Public bug reported:

After normal update (apt get upgrade), Wifi is not working any more.
The faulty package is: linux-image-5.8.0-36-generic

$ lsb_release -rd
Description:    Ubuntu 20.04.1 LTS
Release:        20.04

Reverting the kernel during boot, wifi is working again with:

$ uname -a
Linux acer 5.4.0-59-generic #65-Ubuntu SMP Thu Dec 10 12:01:51 UTC 2020 x86_64 
x86_64 x86_64 GNU/Linux

but no more with:

$ uname -a
Linux acer 5.8.0-36-generic #40~20.04.1-Ubuntu SMP Wed Jan 6 10:15:55 UTC 2021 
x86_64 x86_64 x86_64 GNU/Linux

** Affects: linux (Ubuntu)
     Importance: Undecided
         Status: Incomplete


** Tags: focal

** Attachment added: "cat /proc/version_signature > version.log"
   
https://bugs.launchpad.net/bugs/1910855/+attachment/5451240/+files/version.log

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https://bugs.launchpad.net/bugs/1910855

Title:
  [Acer Extensa 5220] No wifi after update

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