After the laptop has resumed from suspend, there are no Wi-Fi networks listed in the network manager applet. The connection still works but the applet shows the Ethernet connection icon.
Steps to reproduce:
1) close the laptop lid to enter suspend (or click "suspend" in the system menu in the upper panel)
2) re-open the laptop lid, resuming the laptop from suspend, unlock the screen
3) check the network manager applet, no Wi-Fi networks are listed, disabling and re-enabling Wi-Fi doesn't help
This is a problem because it isn't possible to connect to another Wi-Fi network.
The problem disappears if i run:
sudo systemctl restart network-manager.service
as described here: https://askubuntu.com/a/761220, however, the systemd unit file solution suggested in the same answer doesn't work, probably due to a timing issue (the command is run too early and the Wi-Fi card is not ready).
ProblemType: Bug
DistroRelease: Ubuntu 16.04
Package: network-manager 1.2.6-0ubuntu0.16.04.2
ProcVersionSignature: Ubuntu 4.13.0-32.35~16.04.1-generic 4.13.13
Uname: Linux 4.13.0-32-generic x86_64
ApportVersion: 2.20.1-0ubuntu2.15
Architecture: amd64
CurrentDesktop: Unity
Date: Sun Feb 4 22:55:37 2018
IfupdownConfig:
# interfaces(5) file used by ifup(8) and ifdown(8)
auto lo
iface lo inet loopback
InstallationDate: Installed on 2018-01-30 (4 days ago)
InstallationMedia: Ubuntu 16.04.3 LTS "Xenial Xerus" - Release amd64 (20170801)
IpRoute:
default via 192.168.1.254 dev wlp2s0 proto static metric 600
169.254.0.0/16 dev wlp2s0 scope link metric 1000
172.17.0.0/16 dev docker0 proto kernel scope link src 172.17.0.1 linkdown
192.168.1.0/24 dev wlp2s0 proto kernel scope link src 192.168.1.145 metric 600
192.168.122.0/24 dev virbr0 proto kernel scope link src 192.168.122.1 linkdown
NetworkManager.state:
[main]
NetworkingEnabled=true
WirelessEnabled=true
WWANEnabled=true
ProcEnviron:
LANGUAGE=it
PATH=(custom, no user)
XDG_RUNTIME_DIR=<set>
LANG=it_IT.UTF-8
SHELL=/bin/bash
SourcePackage: network-manager
UpgradeStatus: No upgrade log present (probably fresh install)
nmcli-nm:
RUNNING VERSION STATE STARTUP CONNECTIVITY NETWORKING WIFI-HW WIFI WWAN-HW WWAN
running 1.2.6 connected started full enabled enabled enabled enabled enabled
---
ApportVersion: 2.20.1-0ubuntu2.15
Architecture: amd64
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/controlC0: dario 2676 F.... pulseaudio
CurrentDesktop: Unity
DistroRelease: Ubuntu 16.04
HibernationDevice: RESUME=UUID=263a0d14-a71e-4489-b092-4e5dcd6faa3b
IfupdownConfig:
# interfaces(5) file used by ifup(8) and ifdown(8)
auto lo
iface lo inet loopback
InstallationDate: Installed on 2018-01-30 (6 days ago)
InstallationMedia: Ubuntu 16.04.3 LTS "Xenial Xerus" - Release amd64 (20170801)
IpRoute:
default via 192.168.1.254 dev wlp2s0 proto static metric 600
169.254.0.0/16 dev wlp2s0 scope link metric 1000
172.17.0.0/16 dev docker0 proto kernel scope link src 172.17.0.1 linkdown
192.168.1.0/24 dev wlp2s0 proto kernel scope link src 192.168.1.145 metric 600
192.168.122.0/24 dev virbr0 proto kernel scope link src 192.168.122.1 linkdown
MachineType: Dell Inc. Inspiron 3521
NetworkManager.state:
[main]
NetworkingEnabled=true
WirelessEnabled=true
WWANEnabled=true
Package: network-manager 1.2.6-0ubuntu0.16.04.2
PackageArchitecture: amd64
ProcFB: 0 inteldrmfb
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.13.0-32-generic.efi.signed root=UUID=4792cb89-7551-470a-b296-6f14f2e929b8 ro quiet splash vt.handoff=7
ProcVersionSignature: Ubuntu 4.13.0-32.35~16.04.1-generic 4.13.13
RelatedPackageVersions:
linux-restricted-modules-4.13.0-32-generic N/A
linux-backports-modules-4.13.0-32-generic N/A
linux-firmware 1.157.15
Tags: xenial xenial
Uname: Linux 4.13.0-32-generic x86_64
UpgradeStatus: No upgrade log present (probably fresh install)
UserGroups: adm cdrom dip docker kvm libvirtd lpadmin plugdev sambashare sudo
_MarkForUpload: True
dmi.bios.date: 05/20/2013
dmi.bios.vendor: Dell Inc.
dmi.bios.version: A08
dmi.board.name: 0G9PWP
dmi.board.vendor: Dell Inc.
dmi.board.version: A00
dmi.chassis.type: 8
dmi.chassis.vendor: Dell Inc.
dmi.chassis.version: A08
dmi.modalias: dmi:bvnDellInc.:bvrA08:bd05/20/2013:svnDellInc.:pnInspiron3521:pvrA08:rvnDellInc.:rn0G9PWP:rvrA00:cvnDellInc.:ct8:cvrA08:
dmi.product.family: 103C_5335KV
dmi.product.name: Inspiron 3521
dmi.product.version: A08
dmi.sys.vendor: Dell Inc.
nmcli-nm:
RUNNING VERSION STATE STARTUP CONNECTIVITY NETWORKING WIFI-HW WIFI WWAN-HW WWAN
running 1.2.6 connected started full enabled enabled enabled enabled enabled
This bug is missing log files that will aid in diagnosing the problem. While running an Ubuntu kernel (not a mainline or third-party kernel) please enter the following command in a terminal window:
apport-collect 1747307
and then change the status of the bug to 'Confirmed'.
If, due to the nature of the issue you have encountered, you are unable to run this command, please add a comment stating that fact and change the bug status to 'Confirmed'.
This change has been made by an automated script, maintained by the Ubuntu Kernel Team.