[GTALUG] Xrandr problem

o1bigtenor o1bigtenor at gmail.com
Tue Oct 7 02:24:48 UTC 2014


On Mon, Oct 6, 2014 at 8:09 PM, Scott Sullivan <scott at ss.org> wrote:

> On 10/01/2014 01:14 PM, o1bigtenor wrote:
>
>> I'm running nvidia graphics cards (2 connected to monitors) so its a
>> royal pain
>> but I'm running the nvidia drivers. Its not that easy to set up the
>> first time (I spent
>> a lot of time the first time) but now its a painful process but its
>> quite doable.
>>
>
> Sounds like your doing multi-card, not specifically multi-monitor, am I
> mistaken?
>

2 cards and 4 monitors
1 monitor in portrait and 3 in landscape mode (wouldn't mind a 4th in
landscape!)

>
> Xrandr works great for multi-monitor, but does indeed assume single card.
> The assumption is not Xrandr's fault, support for multi-card been a target
> feature of Xorg to for the last decade. Multi-monitor single cards have
> been "good enough" for just as long.
>

My research showed that multi-card has been a 'hope' for a very long time.
It must be because few people actually run more than 1 graphics card.
I wish there were an easy way to slave cards together (I actually have 3
graphics
cards - - - wanted them for serious numeric processing).

>
>  You need to remove the nouveau driver. Means that first you need to get
>> your system
>> running on something else and then you black list nouveau and then you
>> install the
>> nvidia drivers and then you need to setup all the goodies and then you
>> can turf the nouveau
>> drivers and then you have OK performance.
>>
>
> Fought with this today actually.
> Add to your kernel boot line:
>
> modprobe.blacklist=nouveau
>
> This gets it gone before it's used to by the console.
>

One needs to NOT be running any x window stuff at that time too!

The whole process isn't very straightforward. Its a pity that nouveau
weren't just either seriously upgraded or perhaps deprecated.

Dee
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://gtalug.org/pipermail/talk/attachments/20141006/bb6915bd/attachment.html>


More information about the talk mailing list