Acknowledged but I am going with the latest 410.78 as you say it makes no diff so why not use the latest??

Yes, you need to Download and Install the Driver from nVidia since NO ONE has gotten the thing to work correctly with the drivers from Additional Drivers.
Follow the instructions back on Page 3;

So, 396 is in your Home folder with the Execute bit Set.

Close Any Open Apps.
Hold down the Keys Ctrl, ALT, F1 to enter the console mode.
Log In
Type, sudo service lightdm stop
Enter Password, once it's stopped,
Enter,
sudo apt-get remove --purge nvidia*
YES, include the asterisk.
Then,
sudo apt-get autoremove
That should remove the repository driver.
Enter, dir
That will list the contents of Home, you should see the 396 driver there.
Enter,
sudo ./NVIDIA-Linux-x86_64-396.54.run
Respond to the Screen prompts,
The install script will Always fail if you don't provide one, it means nothing, continue installing.
You probably don't even have 32-bit compat, keep going.
You Want To Register the Module, chose Yes.
Since you don't have a custom xorg.conf, let it build one for you.
After it'd done, sudo reboot
You might have to find nVidia Settings again, see what says for a driver version.

Or, you can install it from the Recovery Mode, which is basically the same except you are running as Root, and you don't have to stop lightdm since it's Not running in Recovery Mode. Also, in recovery mode you need to cd to your Home folder if that's where the driver is located, cd /home/username

I would suggest you install the driver First, then install the other GPUs, then reinstall the driver again telling it to update the xorg.conf with all the cards installed.
See how that works.

Okay, I get it now. I am not doing this right. I have to revert to your install instructions and stop using the "Additional Driver" nVIDIA install of 384.130.

IS THAT CORRECT?

If you haven't Downloaded the Driver from nVidia, then you Don't have the driver from nVidia installed. You have the driver from the Repository installed, not from nVidia, which is probably why no one other than Myself has been able to successfully run a Mining board. I use the Driver Downloaded from nVidia.

If you did install the driver from nVidia, then Why didn't you have an xorg.conf ???
If you actually do install the driver from nVidia, you can tell it to update the xorg.conf and it will update it Correctly.
I seriously doubt you are adding devices correctly, for one, you have to add to Every section, Not just the device section.

I strongly suggest you let the installer edit the xorg.conf file. If you screw up that file you won't even get a screen display and will have to remove it running from the recovery mode to even use the machine.

I do have one ASUS card and 4 MSI GTX 1060's now so its true you can run whatever...
WOW! 5 GPU's in, 5 GPU's showing!

I'M GETTING EXCITED AGAIN!

Well, GPU #5 was not detected so i just added 12 device statements.
We will see what happens now...

Well, I just winged it. Incremented the PCI address # and device #.
I see the system does not add anything to that file so I am adding them as I add GPU's...

We shall see...

If I have to add the GPU statements manually how do I figure out what the PCI addresses is of each?

And yes of course I have nVidia driver installed...

So I see the 3 GPU statements listed in your example.
Will the system automatically generate the required EXTRA statements for all the other GPU's as I add them or do I have to add them manually to this file?
What is the ramifications of having more GPU statements then GPU's installed?

I opened that file and there was nothing like what you say should be in there!
Doing the copy paste thing now of your content.

I went to that folder location and the only thing there is xorg.conf.failsafe
Attempting to make the file you suggest...

Wow!

I'm burned out.
I'll try tomorrow.

Did you ever install the Driver from nVidia and create a New xorg.conf?
Do you have an xorg.conf in /etc/X11 and does it mention intel or nvidia under the device section? It Must say nvidia, or it won't work correctly.

The easiest way to edit the xorg.conf is to run gksu nautilus in the terminal, which will open a file browser window with root privileges. Open Computer/etc/X11/xorg.conf with gedit and replace whatever is there with the following by copying and pasting. If you don't have gksu, install it. If you don't have an xorg.conf then make one. This is from a machine with 3 GPUs, it will work on any machine as long as it's using nVidia GPUs.

# nvidia-xconfig: X configuration file generated by nvidia-xconfig
# nvidia-xconfig:  version 384.13  (buildmeister@swio-display-x64-rhel04-15)


Section "ServerLayout"
    Identifier     "Layout0"
    Screen      0  "Screen0" 0 0
    Screen      1  "Screen1" RightOf "Screen0"
    Screen      2  "Screen2" RightOf "Screen1"
    InputDevice    "Keyboard0" "CoreKeyboard"
    InputDevice    "Mouse0" "CorePointer"
    Option         "Xinerama" "0"
EndSection

Section "Files"
EndSection

Section "InputDevice"

    # generated from default
    Identifier     "Mouse0"
    Driver         "mouse"
    Option         "Protocol" "auto"
    Option         "Device" "/dev/psaux"
    Option         "Emulate3Buttons" "no"
    Option         "ZAxisMapping" "4 5"
EndSection

Section "InputDevice"

    # generated from default
    Identifier     "Keyboard0"
    Driver         "kbd"
EndSection

Section "Monitor"

    # HorizSync source: edid, VertRefresh source: edid
    Identifier     "Monitor0"
    VendorName     "Unknown"
    ModelName      "ViewSonic"
    HorizSync       24.0 - 82.0
    VertRefresh     50.0 - 75.0
    Option         "DPMS"
EndSection

Section "Monitor"

    # HorizSync source: edid, VertRefresh source: edid
    Identifier     "Monitor1"
    VendorName     "Unknown"
    ModelName      "ViewSonic"
    HorizSync       24.0 - 82.0
    VertRefresh     50.0 - 75.0
    Option         "DPMS"
EndSection

Section "Monitor"

    # HorizSync source: unknown, VertRefresh source: unknown
    Identifier     "Monitor2"
    VendorName     "Unknown"
    ModelName      "ViewSonic"
    HorizSync       0.0 - 0.0
    VertRefresh     0.0
    Option         "DPMS"
EndSection

Section "Device"
    Identifier     "Device0"
    Driver         "nvidia"
    VendorName     "NVIDIA Corporation"
    BoardName      "GeForce GTX 1060"
    BusID          "PCI:1:0:0"
EndSection

Section "Device"
    Identifier     "Device1"
    Driver         "nvidia"
    VendorName     "NVIDIA Corporation"
    BoardName      "GeForce GTX 1060"
    BusID          "PCI:2:0:0"
EndSection

Section "Device"
    Identifier     "Device2"
    Driver         "nvidia"
    VendorName     "NVIDIA Corporation"
    BoardName      "GeForce GTX 1060"
    BusID          "PCI:3:0:0"
EndSection

Section "Screen"
    Identifier     "Screen0"
    Device         "Device0"
    Monitor        "Monitor0"
    DefaultDepth    24
    Option         "Coolbits" "28"
    Option         "Stereo" "0"
    Option         "nvidiaXineramaInfoOrder" "DFP-0"
    Option         "metamodes" "nvidia-auto-select +0+0"
    Option         "SLI" "Off"
    Option         "MultiGPU" "Off"
    Option         "BaseMosaic" "off"
    SubSection     "Display"
        Depth       24
    EndSubSection
EndSection

Section "Screen"
    Identifier     "Screen1"
    Device         "Device1"
    Monitor        "Monitor1"
    DefaultDepth    24
    Option         "Coolbits" "28"
    Option         "Stereo" "0"
    Option         "nvidiaXineramaInfoOrder" "CRT-0"
    Option         "metamodes" "nvidia-auto-select +0+0"
    Option         "SLI" "Off"
    Option         "MultiGPU" "Off"
    Option         "BaseMosaic" "off"
    SubSection     "Display"
        Depth       24
    EndSubSection
EndSection

Section "Screen"
    Identifier     "Screen2"
    Device         "Device2"
    Monitor        "Monitor2"
    DefaultDepth    24
    Option         "Coolbits" "28"
    Option         "Stereo" "0"
    Option         "metamodes" "nvidia-auto-select +0+0"
    Option         "SLI" "Off"
    Option         "MultiGPU" "Off"
    Option         "BaseMosaic" "off"
    SubSection     "Display"
        Depth       24
    EndSubSection
EndSection

5th GPU never booted to the desktop. Posted okay but never made it to the desktop...

5th GPU had no post issues but boot is still going....

My on board video is off now as well.
4G on, GEN3, MB with 4th card installed posted okay, took about 8 min to boot to desktop, all 4 GPU's are there!
Dare I try a 5th? That usually results in VERY long boot to desktop and or MB post issues....

F3 and 3 GPU's so far so good fast booting...

Does installing the NV driver through software updates do this xorg.conf step?

I'm using the F3 BIOS. The onboard video is Disabled in BIOS on my machine. If you look at that onboard video you will see it is being rerouted from the NV Video cards by the Repository driver, look at your /etc/X11/xorg.conf and you will see the pass through command. The driver Downloaded from NV doesn't use the onboard video at all, so it is Disabled. You need to have the driver from NV build a NEW xorg.conf after it installs the driver. The new xorg.conf will be basic, I have customized mine to include the coolbits OCing on all cards, this means 11 devices listed in xorg.conf. But, the basic xorg.conf should work as long as it DOESN'T Mention the onboard video. I think I've mentioned the xorg.conf earlier in this thread, you need to install the NV driver and have it build a New xorg.conf. How to Install the driver from NV was also mentioned earlier in this thread.