Public bug reported:

Once in a long while when I bring my laptop out of sleep, the wifi fails
to connect.  I don't see any obvious issues except that the kernel log
shows that the wifi link is not ready.

When I removed and reinserted iwlwifi, the network came up as expected.

ProblemType: Bug
DistroRelease: Ubuntu 16.04
Package: linux-image-4.4.0-24-generic 4.4.0-24.43
ProcVersionSignature: Ubuntu 4.4.0-24.43-generic 4.4.10
Uname: Linux 4.4.0-24-generic x86_64
ApportVersion: 2.20.1-0ubuntu2.1
Architecture: amd64
AudioDevicesInUse:
 USER        PID ACCESS COMMAND
 /dev/snd/controlC0:  jlquinn    2071 F.... pulseaudio
 /dev/snd/controlC1:  jlquinn    2071 F.... pulseaudio
CurrentDesktop: Unity
Date: Thu Jun 23 11:32:25 2016
HibernationDevice: RESUME=UUID=adf511cb-b113-4140-a5aa-aface6335c7f
InstallationDate: Installed on 2015-08-18 (309 days ago)
InstallationMedia: Ubuntu 15.04 "Vivid Vervet" - Release amd64 (20150422)
MachineType: LENOVO 20BS003BUS
ProcFB: 0 inteldrmfb
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.4.0-24-generic 
root=UUID=b7935dc9-2ee9-4776-b8ba-55f007225779 ro quiet splash vt.handoff=7
RelatedPackageVersions:
 linux-restricted-modules-4.4.0-24-generic N/A
 linux-backports-modules-4.4.0-24-generic  N/A
 linux-firmware                            1.157
SourcePackage: linux
UpgradeStatus: Upgraded to xenial on 2016-04-28 (56 days ago)
dmi.bios.date: 03/12/2015
dmi.bios.vendor: LENOVO
dmi.bios.version: N14ET28W (1.06 )
dmi.board.asset.tag: Not Available
dmi.board.name: 20BS003BUS
dmi.board.vendor: LENOVO
dmi.board.version: SDK0E50510 WIN
dmi.chassis.asset.tag: No Asset Information
dmi.chassis.type: 10
dmi.chassis.vendor: LENOVO
dmi.chassis.version: None
dmi.modalias: 
dmi:bvnLENOVO:bvrN14ET28W(1.06):bd03/12/2015:svnLENOVO:pn20BS003BUS:pvrThinkPadX1Carbon3rd:rvnLENOVO:rn20BS003BUS:rvrSDK0E50510WIN:cvnLENOVO:ct10:cvrNone:
dmi.product.name: 20BS003BUS
dmi.product.version: ThinkPad X1 Carbon 3rd
dmi.sys.vendor: LENOVO

** Affects: linux (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: amd64 apport-bug xenial

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https://bugs.launchpad.net/bugs/1595605

Title:
  Intel wireless fails to connect after wake from sleep

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