This sounds a lot like a kernel issue to me.
What happens after resume, does the iwconfig command still list the wifi
device? Are killswitches listed in 'rfkill list'?
This is relevant because there is some chance that this is in fact
caused by a memory bug that gets more easily triggered through
suspend/resume.
** Changed in: network-manager (Ubuntu)
Status: New => Incomplete
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https://bugs.launchpad.net/bugs/1051816
Title:
No Wi-Fi at startup; disabling and enabling wireless fixes it --
Realtek RTL8188CE rtl8192ce
Status in “network-manager” package in Ubuntu:
Incomplete
Bug description:
Ubuntu12.04.1
1) Shutdown the PC
2) reboot the PC, start the Ubuntu session
Expected result: Wi-Fi networks are detected in the Network applet
Observed result: no networks appear in the Network applet. Disabling
and enabling wireless fixes it.
May be linked to Bug #1051084
Below are the Apport files before disabling/enabling wireless.
ProblemType: Bug
DistroRelease: Ubuntu 12.04
Package: network-manager 0.9.4.0-0ubuntu4.1
ProcVersionSignature: Ubuntu 3.2.0-30.48-generic 3.2.27
Uname: Linux 3.2.0-30-generic x86_64
ApportVersion: 2.0.1-0ubuntu13
Architecture: amd64
CRDA:
country EC:
(2402 - 2482 @ 40), (N/A, 20)
(5170 - 5250 @ 20), (3, 17)
(5250 - 5330 @ 20), (3, 23), DFS
(5735 - 5835 @ 20), (3, 30)
Date: Mon Sep 17 08:36:50 2012
IfupdownConfig:
auto lo
iface lo inet loopback
InstallationMedia: Ubuntu 12.04 LTS "Precise Pangolin" - Release amd64
(20120425)
IpRoute:
NetworkManager.state:
[main]
NetworkingEnabled=true
WirelessEnabled=true
WWANEnabled=true
WimaxEnabled=true
RfKill:
0: phy0: Wireless LAN
Soft blocked: no
Hard blocked: no
SourcePackage: network-manager
UpgradeStatus: No upgrade log present (probably fresh install)
nmcli-con:
NAME UUID TYPE
TIMESTAMP TIMESTAMP-REAL AUTOCONNECT READONLY
DBUS-PATH
Wired connection 1 68688f58-1e37-4cf1-8716-ab2423525464
802-3-ethernet 1347863714 lun. 17 sept. 2012 08:35:14 CEST yes
no /org/freedesktop/NetworkManager/Settings/1
NUMERICABLE-BDB7 6285f33d-ba83-4866-8ace-b67ed4ca4485
802-11-wireless 1347841081 lun. 17 sept. 2012 02:18:01 CEST yes
no /org/freedesktop/NetworkManager/Settings/0
nmcli-dev:
DEVICE TYPE STATE DBUS-PATH
eth0 802-3-ethernet unavailable
/org/freedesktop/NetworkManager/Devices/1
wlan0 802-11-wireless disconnected
/org/freedesktop/NetworkManager/Devices/0
nmcli-nm:
RUNNING VERSION STATE NET-ENABLED WIFI-HARDWARE
WIFI WWAN-HARDWARE WWAN
running 0.9.4.0 disconnected enabled enabled
enabled enabled disabled
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