ethernet doesn't connect on boot

[lammergeir]

I've searched the forums, but no answers.
When I boot up, ethernet sometimes connects, but mostly doesn't.
It connects if I unplug the cable and re-insert at either my pc or modem.
This has been an on-going problem with Mint 18.
I reverted to Kernel 4.4 because I had a very fast mouse. That is now behaving.
Grateful for any suggestions.
Many thanks,

inxi -Fxz gives:
terry@terry-G41-M7 ~ $ inxi -Fxz

System: Host: terry-G41-M7 Kernel: 4.4.0-109-generic x86_64 (64 bit gcc: 5.4.0)
Desktop: Cinnamon 3.4.6 (Gtk 3.18.9-1ubuntu3.3)
Distro: Linux Mint 18.2 Sonya
Machine: Mobo: TAR model: G41-M7 v: ' '
Bios: American Megatrends v: 080015 date: 09/23/2009
CPU: Dual core Pentium E5500 (-MCP-) cache: 2048 KB
flags: (lm nx sse sse2 sse3 ssse3 vmx) bmips: 11199
clock speeds: max: 2803 MHz 1: 1203 MHz 2: 2803 MHz
Graphics: Card: NVIDIA G73 [GeForce 7300 GT] bus-ID: 01:00.0
Display Server: X.Org 1.18.4 drivers: nvidia (unloaded: fbdev,vesa,nouveau)
Resolution: 1280x1024@75.02hz
GLX Renderer: GeForce 7300 GT/PCIe/SSE2
GLX Version: 2.1.2 NVIDIA 304.135 Direct Rendering: Yes
Audio: Card Intel NM10/ICH7 Family High Definition Audio Controller
driver: snd_hda_intel bus-ID: 00:1b.0
Sound: Advanced Linux Sound Architecture v: k4.4.0-109-generic
Network: Card-1: Realtek RTL8101/2/6E PCI Express Fast/Gigabit Ethernet controller
driver: r8169 v: 2.3LK-NAPI port: d800 bus-ID: 03:00.0
IF: enp3s0 state: up speed: 100 Mbps duplex: full mac: <filter>
Card-2: Realtek RTL8188EUS 802.11n Wireless Network Adapter
driver: r8188eu v: v4.1.4_6773.20130222 usb-ID: 001-005
IF: wlx60e3271dd611 state: N/A mac: N/A
Drives: HDD Total Size: 1320.3GB (63.4% used)
ID-1: /dev/sda model: ST3320418AS size: 320.1GB
ID-2: /dev/sdb model: ST1000DM010 size: 1000.2GB
Partition: ID-1: / size: 290G used: 9.7G (4%) fs: ext4 dev: /dev/sda5
ID-2: /home size: 917G used: 767G (89%) fs: ext4 dev: /dev/sdb1
ID-3: swap-1 size: 4.07GB used: 0.00GB (0%) fs: swap dev: /dev/sda1
RAID: No RAID devices: /proc/mdstat, md_mod kernel module present
Sensors: System Temperatures: cpu: 34.0C mobo: N/A gpu: 0.0:53C
Fan Speeds (in rpm): cpu: N/A
Info: Processes: 215 Uptime: 15 min Memory: 1995.8/3951.1MB
Init: systemd runlevel: 5 Gcc sys: 5.4.0
Client: Shell (bash 4.3.481) inxi: 2.2.35

[Ozo]

I've searched the forums, but no answers.
When I boot up, ethernet sometimes connects, but mostly doesn't.

Network: Card-1: Realtek RTL8101/2/6E PCI Express Fast/Gigabit Ethernet controller
driver: r8169 v: 2.3LK-NAPI port: d800 bus-ID: 03:00.0
IF: enp3s0 state: up speed: 100 Mbps duplex: full mac: <filter>
Card-2: Realtek RTL8188EUS 802.11n Wireless Network Adapter
driver: r8188eu v: v4.1.4_6773.20130222 usb-ID: 001-005
IF: wlx60e3271dd611 state: N/A mac: N/A

I am no expert but first thing I would do is load the Realtek drivers. Does Driver Manager have any pertinent details? Oops, I guess 18.2 has no "Driver Manager".

[lammergeir]

I've loaded realtek drivers. Will try again

[lammergeir]

Solution: purchased an Edimax EU-4208 usb ethernet adaptor. Clearly realtek drivers not compatible with ubuntu.