cloasters: just going back to basics, please could you post the outputs of either lshw or inxi -Fx depending on what you have installed?
Also, was this a completely fresh installation (as in completely bare drive) or did you leave your /home directories in place?
		
		
	 
OK
george@george-System-Product-Name:~$ sudo lshw
[sudo] password for george:           
george-system-product-name 
    description: Desktop Computer
    product: System Product Name (SKU)
    vendor: System manufacturer
    version: System Version
    serial: System Serial Number
    width: 64 bits
    capabilities: smbios-3.0 dmi-3.0 smp vsyscall32
    configuration: boot=normal chassis=desktop family=Default string sku=SKU uuid=201F48C0-BA72-E311-B27B-F832E4BA590C
  *-core
       description: Motherboard
       product: Z170-P
       vendor: ASUSTeK COMPUTER INC.
       physical id: 0
       version: Rev X.0x
       serial: 150955478201342
       slot: Default string
     *-firmware
          description: BIOS
          vendor: American Megatrends Inc.
          physical id: 0
          version: 0408
          date: 09/06/2015
          size: 64KiB
          capacity: 15MiB
          capabilities: pci apm upgrade shadowing cdboot bootselect socketedrom edd int13floppy1200 int13floppy720 int13floppy2880 int5printscreen int9keyboard int14serial int17printer acpi usb biosbootspecification uefi
     *-cache:0
          description: L1 cache
          physical id: 3f
          slot: L1 Cache
          size: 128KiB
          capacity: 128KiB
          capabilities: synchronous internal write-back data
          configuration: level=1
     *-cache:1
          description: L1 cache
          physical id: 40
          slot: L1 Cache
          size: 128KiB
          capacity: 128KiB
          capabilities: synchronous internal write-back instruction
          configuration: level=1
     *-cache:2
          description: L2 cache
          physical id: 41
          slot: L2 Cache
          size: 1MiB
          capacity: 1MiB
          capabilities: synchronous internal write-back unified
          configuration: level=2
     *-cache:3
          description: L3 cache
          physical id: 42
          slot: L3 Cache
          size: 6MiB
          capacity: 6MiB
          capabilities: synchronous internal write-back unified
          configuration: level=3
     *-cpu
          description: CPU
          product: Intel(R) Core(TM) i5-6500 CPU @ 3.20GHz
          vendor: Intel Corp.
          physical id: 43
          bus info: cpu@0
          version: Intel(R) Core(TM) i5-6500 CPU @ 3.20GHz
          serial: To Be Filled By O.E.M.
          slot: LGA1151
          size: 2839MHz
          capacity: 3600MHz
          width: 64 bits
          clock: 100MHz
          capabilities: x86-64 fpu fpu_exception wp vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe syscall nx pdpe1gb rdtscp constant_tsc art arch_perfmon pebs bts rep_good nopl xtopology nonstop_tsc cpuid aperfmperf tsc_known_freq pni pclmulqdq dtes64 monitor ds_cpl vmx smx est tm2 ssse3 sdbg fma cx16 xtpr pdcm pcid sse4_1 sse4_2 x2apic movbe popcnt tsc_deadline_timer aes xsave avx f16c rdrand lahf_lm abm 3dnowprefetch cpuid_fault invpcid_single pti ssbd ibrs ibpb stibp tpr_shadow vnmi flexpriority ept vpid fsgsbase tsc_adjust bmi1 hle avx2 smep bmi2 erms invpcid rtm mpx rdseed adx smap clflushopt intel_pt xsaveopt xsavec xgetbv1 xsaves dtherm ida arat pln pts hwp hwp_notify hwp_act_window hwp_epp md_clear flush_l1d cpufreq
          configuration: cores=4 enabledcores=4 threads=4
     *-memory
          description: System Memory
          physical id: 44
          slot: System board or motherboard
          size: 16GiB
        *-bank:0
             description: [empty]
             physical id: 0
             slot: DIMM_A1
        *-bank:1
             description: DIMM DDR4 Synchronous 2133 MHz (0.5 ns)
             product: KHX2133C14D4/8G
             vendor: Kingston
             physical id: 1
             serial: 23341718
             slot: DIMM_A2
             size: 8GiB
             width: 64 bits
             clock: 2133MHz (0.5ns)
        *-bank:2
             description: [empty]
             physical id: 2
             slot: DIMM_B1
        *-bank:3
             description: DIMM DDR4 Synchronous 2133 MHz (0.5 ns)
             product: KHX2133C14D4/8G
             vendor: Kingston
             physical id: 3
             serial: 23311764
             slot: DIMM_B2
             size: 8GiB
             width: 64 bits
             clock: 2133MHz (0.5ns)
     *-pci
          description: Host bridge
          product: Xeon E3-1200 v5/E3-1500 v5/6th Gen Core Processor Host Bridge/DRAM Registers
          vendor: Intel Corporation
          physical id: 100
          bus info: pci@0000:00:00.0
          version: 07
          width: 32 bits
          clock: 33MHz
          configuration: driver=skl_uncore
          resources: irq:0
        *-pci:0
             description: PCI bridge
             product: Xeon E3-1200 v5/E3-1500 v5/6th Gen Core Processor PCIe Controller (x16)
             vendor: Intel Corporation
             physical id: 1
             bus info: pci@0000:00:01.0
             version: 07
             width: 32 bits
             clock: 33MHz
             capabilities: pci pm msi pciexpress normal_decode bus_master cap_list
             configuration: driver=pcieport
             resources: irq:121 ioport:e000(size=4096) memory:de000000-df0fffff ioport:c0000000(size=301989888)
           *-display
                description: VGA compatible controller
                product: GM206 [GeForce GTX 950]
                vendor: NVIDIA Corporation
                physical id: 0
                bus info: pci@0000:01:00.0
                version: a1
                width: 64 bits
                clock: 33MHz
                capabilities: pm msi pciexpress vga_controller bus_master cap_list rom
                configuration: driver=nouveau latency=0
                resources: irq:130 memory:de000000-deffffff memory:c0000000-cfffffff memory:d0000000-d1ffffff ioport:e000(size=128) memory:c0000-dffff
           *-multimedia
                description: Audio device
                product: NVIDIA Corporation
                vendor: NVIDIA Corporation
                physical id: 0.1
                bus info: pci@0000:01:00.1
                version: a1
                width: 32 bits
                clock: 33MHz
                capabilities: pm msi pciexpress bus_master cap_list
                configuration: driver=snd_hda_intel latency=0
                resources: irq:17 memory:df080000-df083fff
        *-usb
             description: USB controller
             product: 100 Series/C230 Series Chipset Family USB 3.0 xHCI Controller
             vendor: Intel Corporation
             physical id: 14
             bus info: pci@0000:00:14.0
             version: 31
             width: 64 bits
             clock: 33MHz
             capabilities: pm msi xhci bus_master cap_list
             configuration: driver=xhci_hcd latency=0
             resources: irq:127 memory:df210000-df21ffff
           *-usbhost:0
                product: xHCI Host Controller
                vendor: Linux 4.15.0-54-generic xhci-hcd
                physical id: 0
                bus info: usb@1
                logical name: usb1
                version: 4.15
                capabilities: usb-2.00
                configuration: driver=hub slots=16 speed=480Mbit/s
              *-usb:0
                   description: Keyboard
                   product: Keyboard
                   vendor: Monterey International Corp.
                   physical id: 7
                   bus info: usb@1:7
                   version: 1.00
                   capabilities: usb-1.10
                   configuration: driver=usbhid maxpower=100mA speed=2Mbit/s
              *-usb:1
                   description: Mouse
                   product: USB Optical Mouse
                   vendor: PixArt
                   physical id: 8
                   bus info: usb@1:8
                   version: 1.00
                   capabilities: usb-1.10
                   configuration: driver=usbhid maxpower=100mA speed=2Mbit/s
           *-usbhost:1
                product: xHCI Host Controller
                vendor: Linux 4.15.0-54-generic xhci-hcd
                physical id: 1
                bus info: usb@2
                logical name: usb2
                version: 4.15
                capabilities: usb-3.00
                configuration: driver=hub slots=10 speed=5000Mbit/s
        *-communication
             description: Communication controller
             product: 100 Series/C230 Series Chipset Family MEI Controller #1
             vendor: Intel Corporation
             physical id: 16
             bus info: pci@0000:00:16.0
             version: 31
             width: 64 bits
             clock: 33MHz
             capabilities: pm msi bus_master cap_list
             configuration: driver=mei_me latency=0
             resources: irq:131 memory:df22d000-df22dfff
        *-storage
             description: SATA controller
             product: Q170/Q150/B150/H170/H110/Z170/CM236 Chipset SATA Controller [AHCI Mode]
             vendor: Intel Corporation
             physical id: 17
             bus info: pci@0000:00:17.0
             version: 31
             width: 32 bits
             clock: 66MHz
             capabilities: storage msi pm ahci_1.0 bus_master cap_list
             configuration: driver=ahci latency=0
             resources: irq:128 memory:df228000-df229fff memory:df22c000-df22c0ff ioport:f050(size=8) ioport:f040(size=4) ioport:f020(size=32) memory:df22b000-df22b7ff
        *-pci:1
             description: PCI bridge
             product: 100 Series/C230 Series Chipset Family PCI Express Root Port #17
             vendor: Intel Corporation
             physical id: 1b
             bus info: pci@0000:00:1b.0
             version: f1
             width: 32 bits
             clock: 33MHz
             capabilities: pci pciexpress msi pm normal_decode bus_master cap_list
             configuration: driver=pcieport
             resources: irq:122
        *-pci:2
             description: PCI bridge
             product: 100 Series/C230 Series Chipset Family PCI Express Root Port #1
             vendor: Intel Corporation
             physical id: 1c
             bus info: pci@0000:00:1c.0
             version: f1
             width: 32 bits
             clock: 33MHz
             capabilities: pci pciexpress msi pm normal_decode bus_master cap_list
             configuration: driver=pcieport
             resources: irq:123
        *-pci:3
             description: PCI bridge
             product: 100 Series/C230 Series Chipset Family PCI Express Root Port #3
             vendor: Intel Corporation
             physical id: 1c.2
             bus info: pci@0000:00:1c.2
             version: f1
             width: 32 bits
             clock: 33MHz
             capabilities: pci pciexpress msi pm normal_decode bus_master cap_list
             configuration: driver=pcieport
             resources: irq:124
           *-pci
                description: PCI bridge
                product: ASM1083/1085 PCIe to PCI Bridge
                vendor: ASMedia Technology Inc.
                physical id: 0
                bus info: pci@0000:04:00.0
                version: 04
                width: 64 bits
                clock: 33MHz
                capabilities: pci msi pm pciexpress normal_decode bus_master cap_list
                resources: iomemory:202001f10-202001f0f
        *-pci:4
             description: PCI bridge
             product: 100 Series/C230 Series Chipset Family PCI Express Root Port #4
             vendor: Intel Corporation
             physical id: 1c.3
             bus info: pci@0000:00:1c.3
             version: f1
             width: 32 bits
             clock: 33MHz
             capabilities: pci pciexpress msi pm normal_decode bus_master cap_list
             configuration: driver=pcieport
             resources: irq:125 ioport:d000(size=4096) memory:df100000-df1fffff
           *-network
                description: Ethernet interface
                product: RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller
                vendor: Realtek Semiconductor Co., Ltd.
                physical id: 0
                bus info: pci@0000:06:00.0
                logical name: enp6s0
                version: 15
                serial: f8:32:e4:ba:59:0c
                size: 1Gbit/s
                capacity: 1Gbit/s
                width: 64 bits
                clock: 33MHz
                capabilities: pm msi pciexpress msix bus_master cap_list ethernet physical tp mii 10bt 10bt-fd 100bt 100bt-fd 1000bt 1000bt-fd autonegotiation
                configuration: autonegotiation=on broadcast=yes driver=r8169 driverversion=2.3LK-NAPI duplex=full firmware=rtl8168h-2_0.0.2 02/26/15 ip=24.56.241.97 latency=0 link=yes multicast=yes port=MII speed=1Gbit/s
                resources: irq:19 ioport:d000(size=256) memory:df104000-df104fff memory:df100000-df103fff
        *-pci:5
             description: PCI bridge
             product: 100 Series/C230 Series Chipset Family PCI Express Root Port #9
             vendor: Intel Corporation
             physical id: 1d
             bus info: pci@0000:00:1d.0
             version: f1
             width: 32 bits
             clock: 33MHz
             capabilities: pci pciexpress msi pm normal_decode bus_master cap_list
             configuration: driver=pcieport
             resources: irq:126 ioport:2000(size=4096) memory:a8800000-a89fffff ioport:a8a00000(size=2097152)
        *-isa
             description: ISA bridge
             product: Z170 Chipset LPC/eSPI Controller
             vendor: Intel Corporation
             physical id: 1f
             bus info: pci@0000:00:1f.0
             version: 31
             width: 32 bits
             clock: 33MHz
             capabilities: isa bus_master
             configuration: latency=0
        *-memory UNCLAIMED
             description: Memory controller
             product: 100 Series/C230 Series Chipset Family Power Management Controller
             vendor: Intel Corporation
             physical id: 1f.2
             bus info: pci@0000:00:1f.2
             version: 31
             width: 32 bits
             clock: 33MHz (30.3ns)
             capabilities: bus_master
             configuration: latency=0
             resources: memory:df224000-df227fff
        *-multimedia
             description: Audio device
             product: 100 Series/C230 Series Chipset Family HD Audio Controller
             vendor: Intel Corporation
             physical id: 1f.3
             bus info: pci@0000:00:1f.3
             version: 31
             width: 64 bits
             clock: 33MHz
             capabilities: pm msi bus_master cap_list
             configuration: driver=snd_hda_intel latency=32
             resources: irq:132 memory:df220000-df223fff memory:df200000-df20ffff
        *-serial UNCLAIMED
             description: SMBus
             product: 100 Series/C230 Series Chipset Family SMBus
             vendor: Intel Corporation
             physical id: 1f.4
             bus info: pci@0000:00:1f.4
             version: 31
             width: 64 bits
             clock: 33MHz
             configuration: latency=0
             resources: memory:df22a000-df22a0ff ioport:f000(size=32)
     *-scsi:0
          physical id: 1
          logical name: scsi2
          capabilities: emulated
        *-disk
             description: ATA Disk
             product: Samsung SSD 860
             physical id: 0.0.0
             bus info: scsi@2:0.0.0
             logical name: /dev/sda
             version: 2B6Q
             serial: S3Z1NB0M250491B
             size: 465GiB (500GB)
             capabilities: partitioned partitioned:dos
             configuration: ansiversion=5 logicalsectorsize=512 sectorsize=512 signature=08c61b41
           *-volume
                description: EXT4 volume
                vendor: Linux
                physical id: 1
                bus info: scsi@2:0.0.0,1
                logical name: /dev/sda1
                logical name: /
                version: 1.0
                serial: 3fd47981-e0eb-4c9f-b43e-da5286bbabbb
                size: 465GiB
                capacity: 465GiB
                capabilities: primary bootable journaled extended_attributes large_files huge_files dir_nlink 64bit extents ext4 ext2 initialized
                configuration: created=2019-05-07 23:26:38 filesystem=ext4 lastmountpoint=/ modified=2019-07-09 01:09:22 mount.fstype=ext4 mount.options=rw,relatime,errors=remount-ro,data=ordered mounted=2019-07-07 22:19:17 state=mounted
     *-scsi:1
          physical id: 2
          logical name: scsi5
          capabilities: emulated
        *-cdrom
             description: DVD-RAM writer
             product: DRW-24F1ST   c
             vendor: ASUS
             physical id: 0.0.0
             bus info: scsi@5:0.0.0
             logical name: /dev/cdrom
             logical name: /dev/cdrw
             logical name: /dev/dvd
             logical name: /dev/dvdrw
             logical name: /dev/sr0
             version: 1.00
             capabilities: removable audio cd-r cd-rw dvd dvd-r dvd-ram
             configuration: ansiversion=5 status=nodisc
  *-power UNCLAIMED
       description: To Be Filled By O.E.M.
       product: To Be Filled By O.E.M.
       vendor: To Be Filled By O.E.M.
       physical id: 1
       version: To Be Filled By O.E.M.
       serial: To Be Filled By O.E.M.
       capacity: 32768mWh
george@george-System-Product-Name:~$ 
Yes, it was a fresh installation. Thank you very much for your help Kaitain!