Nvidia-settings doesn't detect second monitor on Kubuntu 15.10

D0kter

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Dec 18, 2015
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On Kubuntu 15.10, when I plug in a VGA monitor to the motherboard and an HDMI monitor to the GPU, the Nvidia-settings doesn't detect the VGA monitor after I click on Detect Displays.
The VGA monitor shows up on KDE Plasma 5 display settings, but it starts bugging out, for example sometimes when I arrange the monitor squares and after I click on a monitor square the arrangement resets, or the persistent bug is if the arrangement stays then after restarting, the arrangement resets to default.
I read somewhere that plugging in the VGA into the GPU fixes the problem, but the GTX 960 doesn't have a VGA port.
In BIOS I've set Initiate Graphic Adapter to PEG with IGD multi monitor enabled.
Motherboard: MSI H81M-P33 (MS-7817) (SOCKET 0)
Graphics: 2048MB NVIDIA GeForce GTX 960 (MSI), Intel HD Graphics 4600 (MSI)
 
Solution
As others said it does not show up in nvidia because it is attached to intel graphics. I have similar setup but with AMD card. You can probably enable it with xrandr or one of its guis. What does this command output?

Code:
xrandr --query

Nekrosys

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Dec 22, 2015
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Nvidia display won't detect the VGA monitor if it's connected to the motherboard because well.. it's not connected to the GPU. You could buy a VGA to DVI adapter and connect the VGA monitor to your GPU
 

D0kter

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Dec 18, 2015
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I would, but this is a software problem, because the dual monitor setup works perfectly fine on Windows 10.
 
As others said it does not show up in nvidia because it is attached to intel graphics. I have similar setup but with AMD card. You can probably enable it with xrandr or one of its guis. What does this command output?

Code:
xrandr --query
 
Solution