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0triple monitor / dual video card set up

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  0triple monitor / dual video card set up Seb <spluque@gmail.com> - 2016-04-14 14:40 +0200
    Re: 0triple monitor / dual video card set up Ric Moore <wayward4now@gmail.com> - 2016-04-14 19:40 +0200
      Re: 0triple monitor / dual video card set up gianluca <gianlucarenzi@eurek.it> - 2016-04-15 10:10 +0200
        Re: 0triple monitor / dual video card set up Seb <spluque@gmail.com> - 2016-04-15 16:40 +0200
          Re: 0triple monitor / dual video card set up gianluca <gianlucarenzi@eurek.it> - 2016-04-15 17:20 +0200

#166700 — 0triple monitor / dual video card set up

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Hello,

I've recently moved onto a setup with:

* 3 monitors

  Resolutions:

  - 1920 x 1080 (2)
  - 1680 x 1050 (1)


* 2 videos cards

  - GeForce GT 720
  - RV730 Pro (Radeon HD 4650)

The two monitors with the same resolution are plugged into the GT 720
and the remaining is plugged into the HD 4650.

After a lot of effort I was able to get the monitor(s) from either card
to function properly with the attached /etc/X11/xorg.conf.  The
"Default" layout works well whether I use the Screen section from either
video card.  Unfortunately, it fails whenever I attempt to combine the
screens.  In the latter case, only the Screen section that is listed
first gets displayed properly, and the other shows a black screen(s)
with an X-shaped cursor whenever the cursor wonders into the area.

Any tips on what is going on?  Have others been successful in setting up
a config file for a multiple video card system requiring a mixture of
drivers like nouveau and radeon?

Thanks,

-- 
Seb

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#166713

On 04/14/2016 08:31 AM, Seb wrote:
> Hello,
>
> I've recently moved onto a setup with:
>
> * 3 monitors
>
>    Resolutions:
>
>    - 1920 x 1080 (2)
>    - 1680 x 1050 (1)
>
>
> * 2 videos cards
>
>    - GeForce GT 720
>    - RV730 Pro (Radeon HD 4650)
>
> The two monitors with the same resolution are plugged into the GT 720
> and the remaining is plugged into the HD 4650.
>
> After a lot of effort I was able to get the monitor(s) from either card
> to function properly with the attached /etc/X11/xorg.conf.  The
> "Default" layout works well whether I use the Screen section from either
> video card.  Unfortunately, it fails whenever I attempt to combine the
> screens.  In the latter case, only the Screen section that is listed
> first gets displayed properly, and the other shows a black screen(s)
> with an X-shaped cursor whenever the cursor wonders into the area.
>
> Any tips on what is going on?  Have others been successful in setting up
> a config file for a multiple video card system requiring a mixture of
> drivers like nouveau and radeon?

I run four monitors, but I use identical nvidia cards with two gigs of 
vram each. I use the nvidia driver and the nvidia setup util to 
configure it all. Easy to do, works like a charm. Mixing different 
vendor cards is asking for a degree of difficulty. I lack the patience 
and am lazy. Plus, I want everything successfully accelerated. :) Ric


-- 
My father, Victor Moore (Vic) used to say:
"There are two Great Sins in the world...
..the Sin of Ignorance, and the Sin of Stupidity.
Only the former may be overcome." R.I.P. Dad.
http://linuxcounter.net/user/44256.html

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#166729

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On 04/14/2016 07:31 PM, Ric Moore wrote:
> On 04/14/2016 08:31 AM, Seb wrote:
>> Hello,
>>
>> I've recently moved onto a setup with:
>>
>> * 3 monitors
>>
>>    Resolutions:
>>
>>    - 1920 x 1080 (2)
>>    - 1680 x 1050 (1)
>>
>>
>> * 2 videos cards
>>
>>    - GeForce GT 720
>>    - RV730 Pro (Radeon HD 4650)
>>
>> The two monitors with the same resolution are plugged into the GT 720
>> and the remaining is plugged into the HD 4650.
>>
>> After a lot of effort I was able to get the monitor(s) from either card
>> to function properly with the attached /etc/X11/xorg.conf.  The
>> "Default" layout works well whether I use the Screen section from either
>> video card.  Unfortunately, it fails whenever I attempt to combine the
>> screens.  In the latter case, only the Screen section that is listed
>> first gets displayed properly, and the other shows a black screen(s)
>> with an X-shaped cursor whenever the cursor wonders into the area.
>>
>> Any tips on what is going on?  Have others been successful in setting up
>> a config file for a multiple video card system requiring a mixture of
>> drivers like nouveau and radeon?
>


I am running the same configuration as you, but only two monitors.
One monitor is attached on the Radeon DVI output and the other on the 
DVI-1 NVidia 6600 board (on PowerPC Quad-G5). All cards are PCI-Express 
(16x and 8x slots).

Please refer to your monitors' timings for adjust the timings and 
resolutions.

Be aware of change the BusID value just to match your system.

Rename it /etc/X11/xorg.conf and try to restart the login manager of 
your choice, i.e.:

$ sudo service lightdm restart

Good luck!

Gianluca
-- 
Eurek s.r.l.                          |
Electronic Engineering                | http://www.eurek.it
via Celletta 8/B, 40026 Imola, Italy  | Phone: +39-(0)542-609120
p.iva 00690621206 - c.f. 04020030377  | Fax:   +39-(0)542-609212

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#166739

On Fri, 15 Apr 2016 09:58:43 +0200,
gianluca <gianlucarenzi@eurek.it> wrote:

[...]

> I am running the same configuration as you, but only two monitors.
> One monitor is attached on the Radeon DVI output and the other on the
> DVI-1 NVidia 6600 board (on PowerPC Quad-G5). All cards are
> PCI-Express (16x and 8x slots).

I see you're using Xinerama.  IIUC, this is meant to have the desktop
stretched across all monitors.  I don't want that; I just need the other
monitors as places I can drag windows to/from to be able to have several
apps running and visible at all times.


> Please refer to your monitors' timings for adjust the timings and
> resolutions.

I don't understand why this would be needed at all, given that I can see
in /var/log/Xorg.0.log that everything about all monitors was accurately
identified.  Not sure what section would actually need specifying.

> Be aware of change the BusID value just to match your system.

> Rename it /etc/X11/xorg.conf and try to restart the login manager of
> your choice, i.e.:

> $ sudo service lightdm restart

> Good luck!

Thanks!

-- 
Seb

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#166740

On 04/15/2016 04:34 PM, Seb wrote:
> On Fri, 15 Apr 2016 09:58:43 +0200,
> gianluca <gianlucarenzi@eurek.it> wrote:
>
> [...]
>
>> I am running the same configuration as you, but only two monitors.
>> One monitor is attached on the Radeon DVI output and the other on the
>> DVI-1 NVidia 6600 board (on PowerPC Quad-G5). All cards are
>> PCI-Express (16x and 8x slots).
>
> I see you're using Xinerama.  IIUC, this is meant to have the desktop
> stretched across all monitors.  I don't want that; I just need the other
> monitors as places I can drag windows to/from to be able to have several
> apps running and visible at all times.
>
>
>> Please refer to your monitors' timings for adjust the timings and
>> resolutions.
>
> I don't understand why this would be needed at all, given that I can see
> in /var/log/Xorg.0.log that everything about all monitors was accurately
> identified.  Not sure what section would actually need specifying.
>

Simply they are needed because of with Xinerama the Xrandr extensions 
are disabled. So I cannot be sure if the EDID data are read correctly.

> Thanks!
>


-- 
Eurek s.r.l.                          |
Electronic Engineering                | http://www.eurek.it
via Celletta 8/B, 40026 Imola, Italy  | Phone: +39-(0)542-609120
p.iva 00690621206 - c.f. 04020030377  | Fax:   +39-(0)542-609212

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