[SOLVED] Installing dualboot Ubuntu Mate on SSD. Seek guidance to best practice.

My computer is Dell XPS 8700 desktop i7-4790 16GB RAM, 1T HDD

I am about to install UM 18.04 (from USB) onto an 2 year old new Toshiba 120Gb SSD (Q300 SATA III - 3 bit per cell) as a dual boot with Win 10 (UEFI) on the HDD. It has been two years since I last did an UM install, and two things have happened: (1) my memory of the experience has dimmed, and (2) technology has moved along smartly.

At this point I am reaching out to try to find those who can tell me HOW to do this (as opposed to WHAT needs to be done).

To recap, Win 10 seems to be properly reinstalled on the 1T HDD (UEFI), with additional partitions for Win data (NTFS), and linux data (not yet formatted)

I have turned off Fast Startup (in Windows)

BIOS setup shows that the computer is in UEFI mode
I have turned off Secure Boot

Here are notes I made from within BIOS setup which may/may not be important (If anything needs changing, please advise)
All these are enabled:
Intel Hyper-Threading Technology
Intel SpeedStep Tech.
CPU XD Support
Mullti Core Support
Intel Turbo Boot Tech

This one is disabled:
Limit CPU Value

SATA mode is AHCI
Boot mode UEFI

Does anyone see anything above that needs to be addressed before starting the install, or NOT SEE something that needs addressing? I make this post because it is so much more efficient to flip all the right switches BEFORE the install.

Your guidance greatly appreciated.

The best source of information is the Ubuntu documentation at the link below.

https://help.ubuntu.com/community/UEFI

I decided to go ahead with the install (just a few minutes before Yancek kindly replied) and hope for the best.

It booted OK from the USB drive, and it seems to be installed OK.

However it is offline. I have poked, pulled, and changed to try to get it online, but no cigar.

Ubuntu MATE 18.04.1

from the new install:

Code:
output from ifconfig:
enp3s0: flags=4099<UP,BROADCAST,MULTICAST> mtu 1500
ether XY:AB:XY:AB:XY:AB txqueuelen 1000 (Ethernet)
RX packets 0 bytes 0 (0.0 B)
RX errors dropped 0 overruns 0 frame 0
TX packets 0 bytes 0 (0.0 B)
TX errors dropped 0 overruns 0 carrier 0 collisions 0

lo: flags=73<UP,LOOPBACK, RUNNING: mtu 65536
inet 127.0.0.1 netmask 255.0.0.0
inet6 ::1 prefixlen 128 scopeid 0x10<host>
loop txqueuelen 1000 (Local Loopback)
RX packets 52355 bytes 3197498 (3.1 MB)
RX errors dropped 0 overruns 0 frame 0
TX packets 52355 bytes 3197498 (3.1 MB)
TX errors dropped 0 overruns 0 carrier 0 collisions 0

Code:
route -n
Kernel IP routing table
Destination Gateway Genmask Flags Metric Ref Use Iface

Code:
sudo lshw -C network

*-network
description: Ethernet interface
product: RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller
vendor: Realtek Semiconductor Co., Ltd.
physical id: 0
bus info: pci@0000:03:00.0
logical name: enp3s0
version: 0c
serial: XY:AB:XY:AB:XY:AB
size: 10Mbit/s
capacity: 1Gbit/s
width: 64 bits
clock: 33MHz
capabilities: pm msi pciexpress msix vpd 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=half firmware=rtl8168g-2_0.0.1 02/06/13 latency=0 link=no multicast=yes port=MII speed=10Mbit/s
resources: irq:18 ioport:d000(size=256) memory:f7200000-f7200fff memory:f2100000-f2103fff
*-network
description: Network controller
product: BCM43142 802.11b/g/n
vendor: Broadcom Limited
physical id: 0
bus info: pci@0000:04:00.0
version: 01
width: 64 bits
clock: 33MHz
capabilities: pm msi pciexpress bus_master cap_list
configuration: driver=bcma-pci-bridge latency=0
resources: irq:19 memory:f7100000-f7107fff

Where is the best place to start to get a wired internet connection established? Thanks

(Dell XPS 8700 i7-4790)

"Best" way I do not know. The following (redacted) resulted from my successful fixed IP, ipv6-disabled net install of 18.04:

## /etc/netplan/01-netcfg.yaml
# This file describes the network interfaces available on your system
# For more information, see netplan(5).
network:
  version: 2
  renderer: networkd
  ethernets:
    eth0:
      addresses: [ 192.168.###.###/24 ]
      gateway4: 192.168.###.1
      nameservers:
          search: [ my.net ]
          addresses:
              - "192.168.###.1"
              - "192.168.###.###"

mrmazda, thanks for that, but at my level of (in)competence, I don't understand how to use it to solve my problem.

For everyone, it appears that there is a NIC driver mismatch and I am trying to establish WiFi to allow apt-get to find a better driver for my NIC

here is what I have tried, but have hit a wall hard!

I put a USB WiFi receiver in and restarted. No automatic connectivity (should the adapter have shown?), so I opened NetWork Connections and clicked on the "+" which opened:

Editing WiFi Connection 1 (with a lot of blank fields)

and it seems I will need some assistance in selecting the tabs and data points that need to be filled in, AND in finding the necessary information to be supplied. The two that seem to me most relevant are
WiFi tab. and
IPv4 tab

Because I do not have connectivity, I am not posting screen captures, but I assume that anyone who understands this stuff will know which of the tabs and boxes need to be filled in, and how to find the data. Or perhaps to guide on a simpler way to establish WiFi connectivity?

Your assistance is humbly requested. Thanks

For Moderator, just realized that although I originally posted this in Linux - Software, and since the focus is now connectivity I imagine that it should be in Linux - Networking, so please move it there if you think appropriate. Thanks.

Originally Posted by Odyssey1942 For Moderator, just realized that although I originally posted this in Linux - Software, and since the focus is now connectivity I imagine that it should be in Linux - Networking, so please move it there if you think appropriate. Thanks.

If you report your own post and mention the above in the report description, then a mod will take notice of it.

Thanks! Its Very useful forum for Linux issue