Ethernet Connection nor working (SOLVED)

[Abhijit Paul]

The output for

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 inxi -Fxz 

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System:
  Kernel: 5.4.0-80-generic x86_64 bits: 64 compiler: gcc v: 9.3.0 
  Desktop: Cinnamon 4.8.6 Distro: Linux Mint 20.1 Ulyssa 
  base: Ubuntu 20.04 focal 
Machine:
  Type: Desktop Mobo: Gigabyte model: H81M-S2PV v: x.x serial: <filter> 
  BIOS: American Megatrends v: F1 date: 10/13/2014 
CPU:
  Topology: Dual Core model: Intel Core i3-4150 bits: 64 type: MT MCP 
  arch: Haswell rev: 3 L2 cache: 3072 KiB 
  flags: avx avx2 lm nx pae sse sse2 sse3 sse4_1 sse4_2 ssse3 vmx 
  bogomips: 27935 
  Speed: 836 MHz min/max: 800/3500 MHz Core speeds (MHz): 1: 798 2: 798 
  3: 798 4: 799 
Graphics:
  Device-1: Intel 4th Generation Core Processor Family Integrated Graphics 
  vendor: Gigabyte driver: i915 v: kernel bus ID: 00:02.0 
  Display: x11 server: X.Org 1.20.9 driver: modesetting unloaded: fbdev,vesa 
  resolution: 1366x768~60Hz 
  OpenGL: renderer: Mesa DRI Intel HD Graphics 4400 (HSW GT2) 
  v: 4.5 Mesa 20.2.6 direct render: Yes 
Audio:
  Device-1: Intel Xeon E3-1200 v3/4th Gen Core Processor HD Audio 
  driver: snd_hda_intel v: kernel bus ID: 00:03.0 
  Device-2: Intel 8 Series/C220 Series High Definition Audio 
  vendor: Gigabyte driver: snd_hda_intel v: kernel bus ID: 00:1b.0 
  Sound Server: ALSA v: k5.4.0-80-generic 
Network:
  Device-1: Realtek RTL8111/8168/8411 PCI Express Gigabit Ethernet 
  vendor: Gigabyte driver: r8169 v: kernel port: e000 bus ID: 02:00.0 
  IF: enp2s0 state: up speed: 10 Mbps duplex: half mac: <filter> 
  Device-2: Realtek USB Mouse type: USB driver: rtl8188fu bus ID: 3-7.2:123 
  IF: wlx002e2d505371 state: up mac: <filter> 
Drives:
  Local Storage: total: 1.13 TiB used: 31.87 GiB (2.8%) 
  ID-1: /dev/sda vendor: Toshiba model: DT01ACA100 size: 931.51 GiB 
  temp: 35 C 
  ID-2: /dev/sdb vendor: Western Digital model: WD SSD 240GB 
  size: 223.57 GiB temp: 40 C 
Partition:
  ID-1: / size: 218.57 GiB used: 31.87 GiB (14.6%) fs: ext4 dev: /dev/sdb5 
Sensors:
  System Temperatures: cpu: 36.0 C mobo: N/A 
  Fan Speeds (RPM): N/A 
Info:
  Processes: 218 Uptime: 19m Memory: 3.75 GiB used: 1.51 GiB (40.2%) 
  Init: systemd runlevel: 5 Compilers: gcc: 9.3.0 Shell: bash v: 5.0.17 
  inxi: 3.0.38 

The output for

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 rfkill list all 

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13: phy13: Wireless LAN
	Soft blocked: no
	Hard blocked: no

(I am currently using my old wifi adapter to browse forum as ethernet connection is not working.) As you can see in this image, the Ethernet icon on top right shows that ethernet is connected but I can't access the internet. (The router is working fine because I am using that wifi to post now.) Ethernet connection did work last night but now its not working. Things I have tried:

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1) sudo systemctl restart network-manager.service 
2) sudo apt install git dkms
git clone https://github.com/cilynx/rtl88x2bu.git
sudo dkms add ./rtl88x2bu
sudo dkms install rtl88x2bu/5.6.1 

[sleeper12]

Did you try reinserting the ethernet cable? If that's no help, restart router, modem & machine.

[Abhijit Paul]

Its working! I plugged in and out the Ethernet cable and its working fine now. Thanks a lot.

[sleeper12]

Ok good, sometimes the easy thing works.