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Old 06-23-2017, 04:54 PM   #1
volksrmart6
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Registered: Jun 2017
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3rd display not detected Ubuntu 16.04 on NVIDIA GT 710


Ubuntu 16.04 LTS
NVIDIA 376 drivers
GT 710 2GB video card
HP MicroTower 6000 pro

I am running dual monitors flawlessly using both the VGA and HDMI ports. I would like to add a third monitor. When connecting my third monitor to the dvi-d port w/ my active dvi to vga adapter, my monitor is not detected and screen is black. Not only does my 3rd monitor say no signal but it causes one of my other working monitors to go black and no signal.

I have reinstalled the nvidia drivers. I though maybe it was a connection issue, which is why i am using a active adapter. Is there a way for me to setup this up manually? I know i am missing a configuration step here but would be greatfull for some guidance.

thank you in advance.
 
Old 06-24-2017, 10:41 AM   #2
Soadyheid
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Registered: Aug 2010
Location: Near Edinburgh, Scotland
Distribution: Cinnamon Mint 20.1 (Laptop) and 18.3 (Desktop)
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Hi, Welcome to Linux Questions!

The GT 710 video card has a DVI-D port which supports digital signals only, not analogue.

A DVI-I port supports both digital and analogue and will work with an active DVI to VGA adapter where DVI-D wont. (I think the clue is in the "D" = digital )

You need to connect the DVI-D port on the card to a monitor with a DVI port. i.e. NOT the VGA port.

Hope that helps,

Play Bonny!


Last edited by Soadyheid; 06-24-2017 at 10:49 AM.
 
Old 06-24-2017, 11:10 PM   #3
AwesomeMachine
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Are you sure your card has VGA ports? Those are 15-pin d-sub connectors.
 
Old 06-25-2017, 08:00 AM   #4
Soadyheid
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@ AwsomeMachine:

See my link above, spec states:
Quote:
GT 710 Display Support:
2560x1600*Maximum Digital Resolution
2048x1536Maximum VGA Resolution

Standard Display Connectors

Dual Link DVI-D
HDMI
VGA

3 displaysMulti Monitor
Play Bonny!


Last edited by Soadyheid; 06-25-2017 at 08:01 AM.
 
Old 06-27-2017, 03:38 PM   #5
DVOM
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Registered: Nov 2010
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Try a different kernel. I've got 3 monitors and when I had xubuntu 14.04.5, it came with kernel 4.4.0, (IIRC) and wouldn't light up all 3 monitors. I tried kernel 4.5.0 and 4.6.0 and finally kernel 4.3.0 did the trick.
 
  


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