Videocard1" and have both "Screen" sections link to
> > > > "Videocard0"?
> > > >
> > > > And I forgot to mention some important info in the last email.  The
> > > > dual-screen "kind of" works - the video card sends outputs to both
> > > > monitors.  However, they both display the same thing.  When I move
> the
> > > > mouse, it moves on both monitors.  Windows, typing, and other
> actions
> > > > display exactly the same on both monitors.  As you know, this is not
> > > what I
> > > > want.  I would like to be doing two different things on two
> different
> > > > monitors, with the mouse moving between the two.  By the way, since
> I
> > > can't
> > > > even get X to start with the dual-head xorg.conf (
> > > > http://docs.google.com/Doc?id=dgrrq4fk_89dkgpnp), this half-way
> > > dual-screen
> > > > deal is the result of my normal, single-head xorg.conf:
> > > > http://docs.google.com/Doc?id=dgrrq4fk_90jjqtn5
> > > >
> > > > Thanks for the help!
> > > >
> > > > On 5/26/07, Gabriel Doss <gabriel.doss at gmail.com> wrote:
> > > >>
> > > >> I don't use ATI or a laptop, but I do have dual monitors using FC6
> > > using
> > > >> an
> > > >> nVidia card. Screen0 needs to be linked to something. Try
> specifying
> > > the
> > > >> laptop monitor as Monitor0. It would default to that with only one
> > > >> monitor
> > > >> so you don't need it in the single-head config.
> > > >>
> > > >> To sum up, add a: "Monitor" "Monitor0" line to Screen0. Also add a
> > > >> monitor
> > > >> device identified as "Monitor0." Use the specs of your laptop
> monitor
> >
> > > for
> > > >> that. I'd also edit xorg.conf by hand as I've never had
> > > >> system-config-display work when attempting a dual monitor setup.
> > There
> > > >> are
> > > >> just too many variables that it does not account for.
> > > >>
> > > >> The other thing you may want to check is if the ati driver can
> handle
> > > >> dual
> > > >> monitors. You may need the proprietary fglrx driver. I have no idea
> > > >> whether
> > > >> it can or cannot, just may be something you want to check.
> > > >>
> > > >> And good luck. Trial and error is how I got mine to work. I've had
> to
> > > >> redo
> > > >> my xorg.conf file many times as I make hardware and other changes,
> > and
> > > it
> > > >> is
> > > >> usually a struggle.
> > > >>
> > > >> On 5/26/07, Matt Kinsel < mkinsel at gmail.com> wrote:
> > > >> >
> > > >> > Hi all,
> > > >> >
> > > >> > I'm running Fedora Core 6 on a Sony Vaio laptop, and I've got an
> > > extra
> > > >> CRT
> > > >> > monitor that I want to use as a second monitor for my system.  My
> > > >> laptop
> > > >> > has
> > > >> > a VGA port which I will connect the monitor to.  I used the GUI
> > tool
> > > >> > "system-config-display" to attempt to configure a dual-head
> > > >> environment.
> > > >> > After I saved the settings I logged out and tried to restart my X
> > > >> server.
> > > >> > However, I received a message saying "Failed to start X server",
> > and
> > > >> then
> > > >> > I
> > > >> > was given the option to view the Xorg.0.log.  The first thing I
> > found
> > > >> was
> > > >> > this warning:
> > > >> > (WW) No monitor specified for screen "Screen0"
> > > >> > Using a default monitor configuration
> > > >> >
> > > >> > I also found two errors:
> > > >> > (EE) ATI: XF86Config Device sections "Videocard0" and
> "Videocard1"
> > > may
> > > >> not
> > > >> > be assigned to the same adapter
> > > >> > (EE)No devices detected
> > > >> >
> > > >> > And after those two errors there was this message:
> > > >> > Fatal server error:
> > > >> > no screens found
> > > >> >
> > > >> > That was the end of the Xorg.0.log, and then I was able to try to
> > > >> > reconfigure the X server settings.  After typing in my root
> > password,
> > > >> the
> > > >> > shell output this:
> > > >> > Couldn't start X server on card 0
> > > >> > Couldn't start X server with old config, trying with a fresh
> > > >> configuration
> > > >> >
> > > >> > After that I was given the "system-config-display" GUI tool to
> > > >> reconfigure
> > > >> > the settings.  I put them back how they were (no dual-head), and
> > then
> > > >> the
> > > >> > X
> > > >> > server started fine.
> > > >> >
> > > >> > Well, that's how it went down. Sorry for the play-by-play
> details,
> > > >> but I
> > > >> > feel that the more info given the better.  Anyways, here are my
> > > >> > /etc/X11/xorg.conf files for the two setups:
> > > >> >
> > > >> > Single head: http://docs.google.com/Doc?id=dgrrq4fk_90jjqtn5
> > > >> > Dual head: http://docs.google.com/Doc?id=dgrrq4fk_89dkgpnp
> > > >> >
> > > >> > Could y'all help me out with this?
> > > >> > TIA
> > > >> > --
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