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I try for a long time to set-up the wifi for my dell pro venue 11 v7130
(wifi chipset Intel Corporation Wireless 7260). The wifi connection is
perfect until the computer is suspend. After a suspend, even activating
the wifi from network manager is impossible. After suspend even an exit
doesn't reconnect to the wifi connection. It seems that the wifi chipset
is off and it's impossible to wake up.

Recently 15.04 has been update to 4.2 RC8. Nothing new !

A file unload_modules has been created.
/etc/pm/config.d with SUSPEND_MODULES="$SUSPEND_MODULES iwlwifi" without any effect.

sudo service network-manager restart doesn't work too !

Before suspend

@utopie:~$ sudo lshw -C network
*-network
description: Interface réseau sans fil
produit: Wireless 7260
fabriquant: Intel Corporation
identifiant matériel: 0
information bus: pci@0000:01:00.0
nom logique: wlan0
version: 83
numéro de série: 5c:51:4f:d9:2e:75
bits: 64 bits
horloge: 33MHz
fonctionnalités: pm msi pciexpress bus_master cap_list ethernet physical wireless
configuration: broadcast=yes driver=iwlwifi driverversion=4.2.0-040200rc8-generic firmware=25.30.13.0 ip=192.168.0.50 latency=0 link=yes multicast=yes wireless=IEEE 802.11abgn
ressources: irq:49 mémoire:f7d00000-f7d01fff
*-network DÉSACTIVÉ
description: Ethernet interface
identifiant matériel: 1
nom logique: wwan0
numéro de série: 1e:51:e0:b8:e1:da
fonctionnalités: ethernet physical
configuration: broadcast=yes driver=cdc_mbim driverversion=22-Aug-2005 firmware=CDC MBIM link=no multicast=yes

After suspend (no more wifi chipset !).
@utopie:~$ sudo lshw -C network
*-network DÉSACTIVÉ
description: Ethernet interface
identifiant matériel: 1
nom logique: wwan0
numéro de série: 1e:51:e0:b8:e1:da
fonctionnalités: ethernet physical
configuration: broadcast=yes driver=cdc_mbim driverversion=22-Aug-2005 firmware=CDC MBIM link=no multicast=yes
--- 
ApportVersion: 2.17.2-0ubuntu1.4
Architecture: amd64
CurrentDesktop: Unity
DistroRelease: Ubuntu 15.04
InstallationDate: Installed on 2015-04-23 (136 days ago)
InstallationMedia: Ubuntu 15.04 "Vivid Vervet" - Release amd64 (20150422)
Package: linux (not installed)
Tags:  vivid
Uname: Linux 4.2.0-040200rc8-generic x86_64
UnreportableReason: The running kernel is not an Ubuntu kernel
UpgradeStatus: No upgrade log present (probably fresh install)
UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo
_MarkForUpload: True

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


** Tags: apport-collected vivid
-- 
Dell pro venue 11 - No wireless connections after sleep 
https://bugs.launchpad.net/bugs/1492850
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