Re: Nouveau and multi-monitor setup for Quadro NVS450 (G98)

["Dr. Boris Neubert" <omega-BGeptl67XyCzQB+pC5nmwQ@public.gmane.org>]

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Am 10.11.2014 um 00:18 schrieb Ben Skeggs:

> On Sun, Nov 9, 2014 at 11:08 PM, Dr. Boris Neubert <omega-BGeptl67XyCzQB+pC5nmwQ@public.gmane.org> wrote:
>> I have a NVidia Quadro NVS450 graphics card with on screen (4800 x 1200
>> pixels) over three monitors. I use the proprietary NVidia modules to
>> achieve accelerated 2D graphics and display effects.
>> I am not able to create a multi-monitor setup with current Nouveau
>> drivers (from Ubuntu 14.04.1). xrandr -q only shows one monitor.
>> http://nouveau.freedesktop.org/wiki/MultiMonitorDesktop/ seems to refer
>> to Xinerama which is no alternative to me (slow, no display effects).
>>
> From what I recall (I believe I have this board on my desk somewhere),
> this board is actually two separate GPUs, each one driving two
> outputs.  Your best bet is to treat it as one would an "Optimus"
> configuration[1].
>
Thank you Ben, for the hint.

Unfortunately I am trapped by another problem: after switching back from
NVidia driver to Nouveau driver in Ubuntu, I get GPU lockups already at
boot time, rendering the system inaccessible. This is a peculiarity of
the combination of my mainboard and NVidia graphics card. I already
filed that issue to the Ubuntu bug tracker. Booting with
nouveau.noaccel=1 works but KDE crashes silently during initialization.

I thus had no chance to try the Optimus thing at all. Deadlocked 

Cheers,
Boris


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