[Nouveau] Second Monitor left of internal monitor turns internal monitor black

[Ilia Mirkin]

On Thu, Apr 24, 2014 at 12:11 PM, Nicolas Göddel
<mailinglists at freakscorner.de> wrote:
> Hi there,
>
> a few days ago I installed Ubuntu Gnome 14.04 on my Thinkpad W530. It has
> the
> following specifications:
>
> Intel Core i7-3820QM
> Intel HD 4000 and nVidia Quadro K2000M
> 15,6" FHD RGB 1920x1080
>
> I selected "Optimus" in the BIOS settings to activate both graphic cards.
> After
> installing the nouveau driver on Ubuntu via 'apt-get install
> xserver-xorg-video-nouveau' I was able to use my external monitor.
>
> But! My external monitor stands physically left of my laptop, so I also set
> it
> to the left in the settings in Ubuntu. After clicking "OK" my internal
> screen
> turns black and the external monitor shows the correct image. But I couldn't
> move the mouse to the internal screen. It persists on the external one.
> Without
> seeing what I do I was able to open the settings window on the external
> screen
> again to activate cloning of the screens. This works without a problem. And
> I
> also have no problems if I set the external screen virtually to the right of
> the
> internal one.
>
> My version of xserver-xorg-video-nouveau is 1:1.0.10-1ubuntu2. If you need
> some
> more information let me know.

What happens if you just use xrandr instead of the ubuntu tool? From
your description, it sounds like it just turns off the internal
monitor instead of setting the external one to be left of it.

  -ilia