Three monitors on T520, Linux

Is it possible to use the internal monitor + two external monitors under Linux?
Does this require that I enable the NVidia card, or is it possible if using only the Intel integrated graphics?
The computer is a T520 with Intel integrated + NVidia graphics.

The Hatter did not use character assassination (calling you bad names). He responded bluntly but directly to what he saw as an impediment to understanding the problem. I have the same issue. Please add some white space if you want help.
I would like to help you answer these questions as well. I cannot read or follow your description of what the problem is, because I am getting old and I have limited vision. Without any breaks in the text, I cannot re-read portions of it to pick out important details. You force me to re-read the post in its entirety, and keep track of what you have and how it is connected "in my head" which is very difficult.
Please re-write your huge paragraph above to include some white space. Put your equipment specifications into LISTS. Pull out and number your specific questions. This will allow the reader to revisit the text, visually find and extract the pertinent information, decode the information, and respond in a reasonable way.

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Thinkpad T420 three monitors linux/nvidia optimus

Hello,
I have a thinkpad T420 with a nvidia nvs4200 optimus. It has two video ports, one vga and one displayport. With optimus and windows 7 it should be able to display an two external and the internal display, in sum on three monitors.
In the bios I can switch between integrated, discrete, optimus. With discrete I am able to use two monitors. With optimus enabled, the Intel can't see the displayport.
Now the interesting thing. I installed bumblebee and it works. For curiosity I set it up to use the monitor "DP1", et voila, after running the bumblebee deamon and something with optirun I can see the bumblebee X server on the third monitor connected to the displayport. I can run something on it with "DISPLAY=:8.0 gvim" or even "DISPLAY=:8.0 nvidia-settings". Btw. it uses the same mouse as the first X server.
Now, any ideas how I could setup it for something useful?
EDIT:
Ok, with Xdmx it is possible to span a desktop using all three monitors, but with disabled glx, that means no composite, 3d etc.
Setup to test it, assuming a running bumblebee installation:
pacman -S xterm xorg-server-xdmx
echo "exec /usr/bin/optirun /usr/bin/xterm" > ~/.xinitrc
sudo /etc/rc.d/bumblebee start
startx -- :7
-in xterm run
startx /usr/bin/xfce4-session -- /usr/bin/Xdmx -display :7 -display :8 +xinerama -noglxproxy
Until someone has an idea how to enable glx, this setup is hardly useful.
Gruß, Georg
Last edited by Dschoordsch (2011-08-25 09:27:21)

I managed to get 3 monitors working on my T420 with a Lenovo Mini Dock Series 3 Plus. Have a look at my xorg.conf below. Please note that with my T420, the DVI ports on the dock are (probably) hardwired to the nvidia card. The VGA might possibly be, as you said, hardwired to the intel card, whereas the DisplayPort might be hardwired to the nvidia card. So you'd need to power two screens (VGA + internal display) using the intel card and one screen (DP) using the nvidia.
"ServerLayout"
Identifier "X.org Configured"
Screen 0 "LG0" 0 0
Screen 1 "LG1" RightOf "LG0"
Screen 2 "INT" LeftOf "LG0"
InputDevice "Mouse0" "CorePointer"
InputDevice "Keyboard0" "CoreKeyboard"
Option "Xinerama" "1"
EndSection
Section "Files"
ModulePath "/usr/lib/xorg/modules"
FontPath "/usr/share/fonts/X11/misc"
FontPath "/usr/share/fonts/X11/cyrillic"
FontPath "/usr/share/fonts/X11/100dpi/:unscaled"
FontPath "/usr/share/fonts/X11/75dpi/:unscaled"
FontPath "/usr/share/fonts/X11/Type1"
FontPath "/usr/share/fonts/X11/100dpi"
FontPath "/usr/share/fonts/X11/75dpi"
FontPath "/var/lib/defoma/x-ttcidfont-conf.d/dirs/TrueType"
FontPath "built-ins"
EndSection
Section "Module"
Load "record"
Load "extmod"
Load "dbe"
Load "glx"
Load "dri2"
Load "dri"
EndSection
Section "InputDevice"
Identifier "Keyboard0"
Driver "kbd"
EndSection
Section "InputDevice"
Identifier "Mouse0"
Driver "mouse"
Option "Protocol" "auto"
Option "Device" "/dev/input/mice"
Option "ZAxisMapping" "4 5 6 7"
EndSection
Section "Monitor"
Identifier "LG0"
VendorName "LG"
ModelName "LG Electronics L227W"
HorizSync 30.0 - 83.0
VertRefresh 56.0 - 75.0
EndSection
Section "Monitor"
Identifier "LG1"
VendorName "LG"
ModelName "LG Electronics L227W"
HorizSync 30.0 - 83.0
VertRefresh 56.0 - 75.0
EndSection
Section "Monitor"
Identifier "INT"
VendorName "Unknown"
ModelName "Internal"
HorizSync 30.0 - 83.0
VertRefresh 56.0 - 75.0
EndSection
Section "Device"
Identifier "intel0"
Driver "intel"
Option "XvMC" "true"
Option "UseEvents" "true"
Option "AccelMethod" "UXA"
BusID "PCI:0:2:0"
EndSection
Section "Device"
Identifier "nvidia0"
Driver "nvidia"
VendorName "NVIDIA Corporation"
BoardName "NVS 4200M"
BusID "PCI:1:0:0"
Screen 0
EndSection
Section "Device"
Identifier "nvidia1"
Driver "nvidia"
VendorName "NVIDIA Corporation"
BoardName "NVS 4200M"
BusID "PCI:1:0:0"
Screen 1
EndSection
Section "Screen"
Identifier "LG0"
Device "nvidia0"
Monitor "LG0"
DefaultDepth 24
Option "TwinView" "0"
SubSection "Display"
Depth 24
EndSubSection
EndSection
Section "Screen"
Identifier "LG1"
Device "nvidia1"
Monitor "LG1"
DefaultDepth 24
Option "TwinView" "0"
SubSection "Display"
Depth 24
EndSubSection
EndSection
Section "Screen"
Identifier "INT"
Device "intel"
Monitor "INT"
DefaultDepth 24
SubSection "Display"
Depth 24
EndSubSection
EndSection
Last edited by fhirschmann (2011-09-20 21:46:31)

Does anyone have three monitors working?

A friend of mine who enjoys the piece of mind of using Linux, but not the poking and prodding recently "inherited" a good monitor in addition to the two he already had.
He has two Nvidia cards. One came with the computer and has one out while the other card is much nicer and has dual outputs.
Has anyone gotten three monitors to work in Linux? I googled, but it seems that most of the things I read are from 2004-ish, and it wasn't so good back then.

AFAIK
one screen on the old card, one screen with 2 monitors on the new one and in the ServerLayout section you declare both screens ala
Section "ServerLayout"
Identifier "MEGAMONITORZ"
Screen "OldScreen"
Screen "NewScreen" LeftOf "OldScreen"
EndSection

10.6.4 Wake From Sleep Three Monitors

Never even the slightest wake from sleep problem on this 8-core Mac Pro running 10.5.0 through 10.6.3...
10.6.4 just woke from sleep — iTunes screen saver album cover art remained on my left and right monitors — system was flaky/unusable would not restart — 3-key+eject shutdown...
I suppose this is yet another problem running three monitors, but it is tough to see NEW problems, sigh...
Matching ATI Radeon HD 2600 OEM cards
Apple 30" monitor
ATI Radeon HD 2600 XT:
Chipset Model: ATI Radeon HD 2600
Type: GPU
Bus: PCIe
Slot: Slot-1
PCIe Lane Width: x16
VRAM (Total): 256 MB
Vendor: ATI (0x1002)
Device ID: 0x9588
Revision ID: 0x0000
ROM Revision: 113-B1480A-252
EFI Driver Version: 01.00.252
Displays:
Cinema HD:
Resolution: 2560 x 1600
Pixel Depth: 32-Bit Color (ARGB8888)
Main Display: Yes
Mirror: Off
Online: Yes
Rotation: Supported
Display Connector:
ATI Radeon HD 2600 XT:
Chipset Model: ATI Radeon HD 2600
Type: GPU
Bus: PCIe
Slot: Slot-2
PCIe Lane Width: x16
VRAM (Total): 256 MB
Vendor: ATI (0x1002)
Device ID: 0x9588
Revision ID: 0x0000
ROM Revision: 113-B1480A-252
EFI Driver Version: 01.00.252
Displays:
LCD2490WUXi:
Resolution: 1920 x 1200 @ 60 Hz
Pixel Depth: 32-Bit Color (ARGB8888)
Mirror: Off
Online: Yes
Rotation: Supported
SDM-HX73:
Resolution: 1280 x 1024
Pixel Depth: 32-Bit Color (ARGB8888)
Mirror: Off
Online: Yes
Rotation: Supported
Status: No Display Connected

Same thing here, never a sleep issue until 10.6.4. The last 2 mornings I have no way to wake the machine. I have to hold the power button and shut down. Completely unresponsive.

Three monitors with one video card???

I have the H520 (Intel HD onboard graphics, HDMI and VGA out, i%, 8GB RAM< 2TB drive) driving two monitors. I have a business need to deive three monitors.
I spent 12 hours trying to get an EVGA GT 640 sc to work, having tried many approaches per EVGA support, such as disabling Secure Boot, Quick Boot, ad infinitum. Nothing was successful (for long), and that card goes back today.
I don't mind buying an aftermarket card that would frive, say one HDMI and two DVI out, but I was told by Lenovo TS that "some of the computers allow an addon VGA card without disabling onboard video. Simple VGA or better, DVI would do nicely.
Does anyone know such a card (I am prepared to install any power supply needed), or if a VGA card can be used with the onboard grapics chip? I only need VGA on the second and third monitor, and if a simple card will coexist with the Intel HD onboard that would be my first choice.
Thanks.

Thanks, Ex, I have seen those, but:
1) I am already USB-slot restrained (planning to add a USB 3.0 card, if the system allows), and
2) I have not read up on it, but wonder hor USB (especially 2.0) could provide the bandwidth of PCIe x16 or even x1.

Three monitor setup

I have an Envy 700 339 desktop running windows 8 I want to set up three monitors ...PC existing card has 1-dvi, 1-hdmi...monitors are samsung 27" hdmi and have dvi/hdmi in/out
Do I need another card for optimum setup or am I missing something?
I purchased an hdmi splitter which works great for duplication but not for extended desktop.... I am not a gamer so I am not looking for fully extended, but simply two more monitors for moving windows around and other applications etc... My apologies if this is a rudimentary question I'm no techie for sure

Brian, welcome to the forum.
Here is what you need to do what you want to do:
http://www.startech.com/AV/USB-Video-Adapters/USB-3-to-HDMI-DVI-External-Video-Card-Multi-Monitor-Ad...
Please click the "Thumbs up + button" if I have helped you and click "Accept as Solution" if your problem is solved.
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Three monitor setup, Only use one of them?

Hi!
Before i buy a third monitor I want to make sure everything work as expected. I need to be able to switch between the monitors so sometimes I want all of them to be active, sometimes only two or one of them. How do i switch between those modes?
I have two now and its easy in Windows + P where i can choose "PC Screen only" and "Second Screen Only" or extend. How does it looks with three monitors? What i want to switch between First & Second and Second & Third ?
Thanks for the help!

I shall suggest you to go through the following article:
Nice Multi-Monitor Enhancements in Windows 8.1
You may try DisplayLink
S.Sengupta, Windows Entertainment and Connected Home MVP

Three Monitor Save, Two Monitor Hang- CS6

I have three monitors running from my Dell M6600 at work. I save a Premiere Project with any panel open on the third monitor. Then take my computer home where I only have two monitors and open the project file, Premiere hangs. It will never launch the application fully. It opens to the point where it would normally load project data, and then hangs.
As a workarround I have begun making sure I save the project with all panels on two screens. However, if I forget then the only solution I have is to go to work to open the project. (Or get a third monitor at home...)
I would love to be able to edit the project XML and remove or reset the panel layout. Anyone else experiencing this issue? or know how to "hack/workaround" the project file?

Jim Simon wrote:
I don't think that's correct. Each project loads with the last saved window arrangement, named or not. So he'll need to rearrange the windows before saving at work (or get that third monitor at home).
I'm just going by the help file:
http://helpx.adobe.com/premiere-pro/using/workspaces.html
"If a project saved with a custom workspace is opened on another system, the application looks for a workspace with a matching name. If it can’t find a match (or the monitor configuration doesn’t match), it uses the current local workspace."
But like I said, I haven't tested it out myself.

Distribute video output over three monitors (+ another)

Hi there,
I've got a triple beamer setup + a Cinema Display. My Mac Pro has two ATI Radeon HD 2600 XT cards. What I need to do now is use the monitor as an operating monitor and combine/distribute the triple beamers in such a way that I can play one 1920 x 480 video file over all three monitors simultaneously, for an event.
The two ATI 2600 cards are especially in there to be able to do this, but when I try to combine the monitors through display settings or through the Quicktime settings, it just doesn't seem possible. VLC won't play my ProRes 422 material, but I could re-render off course when the video is done.
Is my only option a bloody €200,- video splitter, or can I do this 'the software way?'. I find it so hard to imagine that what I want wouldn't be possible with all the hardware power I've already got! Friendly greetings, Douwe.

If you click the "?" in the "Arrangement" tab of "Displays" system preference, it will tell you how to set three out of the four displays to mirror mode, leaving the fourth separate.

Aperture, Mavericks, three monitors

Anyone?
I have a (late '13) 15" rMBP, and two external monitors. I would like to do two things, neither of which I know how:
1. Use the keyboard and touchpad of the laptop, but turn the laptop screen off and use only the two external monitors in a dual-monitor set-up. (Clamshell mode works great, but then I need an external keyboard and pointing device.)
2. Use all three monitors, with Aperture on the two external monitors (as primary and secondary) and either use the laptop screen for other windows/HUDS, or other programs. The problem here is that with two external monitors, Aperture mirrors the secondary display on the third display.
I had no touble running a three monitor display on Mavericks. The two external displays have DVI ports (iirc). With one, I used a DVI-MiniDisplayPort dongle. With the other, a special cable I got from NEC to goes from DVI on one end to MiniDisplayPort on the other. The MiniDisplayPort connector fits in the Thunderbolt ports of the MBP, and works. (I've been using the monitors separately in dual-monitor mode with the laptop for a while.)

if i plug in a monitor to my 2nd vid card aperture crashes too ...
i would like to be able to put aperture on three monitors as well ...
apparently we are in the minority ... i have just taken my third offline totally ... and since i use PS less and less every day and added a 30" it hasn't really been a factor for most everything else ... but i would love to have my image on the 30, my browser/project view on one 23 and the huds, etc on the other 23 ...
maybe some day, the kinks will work out ...

Three Monitors in a Power Mac

Dear All,
I have a Power Mac with the ATI Radeon HD 5770 card, I need to connect three monitors to that card. The main one and I need the second and third monitor having the same video or image, I already bought a DVI splliter and did not work, and also I used two mini DVI connecters and the regular DVI with three monitors and I am not getting the three signals.
Thanks a lot for your suggestions.
ATI Radeon HD 5770 Graphics

The Apple articles tell you the path Apple has laid out for your success, but not the entire picture.
To drive three displays off these cards, you need all converters to be ACTIVE, POWERED converters. The signal levels must be re-driven, and the Driver circuits to do this cannot quite get enough power off the card itself to do this.
This article on AMD/ATI web site has an additional descriptions and "Rules" in the paragraphs at the top of the page. The tables below list some qualified adapters under the correct headings.
Read Carefully: DisplayPort is not MINI DisplayPort, and there are headings for ACTIVE as well as PASSIVE included.
Also note that Amazon searches do not always return EXACT results.
"Dual-Link" contain double data signals, for servicing SINGLE displays that are wider than 1920 wide.
The Mac is completely capable of Mirroring displays in any combination on the same Display card.
The USB-to-DVI box BDAqua cited is an interesting way to get an additional display output, but is probably not needed since your 5770 can already support three displays if you use the right adapters. It is said to be s-l-o-w.

Using three monitors with keynotes?

I have three monitors on my mac book and want to use the presenter view on two of the monitors and the show on the third. Is there an app or patch I can use to do this?

Thanks very much, perfect!
Only thing is you don't need to press the "?" button. But it seems a little temperamental when you option + click + drag. I found you to have to deselect but clicking anywhere in the window and reselected the window you wish to mirror (which I assume press the "?" does the same thing).
I never thought it was going to be this simple, I was sure I would need to install a third party app or something.
Thanks again!!!!!!!

Three Monitors - How to change alternate

I have three monitors connected to my Mac Pro. I like to use an alternate monitor to view my photos, but Aperture is not selecting the monitor I want as the alternate. How do I tell aperture to use a different monitor as the alternate monitor.

Aperture doesn't support 3 monitors

How to fix three monitors after installing latest Mac update?

I installed the latest release, OS X 10.9.3 (13D65), and now my three monitors are all messed up. I tried going into sytem preferences and looking at the monitor set up there, but nothing helped.
When I move my mouse, I never know where it is going to show up, and it does not move properly from one screen to another.
Any ideas?

From the Mac discussion forums: http://discussions.apple.com/thread.jspa?messageID=4930170&#4930170
Try this: download and retrofit (force install) QT 7.1.6 using Pacifist, then run the 10.4.10 Combo Updater for Intel Macs. Make sure it is the "combo" updater. Be sure to restart in safe mode after using Pacifist and then install/re-install the combo update (while in safe mode). For all those "non-techie" people (like myself), please try this if you already haven't and please read the instructions for Pacifist - if you use Pacifist correctly, it will ask you if you want to replace (vs. update) all of the Quicktime components (yes, you want to replace), so you will know that you are accomplishing what you need to. The first fix I tried was just to reinstall the Mac OSX10.4.10 combo update for Intel Macs and this did not work, but when I used Pacifist and then reinstalled the MacOS X combo updater (do not get this confused with the update that is not the "combo" one- (use the links), it worked! I am not a web developer, so did not have to deal with the Java 6 stuff.
Combo Intel update is here:
http://www.apple.com/downloads/macosx/apple/macosx_updates/macosx10410comboupdat ev11intel.html
QuickTime 7.1.6 is here:
http://www.apple.com/support/downloads/quicktime716formac.html
Pacifist is here:
http://www.charlessoft.com

Three monitors cause Aperture to crash immediately

Hi all,
On a Mac Pro, I have two video cards. Two monitors are plugged into an ATI 1900XT (20" portrait and 24" landscape) and one 22" in an NVIDIA GeForce 7300 GT.
All applications behave wonderfully except for Aperture. When I launch aperture, it crashes seconds after displaying some thumbnails. If I unplug the third monitor (the one on the 7300 GT), launch Aperture then plug the third monitor back in, Aperture crashes right away.
Does anyone have any experience with a similar set up ?

if i plug in a monitor to my 2nd vid card aperture crashes too ...
i would like to be able to put aperture on three monitors as well ...
apparently we are in the minority ... i have just taken my third offline totally ... and since i use PS less and less every day and added a 30" it hasn't really been a factor for most everything else ... but i would love to have my image on the 30, my browser/project view on one 23 and the huds, etc on the other 23 ...
maybe some day, the kinks will work out ...

Three monitors on T520, Linux

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