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No wifi adapter found and kernel problem

tn flag

i have problem. Today i turned on my laptop, and i went to my browser, but i didn't have internet connection. so i went to wifi settings and i saw message, saying No wifi adapter found. And i saw a notification, that says: An error occurred, please run package manger from the right click manu or apt-get in terminal to see what is wrong. The error message was:'Unknown Error: '<Class 'apt_pkg.Error'>' (E:The package linux-modules-extra-5.11.0-40-generic needs to be reinstalled,but I cant find an archive for it.)'. This usually means that your installed packages have unmet dependencies.

So i googled it, and i saw a video, that said that i have to connect to the internet either by Ethernet ot usb, so that i can run a few lines in terminal. Nothing worked. Please help me, because i need my computer, and i dont have time to reinstall ubuntu. Thank you in advance.

Pilot6 avatar
cn flag
Boot with a previous kernel using grub menu. Probably a kernel upgrade was interrupted.
tn flag
I am sorry, how do i do that?
Pilot6 avatar
cn flag
Use google and find how to boot with a previous kernel using grub
tn flag
It worked! Thank you so so much!
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