Public bug reported:
The WiFi connection is aborted an the nm_applet shows the window to
enter the WLAN password. The password is pre-filled an you can click the
ok button to reconnect.
The error occurs sometimes very often (e.g. 10 times/minute) or seldom
(only one per day).
The problem occurs in Xubuntu 20.04.1 LTS since update to kernel 5.4.0-56
(5.4.0-58 too).
With other Xubuntu versions (e.g. 18.04 LTS) or kernel 5.4.0-54 or earlier the
problem did not appear. Other OS (eg W10 or div Android) do not see this
problem too.
Additional asked information:
1) lsb_release -rd
Description: Ubuntu 20.04.1 LTS
Release: 20.04
2) apt-cache policy network-manager
network-manager:
Installiert: 1.22.10-1ubuntu2.2
Installationskandidat: 1.22.10-1ubuntu2.2
Versionstabelle:
*** 1.22.10-1ubuntu2.2 500
500 http://de.archive.ubuntu.com/ubuntu focal-updates/main amd64
Packages
100 /var/lib/dpkg/status
1.22.10-1ubuntu1 500
500 http://de.archive.ubuntu.com/ubuntu focal/main amd64 Packages
3) What you expected to happen: WLAN witch in the background with no net abort.
4) What happened instead: Network abort, window-popup with focus to password,
interrupted work.
All hardware that I know show the problem on laptops with Intel WLAN
devices.
In /var/log/syslog you can find the error beginning with a
"wpa_supplicant[xxx]: l2_packet_send - sendto: No buffer space available"
entry. Some lines later you see the entry "asking for a new key".
The problem can be reproduced by forcing a WLAN reconnect. This happens, when
the router changes the channel or when the wifi signal strength tends to modify
the way from the computer to the router (direct connect or via a repeater or
changing the repeater e.g. in a Mesh). This behaviour ca be seen in the 2,4GHz
and in the 5GHz net.
In the sent .apport file you see the switch from repeater (2c:91:..) to router
(44:4e:..) at "Dec 29 14:18" as the repeater is forced to reboot to produce the
error.
For further information you can see the discussion at
https://answers.launchpad.net/ubuntu/+question/694566
ProblemType: Bug
DistroRelease: Ubuntu 20.04
Package: network-manager-gnome 1.8.24-1ubuntu3
ProcVersionSignature: Ubuntu 5.4.0-58.64-generic 5.4.73
Uname: Linux 5.4.0-58-generic x86_64
ApportVersion: 2.20.11-0ubuntu27.14
Architecture: amd64
CasperMD5CheckResult: skip
CurrentDesktop: XFCE
Date: Sun Dec 20 14:19:27 2020
ExecutablePath: /usr/bin/nm-applet
IfupdownConfig:
# interfaces(5) file used by ifup(8) and ifdown(8)
auto lo
iface lo inet loopback
InstallationDate: Installed on 2019-12-28 (357 days ago)
InstallationMedia: Xubuntu 18.04.3 LTS "Bionic Beaver" - Release amd64
(20190805)
IpRoute:
default via 192.168.146.1 dev wlp3s0 proto dhcp metric 600 linkdown
169.254.0.0/16 dev wlp3s0 scope link metric 1000 linkdown
192.168.146.0/24 dev wlp3s0 proto kernel scope link src 192.168.146.113 metric
600 linkdown
ProcEnviron:
LANGUAGE=de_DE
PATH=(custom, user)
XDG_RUNTIME_DIR=<set>
LANG=de_DE.UTF-8
SHELL=/bin/bash
SourcePackage: network-manager-applet
UpgradeStatus: Upgraded to focal on 2020-10-28 (52 days ago)
nmcli-nm:
RUNNING VERSION STATE STARTUP CONNECTIVITY NETWORKING WIFI-HW WIFI
WWAN-HW WWAN
running 1.22.10 connecting started none enabled enabled
enabled enabled disabled
** Affects: network-manager-applet (Ubuntu)
Importance: Undecided
Status: New
** Tags: amd64 apport-bug focal
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https://bugs.launchpad.net/bugs/1908823
Title:
sporadic WiFi aborts with opening a window requesting to enter the
WiFi password that is pre-filled
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