I'm using an Ubuntu OEM image on the Dell Precision 5510. After unboxing and applying all updates (running apt-get update/upgrade multiple times), if I suspend the system, when it comes back, networking shows as "disabled". The network interfaces however are still up. Once I kill the NetworkManager process, networking comes back.
ProblemType: Bug
DistroRelease: Ubuntu 14.04
Package: network-manager 0.9.8.8-0ubuntu7.2
ProcVersionSignature: Ubuntu 3.19.0-33.38~14.04.1-generic 3.19.8-ckt7
Uname: Linux 3.19.0-33-generic x86_64
ApportVersion: 2.14.1-0ubuntu3.19
Architecture: amd64
CurrentDesktop: Unity
Date: Fri Feb 26 11:43:28 2016
DistributionChannelDescriptor:
# This is a distribution channel descriptor
# For more information see http://wiki.ubuntu.com/DistributionChannelDescriptor
canonical-oem-somerville-trusty-amd64-osp1-20150721-1
IfupdownConfig:
# interfaces(5) file used by ifup(8) and ifdown(8)
auto lo
iface lo inet loopback
InstallationDate: Installed on 2016-02-25 (1 days ago)
InstallationMedia: Ubuntu 14.04 "Trusty" - Build amd64 LIVE Binary 20150721-23:28
IpRoute:
default via 172.24.64.1 dev wlan0 proto static
172.24.64.0/19 dev wlan0 proto kernel scope link src 172.24.67.197 metric 9
NetworkManager.state:
[main]
NetworkingEnabled=true
WirelessEnabled=true
WWANEnabled=true
WimaxEnabled=true
SourcePackage: network-manager
UpgradeStatus: No upgrade log present (probably fresh install)
nmcli-con:
NAME UUID TYPE TIMESTAMP TIMESTAMP-REAL AUTOCONNECT READONLY DBUS-PATH
sfo3 aa8c189d-e8dd-429b-948f-025579dfbe33 802-11-wireless 1456515772 Fri 26 Feb 2016 11:42:52 AM PST yes no /org/freedesktop/NetworkManager/Settings/0
nmcli-dev:
DEVICE TYPE STATE DBUS-PATH
wlan0 802-11-wireless connected /org/freedesktop/NetworkManager/Devices/0
nmcli-nm:
RUNNING VERSION STATE NET-ENABLED WIFI-HARDWARE WIFI WWAN-HARDWARE WWAN
running 0.9.8.8 connected enabled enabled enabled enabled disabled
The failure was seen with WPA2 Personal with an Aruba access point.