internet not working in ubuntu 20.04

Question

I recently installed nvidia-cuda-toolkit and after the reboot, my internet is not working.

The Network tab in settings only shows VPN. (Previously my LAN and wifi settings were shown here)

Searching for Wifi in settings shows No Wi-Fi Adapter Found

ifconfig only shows lo and not wlan0 nor eth0

sudo lshw -C network shows that both Ethernet Controller and Network Controller is UNCLAIMED

Ive tried installing firmware-b43-installer_019-4_all.deb which required b43-fwcutter_019-4_amd64.deb but this tries to download broadcom-wl-5.100.148.tar

Both my wifi and ethernet adapters are of Realtek.

I've tried using usb tethering from my phone but it's not being detected either.

I've windows installed on the same system and booting to windows, everything is working fine.

Please help. I'm typing this from my phone as I have absolutely no way of connecting to the internet from my ubuntu

enter image description here

What are the Realtek / Broadcom chips in your computer? Please edit your question and add all the new information. Also search this site for the chip number. — user68186, Mar 23 '21 at 15:32
@user68186 this did not work.. my /etc/netplan/01-network-manager-all.yaml already had the content as answered in the post. my kernel version is 5.8.0-45-generic. Very frustrating.. — Nischit Pradhan, Mar 23 '21 at 16:33
Does this answer your question? No Wi-Fi settings or connection after switching to NVIDIA graphics driver — user68186, Mar 25 '21 at 02:37
@user68186 Thanks,, had came across this post yesterday and it helped me.. I've posted the same post in the answer — Nischit Pradhan, Mar 25 '21 at 06:11

score 0 · Answer 1 · answered Mar 24 '21 at 04:51

0

This post had the same problem as mine.

I downloaded the extra drivers from my phone and installed it and after a reboot, its working now.

answered Mar 24 '21 at 04:51

Nischit Pradhan

101

internet not working in ubuntu 20.04

1 Answers1