Public bug reported:
I was evaluating the newly released Xubuntu 20.04.2 LTS by creating a
LiveUSB from the ISO.
All I did was to connect to wifi and browse internet using Firefox.
After two days of occasional usage, I found that wifi adapter has
disappeared from NetworkManager (and output of iwconfig as well).
Attached the relevant portions of dmesg output.
Output of 'lsb_release -rd':
-START-
xubuntu@xubuntu:~$ lsb_release -rd
Description: Ubuntu 20.04.2 LTS
Release: 20.04
--END--
ProblemType: Bug
DistroRelease: Ubuntu 20.04
Package: linux-modules-extra-5.8.0-41-generic 5.8.0-41.46~20.04.1
ProcVersionSignature: Ubuntu 5.8.0-41.46~20.04.1-generic 5.8.18
Uname: Linux 5.8.0-41-generic x86_64
ApportVersion: 2.20.11-0ubuntu27.16
Architecture: amd64
CasperMD5CheckResult: pass
CasperVersion: 1.445.1
CurrentDesktop: XFCE
Date: Wed Feb 17 03:06:47 2021
LiveMediaBuild: Xubuntu 20.04.2 LTS "Focal Fossa" - Release amd64 (20210204)
ProcEnviron:
TERM=xterm-256color
PATH=(custom, no user)
XDG_RUNTIME_DIR=<set>
LANG=C.UTF-8
SHELL=/bin/bash
SourcePackage: linux-hwe-5.8
UpgradeStatus: No upgrade log present (probably fresh install)
** Affects: ubuntu
Importance: Undecided
Status: New
** Tags: amd64 apport-bug focal
** Attachment added: "Relevant portion of dmesg output showing FW error
messages and stack trace from mwifiex_pcie"
https://bugs.launchpad.net/bugs/1915893/+attachment/5464386/+files/relevant-portios-of-dmesg.txt
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https://bugs.launchpad.net/bugs/1915893
Title:
Surface Book 2 - wifi adapter disappears after a couple of days
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