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Sharing Monitors Between Computers or Multiple Graphics Output to One Monitor
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Sharing Monitors Between Computers or Multiple Graphics Output to One Monitor

  #1 (permalink)
Elite Member
Fairfax VA
 
Futures Experience: Beginner
Platform: NinjaTrader
 
Posts: 36 since Dec 2009
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Sharing Monitors Between Computers or Multiple Graphics Output to One Monitor

You can use all of a monitor's inputs and switch between them with the Source button on the monitor. I have four monitors rotated to portrait 1200x1920. My primary computer is connected to the Digital inputs, giving a desktop of 4800x1920. My backup computer is connected to three of the Analog inputs, giving a desktop of 3600x1600. A third computer is connected to the Analog input of the last monitor with a desktop of 1200x1600.

If your monitor has HDMI inputs, there are DVI to HDMI adapters and cables available. You could use the monitor's Source button to switch between all inputs, including HDMI. Having the same computer connected to multiple inputs on a single monitor is possible, but it will be easy to miss messages and confirmation requests on the undisplayed Source input.

A note on driving 4 monitors: Just because a graphics card has 4 outputs, it does not mean that all four can be used to create one large desktop. Some graphics cards only allow the 4th output to be a clone of one of the other outputs. My primary computer uses 3 of the 4 outputs of the graphics card and the motherboard's Video output to create the desktop. If your motherboard has a Video output, a BIOS setting is usually required to activate it while a graphics card is installed.

Have used my setup with combinations of XP, Win 7, Win 8 & 8.1, and Win 10 with physical computers and VMs with no problems. Combinations of desktop and laptop computers no problems either.

Caution: Always power off computer and ALL monitors connected to the computer when connecting or disconnecting monitor cables. Failure to do this can result in damage to devices on either or both ends of cables. Also, if adding or removing cards or memory then unplug the computer and wait for the motherboard's LEDs to turn off. Pressing and holding the power button with computer unplugged will drain the capacitors faster.


Last edited by Big Mike; September 23rd, 2015 at 12:09 PM.
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  #2 (permalink)
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Omer עומר / Israel י
 
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rleplae's Avatar
 
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I have a graphics card with 6 monitor outputs. (connected through mini-port display cables)

I have been struggling with an issue that happens from time to time, that one of the monitors (seems random) is not detected and then the desktop that spans the 6 monitors gets reshuffled and Ninjatrader will reshuffle the windows on that desktop to be something very awkward, bringing the screen 'on', will not automatically fix the desktop issue.

The solution is then to exist NT, (do not save settings !) and restart NT and the desktop with the windows will come on OK.
it is a waste of time and if it happens in the heat of a trade, it is extremely disturbing...

Any clues, ideas, tricks ?

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  #3 (permalink)
Elite Member
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Futures Experience: Beginner
Platform: NinjaTrader
 
Posts: 36 since Dec 2009
Thanks: 1 given, 22 received


rleplae, I suggest troubleshooting this problem by doing the following:
1) To prevent hardware damage, read and follow the caution at the link in the first post of this thread, which is:

Caution: Always power off computer and ALL monitors connected to the computer when connecting or disconnecting monitor cables. Failure to do this can result in damage to devices on either or both ends of cables. Also, if adding or removing cards or memory then unplug the computer and wait for the motherboard's LEDs to turn off. Pressing and holding the power button with computer unplugged will drain the capacitors faster.

2)
a) Disconnect all graphics cables from monitors and graphics card.
b) Remove graphics card. It is held in the connector by a plastic clip that must be raised slightly to remove card. Only raise clip enough to remove card. Avoid touching edge contacts on card.
c) With a pencil eraser, clean contacts on both sides of graphics card, blowing away ALL eraser dust.
d) Re-seat graphics card into motherboard.
e) Reconnect graphics cables to graphics card.
f) Reconnect graphics cables to monitors. Insert connector straight, all the way into monitor connector. Hold and tighten.
g) Reconnect power cord to computer then power on monitors and computer.
h) Check that all monitors are functioning.

3)
a) Check graphics card's support site for latest firmware and drivers/software for your OS. Update firmware/drivers/software if newer available.
b) Check graphics card's support forum for reports of similar problems.

If problem reoccurs, post here with your OS version, graphs card brand and model number.

Good Luck!


Last edited by JimWalker; September 22nd, 2015 at 11:03 AM.
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  #4 (permalink)
Elite Member
Omer עומר / Israel י
 
Futures Experience: Master
Platform: NinjaTrader, Proprietary,
Broker/Data: Ninjabrokerage/IQfeed + Synthetic datafeed
Favorite Futures: 6A, 6B, 6C, 6E, 6J, 6S, ES, NQ, YM, AEX, CL, NG, ZB, ZN, ZC, ZS, GC
 
rleplae's Avatar
 
Posts: 2,501 since Sep 2013
Thanks: 1,706 given, 3,708 received
Forum Reputation: Legendary


JimWalker View Post
rleplae, I suggest troubleshooting this problem by doing the following:
1) To prevent hardware damage, read and follow the caution at the link in the first post of this thread, which is:

Caution: Always power off computer and ALL monitors connected to the computer when connecting or disconnecting monitor cables. Failure to do this can result in damage to devices on either or both ends of cables. Also, if adding or removing cards or memory then unplug the computer and wait for the motherboard's LEDs to turn off. Pressing and holding the power button with computer unplugged will drain the capacitors faster.

2)
a) Disconnect all graphics cables from monitors and graphics card.
b) Remove graphics card. It is held in the connector by a plastic clip that must be raised slightly to remove card. Only raise clip enough to remove card. Avoid touching edge contacts on card.
c) With a pencil eraser, clean contacts on both sides of graphics card, blowing away all eraser dust.
d) Re-seat graphics card into motherboard.
e) Reconnect graphics cables to graphics card.
f) Reconnect graphics cables to monitors. Insert connector straight, all the way into monitor connector. Hold and tighten.
g) Reconnect power cord to computer then power on monitors and computer.
h) Check that all monitors are functioning.

3)
a) Check graphics card's support site for latest firmware and drivers/software for your OS. Update firmware/drivers/software if newer available.
b) Check graphics card's support forum for reports of similar problems.

If problem reoccurs, post here with you OS version and graphs card brand and model number.

Good Luck!

it is a software issue, i think @BigMike has had slightly similar issues
i use the AMD fire pro W600
i have been unable to find updated drivers or solve the issue

running windows pro 8.1

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  #5 (permalink)
Elite Member
Fairfax VA
 
Futures Experience: Beginner
Platform: NinjaTrader
 
Posts: 36 since Dec 2009
Thanks: 1 given, 22 received

rleplae, I have seen slightly misaligned graphics cards create similar problems. Doing what I suggested won't hurt and may fix your problem. Up to you.

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  #6 (permalink)
Elite Member
Omer עומר / Israel י
 
Futures Experience: Master
Platform: NinjaTrader, Proprietary,
Broker/Data: Ninjabrokerage/IQfeed + Synthetic datafeed
Favorite Futures: 6A, 6B, 6C, 6E, 6J, 6S, ES, NQ, YM, AEX, CL, NG, ZB, ZN, ZC, ZS, GC
 
rleplae's Avatar
 
Posts: 2,501 since Sep 2013
Thanks: 1,706 given, 3,708 received
Forum Reputation: Legendary


JimWalker View Post
rleplae, I have seen slightly misaligned graphics cards create similar problems. Doing what I suggested won't hurt and may fix your problem. Up to you.

I will do the test next month, i have remote access but no physical access
as the server is still in Belgium and i'm in Israel until 1 October.

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