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I am using Ubuntu 20.04 (as second OS with Windows) and today when I switch to Ubuntu my second screen was not working. I used the solution from this thread External monitor not detected on Ubuntu 18.04 and it worked. After that something odd happened.

I am using TPlink Wifi Adapter and it is not working. When I type lsusb in terminal I can see the device (same thing for Bluetooth Stick) but I cannot connect to internet. In network options I cannot see Wifi option. USB port is working (I tried with External HDD) and everything works in Windows. I tried to connect my phone via USB and it worked but I could not share internet. I tried this USB ports have completely stopped working but it did not work. Also sound is not working and only output there is "Dummy".

I am completely stuck. I cannot connect to internet so I cannot update anything (ethernet is not an option in this case and sharing mobile internet did not work).

I have no idea to solve this problem. If anyone can give me a hint I would be so grateful.

Output of:

sudo dpkg -s linux-modules-extra-$(uname -r) | grep Status

dpkg-query: package 'linux-modules-extra-5.13.0-27-generic' is not installed and no information is available
Use dpkg --info (= dpkg-deb --info) to examine archive files.

Thank you in advance.

stumblebee
  • 3,547
Hamza Umut Karakurt
  • 1
  • Your links aren't working. Please [edit] the question and correct that or, even better, describe what you actually did. – ChanganAuto Jan 20 '22 at 15:51
  • Please edit your question to add the result of the terminal command: sudo dpkg -s linux-modules-extra-$(uname -r) | grep Status Welcome to Ask Ubuntu. – chili555 Jan 20 '22 at 15:54
  • I updated the links and the result of the command chili555 asked. Thank you. – Hamza Umut Karakurt Jan 21 '22 at 07:14
  • I believe the answer is here: https://askubuntu.com/questions/1388279/ubuntu-network-error-after-changes-additional-drivers-software-updates/1388288#1388288 – chili555 Jan 21 '22 at 14:04
  • It worked. The only thing: ' sudo apt install --reinstall linux-modules-extra-5.13.0.27-generic Reading package lists... Done Building dependency tree
    Reading state information... Done E: Unable to locate package linux-modules-extra-5.13.0.27-generic E: Couldn't find any package by glob 'linux-modules-extra-5.13.0.27-generic' ' But I can still use with previous kernel     – Hamza Umut Karakurt Jan 21 '22 at 19:02
  • Here it is:https://packages.ubuntu.com/impish/linux-modules-extra-5.13.0-27-generic Did you run sudo apt update first? – chili555 Jan 21 '22 at 20:29
  • Yes I did. After I did it twice it worked. Everything is okay now. Thank you so much, you are the best – Hamza Umut Karakurt Jan 21 '22 at 22:20
  • The answer I linked is now accepted and upvoted so I will mark your question as a duplicate. Glad it's working! – chili555 Jan 21 '22 at 22:36

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