Internal Laptop display not detected

After failing to get Bumblebee to work with my External Monitor (xrandr didn’t “see” it), I reinstalled Debian. In a Nvidia Dev Forum tread (don’t find it atm) installing the 384 was recommended. With this setup i got nvidia to work on my external monitor with X. I am using gdm3 as a display Manager. Booting without my Monitor would result X in crashing with (EE) Screen not found.

Reversing this setting by commenting the WaylandEnable=false in /etc/gdm3/daemon.conf would allow my to start Gnome(Wayland) on my Laptop Display.
Now starting with wayland results in a loop at Boot.

How do I get Nvidia to recognize my 2 Screens?

>lspci                                      
    00:00.0 Host bridge: Intel Corporation Xeon E3-1200 v6/7th Gen Core Processor Host Bridge/DRAM Registers (rev 05)
    00:01.0 PCI bridge: Intel Corporation Skylake PCIe Controller (x16) (rev 05)
    00:02.0 VGA compatible controller: Intel Corporation Device 591b (rev 04)
    00:14.0 USB controller: Intel Corporation Sunrise Point-H USB 3.0 xHCI Controller (rev 31)
    00:14.2 Signal processing controller: Intel Corporation Sunrise Point-H Thermal subsystem (rev 31)
    00:15.0 Signal processing controller: Intel Corporation Sunrise Point-H Serial IO I2C Controller #0 (rev 31)
    00:15.1 Signal processing controller: Intel Corporation Sunrise Point-H Serial IO I2C Controller #1 (rev 31)
    00:16.0 Communication controller: Intel Corporation Sunrise Point-H CSME HECI #1 (rev 31)
    00:17.0 SATA controller: Intel Corporation Sunrise Point-H SATA Controller [AHCI mode] (rev 31)
    00:1c.0 PCI bridge: Intel Corporation Sunrise Point-H PCI Express Root Port #1 (rev f1)
    00:1c.4 PCI bridge: Intel Corporation Sunrise Point-H PCI Express Root Port #5 (rev f1)
    00:1c.5 PCI bridge: Intel Corporation Sunrise Point-H PCI Express Root Port #6 (rev f1)
    00:1c.6 PCI bridge: Intel Corporation Sunrise Point-H PCI Express Root Port #7 (rev f1)
    00:1f.0 ISA bridge: Intel Corporation Sunrise Point-H LPC Controller (rev 31)
    00:1f.2 Memory controller: Intel Corporation Sunrise Point-H PMC (rev 31)
    00:1f.3 Audio device: Intel Corporation CM238 HD Audio Controller (rev 31)
    00:1f.4 SMBus: Intel Corporation Sunrise Point-H SMBus (rev 31)
    01:00.0 3D controller: NVIDIA Corporation GP107M [GeForce GTX 1050 Ti Mobile] (rev a1)
    03:00.0 Unassigned class [ff00]: Realtek Semiconductor Co., Ltd. RTS522A PCI Express Card Reader (rev 01)
    04:00.0 Network controller: Intel Corporation Wireless 8265 / 8275 (rev 78)
    05:00.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller (rev 15)
uname -a
    Linux hostname 4.13.0-1-amd64 #1 SMP Debian 4.13.4-2 (2017-10-15) x86_64 GNU/Linux

The new xorg.conf with --enable-all-gpus --separate-x-screens , no different experience to old.

`cat /etc/X11/xorg.conf`:

    # nvidia-xconfig: X configuration file generated by nvidia-xconfig
    # nvidia-xconfig:  version 384.90  (buildmeister@swio-display-x86-rhel47-05)  Tue Sep 19 18:13:03 PDT 2017
    
    
    Section "ServerLayout"
        Identifier     "Layout0"
        Screen      0  "Screen0"
        Screen      1  "Screen0 (1)" RightOf "Screen0"
        Screen      2  "Screen0 (2)" RightOf "Screen0 (1)"
        Screen      3  "Screen0 (3)" RightOf "Screen0 (2)"
        InputDevice    "Keyboard0" "CoreKeyboard"
        InputDevice    "Mouse0" "CorePointer"
    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"
        Identifier     "Monitor0"
        VendorName     "Unknown"
        ModelName      "Unknown"
        HorizSync       28.0 - 33.0
        VertRefresh     43.0 - 72.0
        Option         "DPMS"
    EndSection
    
    Section "Device"
        Identifier     "Device0"
        Driver         "nvidia"
        VendorName     "NVIDIA Corporation"
        BoardName      "GeForce GTX 1050 Ti"
        BusID          "PCI:1:0:0" #manually added
        Screen          0
    EndSection
    
    Section "Device"
        Identifier     "Device0 (1)"
        Driver         "nvidia"
        VendorName     "NVIDIA Corporation"
        BoardName      "GeForce GTX 1050 Ti"
        BusID          "PCI:1:0:0" 
        Screen          1
    EndSection
    
    Section "Device"
        Identifier     "Device0 (2)"
        Driver         "nvidia"
        VendorName     "NVIDIA Corporation"
        BoardName      "GeForce GTX 1050 Ti"
        BusID          "PCI:1:0:0"
        Screen          2
    EndSection
    
    Section "Device"
        Identifier     "Device0 (3)"
        Driver         "nvidia"
        VendorName     "NVIDIA Corporation"
        BoardName      "GeForce GTX 1050 Ti"
        BusID          "PCI:1:0:0"
        Screen          3
    EndSection
    
    Section "Screen"
        Identifier     "Screen0"
        Device         "Device0"
        Monitor        "Monitor0"
        DefaultDepth    24
        SubSection     "Display"
            Depth       24
        EndSubSection
    EndSection
    
    Section "Screen"
        Identifier     "Screen0 (1)"
        Device         "Device0 (1)"
        Monitor        "Monitor0"
        DefaultDepth    24
        SubSection     "Display"
            Depth       24
        EndSubSection
    EndSection
    
    Section "Screen"
        Identifier     "Screen0 (2)"
        Device         "Device0 (2)"
        Monitor        "Monitor0"
        DefaultDepth    24
        SubSection     "Display"
            Depth       24
        EndSubSection
    EndSection
    
    Section "Screen"
        Identifier     "Screen0 (3)"
        Device         "Device0 (3)"
        Monitor        "Monitor0"
        DefaultDepth    24
        SubSection     "Display"
            Depth       24
        EndSubSection
    EndSection

The old, manually modified xorg.conf:

`cat /etc/X11/xorg.conf.backup`: 

    # nvidia-xconfig: X configuration file generated by nvidia-xconfig
    # nvidia-xconfig:  version 384.90  (buildmeister@swio-display-x86-rhel47-05)  Tue Sep 19 18:13:03 PDT 2017
    
    Section "ServerLayout"
        Identifier     "Layout0"
        Screen      0  "Screen0"
        InputDevice    "Keyboard0" "CoreKeyboard"
        InputDevice    "Mouse0" "CorePointer"
    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"
        Identifier     "Monitor0"
        VendorName     "Unknown"
        ModelName      "Unknown"
        HorizSync       28.0 - 33.0
        VertRefresh     43.0 - 72.0
        Option         "DPMS"
    EndSection
    
    Section "Device"
        Identifier     "Device0"
        Driver         "nvidia"
        VendorName     "NVIDIA Corporation"
        BoardName      "GeForce GTX 1050 Ti"
        BusID          "PCI:1:0:0" #Manually added
    EndSection
    
    
    
    Section "Device" #Manually added
        Identifier     "intelhd4000" #Manually added
        Driver         "intel" #Manually added
        BusID          "PCI:2:0:0" #Manually added
    EndSection       #Manually added
    
    
    Section "Screen"
        Identifier     "Screen0"
        Device         "Device0"
        Monitor        "Monitor0"
        DefaultDepth    24
        SubSection     "Display"
            Depth       24
        EndSubSection
    EndSection

Thanks in advance!

See this how to get PRIME working:
https://devtalk.nvidia.com/default/topic/1022670/linux/official-driver-384-59-with-geforce-1050m-doesn-t-work-on-opensuse-tumbleweed-kde/post/5203910/#5203910