Can't use second monitor from xfce4

[Mike McNally]

>From any type of session, xrandr reports the same thing - both monitors are
listed. I haven't tried actually activating the second monitor with xrandr
because until just now I didn't know I could :-)  I'll give that a try.
Thanks!


On Wed, Nov 17, 2010 at 8:32 AM, Olivier Fourdan <fourdan at gmail.com> wrote:

> On Wed, Nov 17, 2010 at 3:28 PM, Mike McNally <emmecinque at gmail.com>
> wrote:
> > I've got Ubuntu (not Xubuntu) 10.10 installed on a Lenovo U460 laptop.
> The
> > laptop has a dual-GPU architecture. I find that in no circumstances (from
> > Linux) can I access a second monitor plugged into the DVI port when I've
> got
> > the laptop "forced" (via BIOS setting) into using the NVidia GPU. With
> the
> > BIOS set to use the Intel GPU, however, I can use the secondary monitor,
> but
> > only when I log in with a Gnome or Openbox session. From XFCE, I can't
> get
> > the second monitor to do anything at all.
> > One of my points of confusion is that I can find no tool in the xfce4
> suite
> > that allows monitor configuration like the Gnome "Monitors" tool in the
> > Gnome control center. When I use that to set things up within a Gnome
> > session, it all works  just fine - the second monitor is correctly
> detected,
> > gets the right resolution, is positioned correctly for mouse movement,
> etc.
> > Same goes for Openbox.  From xfce4, however, the second monitor remains
> > dark. Even if I run the gnome-control-center from the xfce session,
> nothing
> > happens, though the Gnome tool does "see" the second monitor; it just
> > doesn't actually work.
> > So, what *is* the "normal" xfce4 way of setting up monitors?  Any clue as
> to
> > why I'd be seeing this behavior?
>
> Did you try with xrandr directly, from the command line in X?
>
> Cheers,
> Olivier
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