WIFI card is not detected

[Randika Navagamuwa]

When I turn on the laptop WIFI is not working. I have to reboot several times or restart the network-manager service to outcome this problem.

ProblemType: Bug
DistroRelease: Ubuntu 16.04
Package: network-manager 1.1.93-0ubuntu4
Uname: Linux 4.5.0-040500-generic x86_64
NonfreeKernelModules: nvidia_uvm nvidia_modeset nvidia
ApportVersion: 2.20.1-0ubuntu2
Architecture: amd64
CurrentDesktop: Unity
Date: Fri May 13 20:21:27 2016
IfupdownConfig:
 # interfaces(5) file used by ifup(8) and ifdown(8)
 auto lo
 iface lo inet loopback
InstallationDate: Installed on 2016-05-04 (8 days ago)
InstallationMedia: Ubuntu 16.04 LTS "Xenial Xerus" - Release amd64 (20160420.1)
IpRoute:
 default via 192.168.1.1 dev wlp2s0 proto static metric 600
 169.254.0.0/16 dev docker0 scope link metric 1000 linkdown
 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 192.168.1.4 metric 600
NetworkManager.state:
 [main]
 NetworkingEnabled=true
 WirelessEnabled=true
 WWANEnabled=true
SourcePackage: network-manager
UpgradeStatus: No upgrade log present (probably fresh install)
nmcli-dev:
 DEVICE TYPE STATE DBUS-PATH CONNECTION CON-UUID CON-PATH
 docker0 bridge connected /org/freedesktop/NetworkManager/Devices/2 docker0 0f5d1f9c-f33e-40d6-a92d-2c036d81dd74 /org/freedesktop/NetworkManager/ActiveConnection/0
 wlp2s0 wifi connected /org/freedesktop/NetworkManager/Devices/1 Navagamuwa Residence 07dd3be0-b55d-4dbd-ab13-49caddaaa789 /org/freedesktop/NetworkManager/ActiveConnection/1
 lo loopback unmanaged /org/freedesktop/NetworkManager/Devices/0 -- -- --
nmcli-nm: Error: command ['nmcli', '-f', 'all', 'nm'] failed with exit code 2: Error: Object 'nm' is unknown, try 'nmcli help'.

[Sebastien Bacher (seb128)]

Thank you for your bug report. Does it get missing on boot or only after suspend/resume? Could you try if the update https://launchpad.net/ubuntu/+source/network-manager/1.2.0-0ubuntu0.16.04.2 improves things?

[Randika Navagamuwa (randikanavagamuwa)]

I was only missing after booting. I think problem was with the kernal version i was using. I was using http://kernel.ubuntu.com/~kernel-ppa/mainline/v4.5-wily/ that time but now using 4.0.22-generic and no problem so far.

[Launchpad Janitor (janitor)]

[Expired for network-manager (Ubuntu) because there has been no activity for 60 days.]