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two graphics cards and two monitors

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  two graphics cards and two monitors jurek <jurek.mlynarczyk@o2.pl> - 2017-01-01 22:20 +0100
    Re: two graphics cards and two monitors Sven Joachim <svenjoac@gmx.de> - 2017-01-01 22:30 +0100
    Re: two graphics cards and two monitors Gary Dale <garydale@torfree.net> - 2017-01-01 22:40 +0100
    Re: two graphics cards and two monitors Teemu Likonen <tlikonen@iki.fi> - 2017-01-02 07:20 +0100
    Re: two graphics cards and two monitors Ric Moore <wayward4now@gmail.com> - 2017-01-03 15:40 +0100
      Re: two graphics cards and two monitors Dan Ritter <dsr@randomstring.org> - 2017-01-04 15:40 +0100
      Re: two graphics cards and two monitors Mark Fletcher <mark27q1@gmail.com> - 2017-01-04 15:40 +0100
        Re: two graphics cards and two monitors kamaraju kusumanchi <raju.mailinglists@gmail.com> - 2017-01-05 04:10 +0100
        Re: two graphics cards and two monitors Felix Miata <mrmazda@earthlink.net> - 2017-01-05 04:50 +0100
          Re: two graphics cards and two monitors Mark Fletcher <mark27q1@gmail.com> - 2017-01-10 16:50 +0100
            Re: two graphics cards and two monitors Dan Ritter <dsr@randomstring.org> - 2017-01-10 17:00 +0100
              Re: two graphics cards and two monitors Teemu Likonen <tlikonen@iki.fi> - 2017-01-10 17:30 +0100
                Re: two graphics cards and two monitors Ric Moore <wayward4now@gmail.com> - 2017-01-10 18:10 +0100

#176224 — two graphics cards and two monitors

How to use two graphics cards and two monitors on nouveau driver.I have 
Nvidia gtx 650 ti boost and Nvidia gt 240 card.

nouveau version :
xserver-xorg-video-nouveau 1:1.0.11-1 amd64 X.Org X server -- Nouveau 
display driver

lspci -v | grep NVIDIA

01:00.0 VGA compatible controller: NVIDIA Corporation GK106 [GeForce GTX 
650 Ti Boost] (rev a1) (prog-if 00 [VGA controller])
06:00.0 VGA compatible controller: NVIDIA Corporation GT215 [GeForce GT 
240] (rev a2) (prog-if 00 [VGA controller])

uname -a

Linux AdminPC 3.16.0-4-amd64 #1 SMP Debian 3.16.36-1+deb8u2 (2016-10-19) 
x86_64 GNU/Linux

Thanks!

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#176225

On 2017-01-01 22:03 +0100, jurek wrote:

> How to use two graphics cards and two monitors on nouveau driver.I
> have Nvidia gtx 650 ti boost and Nvidia gt 240 card.

I'm not quite sure why you use such a setup, a single card would be fine
for two monitors.  Anyway, please consult the Nouveau Wiki[1].

Good luck,
Sven


1. https://nouveau.freedesktop.org/wiki/MultiMonitorDesktop/

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#176226

On 01/01/17 04:03 PM, jurek wrote:
> How to use two graphics cards and two monitors on nouveau driver.I 
> have Nvidia gtx 650 ti boost and Nvidia gt 240 card.
>
> nouveau version :
> xserver-xorg-video-nouveau 1:1.0.11-1 amd64 X.Org X server -- Nouveau 
> display driver
>
> lspci -v | grep NVIDIA
>
> 01:00.0 VGA compatible controller: NVIDIA Corporation GK106 [GeForce 
> GTX 650 Ti Boost] (rev a1) (prog-if 00 [VGA controller])
> 06:00.0 VGA compatible controller: NVIDIA Corporation GT215 [GeForce 
> GT 240] (rev a2) (prog-if 00 [VGA controller])
>
> uname -a
>
> Linux AdminPC 3.16.0-4-amd64 #1 SMP Debian 3.16.36-1+deb8u2 
> (2016-10-19) x86_64 GNU/Linux
>
> Thanks!
>
I'm not all that familiar with the Nouveau driver but that shouldn't be 
the sticking point. On most systems you just go into the display / 
monitors control (On KDE its in the System Settings menu) and set them 
up the way you want.

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#176247

[Multipart message — attachments visible in raw view] — view raw

jurek [2017-01-01 22:03:57+01] wrote:

> How to use two graphics cards and two monitors on nouveau driver.I have
> Nvidia gtx 650 ti boost and Nvidia gt 240 card.

See "xrandr" command's output. It may already show your display outputs.
If so, then maybe something like:

    xrandr --output HDMI-0 --auto
    xrandr --output HDMI-1 --auto --right-of HDMI-0

Desktop environments may have graphical tool for configuring monitors.

-- 
/// Teemu Likonen   - .-..   <https://github.com/tlikonen> //
// PGP: 4E10 55DC 84E9 DFF6 13D7 8557 719D 69D3 2453 9450 ///

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#176287

On 01/01/2017 04:03 PM, jurek wrote:
> How to use two graphics cards and two monitors on nouveau driver.I have
> Nvidia gtx 650 ti boost and Nvidia gt 240 card.
>

I agree with the comment that you can use just one video card for two 
monitors. I run two IDENTICAL nvidia cards with 4 monitors, using the 
nvidia driver and it works a charm. But I am not tasking a video driver 
with the disparities of two different cards. Try using just the 650 
card. 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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#176295

On Wed, Jan 04, 2017 at 11:30:11PM +0900, Mark Fletcher wrote:
> On Tue, Jan 03, 2017 at 09:37:00AM -0500, Ric Moore wrote:
> > On 01/01/2017 04:03 PM, jurek wrote:
> > >How to use two graphics cards and two monitors on nouveau driver.I have
> > >Nvidia gtx 650 ti boost and Nvidia gt 240 card.
> > >
> > 
> > I agree with the comment that you can use just one video card for two
> > monitors. I run two IDENTICAL nvidia cards with 4 monitors, using the nvidia
> > driver and it works a charm. But I am not tasking a video driver with the
> > disparities of two different cards. Try using just the 650 card. Ric
> > 
> > 
> 
> I've seen several people say or imply this in the past. But I have an 
> ignorant question I am almost too embarrassed to ask (almost). Most 
> normal cards have only one connector of each type. So how are you 
> plugging in 2 monitors -- one into the HDMI and one into the DisplayPort 
> / DVI / whatever connector??? Or do you use a special cable that plugs 
> into one connector at the card end and splits into 2 at the monitor end? 
> Would that even work? (I would have expected not)

You can order all sorts of cards. 2 DVI, 6 DisplayPorts,
whatever.

DisplayPort, incidentally, can be split to carry several
monitor's signals, if they fit within the allowed bandwidth.
You'll need a smart adapter for that, though -- $20-80.

And many monitors have multiple inputs of different types.

-dsr-

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#176296

On Tue, Jan 03, 2017 at 09:37:00AM -0500, Ric Moore wrote:
> On 01/01/2017 04:03 PM, jurek wrote:
> >How to use two graphics cards and two monitors on nouveau driver.I have
> >Nvidia gtx 650 ti boost and Nvidia gt 240 card.
> >
> 
> I agree with the comment that you can use just one video card for two
> monitors. I run two IDENTICAL nvidia cards with 4 monitors, using the nvidia
> driver and it works a charm. But I am not tasking a video driver with the
> disparities of two different cards. Try using just the 650 card. Ric
> 
> 

I've seen several people say or imply this in the past. But I have an 
ignorant question I am almost too embarrassed to ask (almost). Most 
normal cards have only one connector of each type. So how are you 
plugging in 2 monitors -- one into the HDMI and one into the DisplayPort 
/ DVI / whatever connector??? Or do you use a special cable that plugs 
into one connector at the card end and splits into 2 at the monitor end? 
Would that even work? (I would have expected not)

Mark

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#176316

On Wed, Jan 4, 2017 at 9:30 AM, Mark Fletcher <mark27q1@gmail.com> wrote:
> On Tue, Jan 03, 2017 at 09:37:00AM -0500, Ric Moore wrote:
>> On 01/01/2017 04:03 PM, jurek wrote:
>> >How to use two graphics cards and two monitors on nouveau driver.I have
>> >Nvidia gtx 650 ti boost and Nvidia gt 240 card.
>> >
>>
>> I agree with the comment that you can use just one video card for two
>> monitors. I run two IDENTICAL nvidia cards with 4 monitors, using the nvidia
>> driver and it works a charm. But I am not tasking a video driver with the
>> disparities of two different cards. Try using just the 650 card. Ric
>>
>>
>
> I've seen several people say or imply this in the past. But I have an
> ignorant question I am almost too embarrassed to ask (almost). Most
> normal cards have only one connector of each type. So how are you
> plugging in 2 monitors -- one into the HDMI and one into the DisplayPort
> / DVI / whatever connector??? Or do you use a special cable that plugs
> into one connector at the card end and splits into 2 at the monitor end?
> Would that even work? (I would have expected not)

Nothing to be embarrassed about. If you do not ask you would never know!

You can connect to two monitors using a splitter. Search for DVI
splitter cable on amazon.

hope that helps
-- 
Kamaraju S Kusumanchi | http://raju.shoutwiki.com/wiki/Blog

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#176321

Mark Fletcher composed on 2017-01-04 23:30 (UTC+0900):

> I've seen several people say or imply this in the past. But I have an
> ignorant question I am almost too embarrassed to ask (almost). Most
> normal cards have only one connector of each type.
AFAIK, those with only one standard connector, unless that connector is a 
DisplayPort, can only ever be used for displaying the same thing on each screen, 
typically called mirroring.

> So how are you
> plugging in 2 monitors -- one into the HDMI and one into the DisplayPort
> / DVI / whatever connector???
Many graphics adapters have multiple output ports that can be used 
simultaneously, and these can typically be configured to produce entirely 
unrelated things, or different portions of a single desktop too large to fit on 
one screen.

> Or do you use a special cable that plugs
> into one connector at the card end and splits into 2 at the monitor end?

Some gfxcards are intended to be used with a special cable that splits the 
signal into two discrete ports. Those that I have work the same way as cards 
with multiple output ports.
-- 
"The wise are known for their understanding, and pleasant
words are persuasive." Proverbs 16:21 (New Living Translation)

  Team OS/2 ** Reg. Linux User #211409 ** a11y rocks!

Felix Miata  ***  http://fm.no-ip.com/

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#176555

On Wed, Jan 04, 2017 at 10:43:10PM -0500, Felix Miata wrote:
> Mark Fletcher composed on 2017-01-04 23:30 (UTC+0900):
> 
> >I've seen several people say or imply this in the past. But I have an
> >ignorant question I am almost too embarrassed to ask (almost). Most
> >normal cards have only one connector of each type.
> AFAIK, those with only one standard connector, unless that connector is a
> DisplayPort, can only ever be used for displaying the same thing on each
> screen, typically called mirroring.
> 
> >So how are you
> >plugging in 2 monitors -- one into the HDMI and one into the DisplayPort
> >/ DVI / whatever connector???
> Many graphics adapters have multiple output ports that can be used
> simultaneously, and these can typically be configured to produce entirely
> unrelated things, or different portions of a single desktop too large to fit
> on one screen.
> 

So a generic graphics card circa 2009, with a nVidia GeForce 9800 GTX+ 
chipset, with an old D-type connector, a DVI connector, and an HDMI 
connector -- would you expect it to be able to drive more than one 
display? Given the manual is long since lost and was in a foreign 
language anyway, any way to interrogate the card to see its 
capabilities?

I used to use the DVI connector to connect to the monitor, then later 
switched to the HDMI, and didn't have to do anything except plug in the 
right cable at both ends to do that. So clearly, out of the box the same 
image is being fed to all ports. Any way to find out if it is capable of 
being cleverer than that?

Mark

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#176556

On Wed, Jan 11, 2017 at 12:43:02AM +0900, Mark Fletcher wrote:
> 
> So a generic graphics card circa 2009, with a nVidia GeForce 9800 GTX+ 
> chipset, with an old D-type connector, a DVI connector, and an HDMI 
> connector -- would you expect it to be able to drive more than one 
> display? Given the manual is long since lost and was in a foreign 
> language anyway, any way to interrogate the card to see its 
> capabilities?
> 
> I used to use the DVI connector to connect to the monitor, then later 
> switched to the HDMI, and didn't have to do anything except plug in the 
> right cable at both ends to do that. So clearly, out of the box the same 
> image is being fed to all ports. Any way to find out if it is capable of 
> being cleverer than that?

I would expect it to be able to drive two monitors with
different pictures, and possibly three.

If you are using open drivers, `xrandr` should be able to list
the available outputs and modes and change between them.

If you are using proprietary NVidia drivers, "nvidia-settings"
should be able to work for you.

-dsr-

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#176558

[Multipart message — attachments visible in raw view] — view raw

Dan Ritter [2017-01-10 10:56:21-05] wrote:

> If you are using open drivers, `xrandr` should be able to list the
> available outputs and modes and change between them.
>
> If you are using proprietary NVidia drivers, "nvidia-settings" should
> be able to work for you.

xrandr should work nicely with proprietary Nvidia drivers too. I've two
different Nvidia Geforce cards (one several years old and one new).
xrandr sees all monitor outputs, so configuring card for two monitors is
just a single xrandr command. I never had the two Nvidia cards connected
simultaneously, though. Just a single card with two monitors.

-- 
/// Teemu Likonen   - .-..   <https://keybase.io/tlikonen> //
// PGP: 4E10 55DC 84E9 DFF6 13D7 8557 719D 69D3 2453 9450 ///

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#176560

On 01/10/2017 11:19 AM, Teemu Likonen wrote:
> Dan Ritter [2017-01-10 10:56:21-05] wrote:
>
>> If you are using open drivers, `xrandr` should be able to list the
>> available outputs and modes and change between them.
>>
>> If you are using proprietary NVidia drivers, "nvidia-settings" should
>> be able to work for you.
>
> xrandr should work nicely with proprietary Nvidia drivers too. I've two
> different Nvidia Geforce cards (one several years old and one new).
> xrandr sees all monitor outputs, so configuring card for two monitors is
> just a single xrandr command. I never had the two Nvidia cards connected
> simultaneously, though. Just a single card with two monitors.

I am running two identical older nvidia GT-520 cards at once, to drive 
four monitors, using the nvidia driver and nvidia-settings to set the 
placement of the displays and create the xorg.conf file. You might have 
to disable the onboard video chipset though. No need to waste cycles 
dealing with something you won't use. It's sweeeet. :) 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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