Dell pro venue 11 - No wireless connections after sleep

[stef-baly]

I try for a long time to set-up the wifi for my dell pro venue 11 (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 (picture).

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 !

Is there a command to force the wifi card ?

Thanks U

Stef

[Hadaka]

Hi open a terminal ctl/alt/t then copy and paste

echo SUSPEND_MODULES="iwlwifi" | sudo tee -a /etc/pm/config.d/config

sudo iw reg set FR
sudo sed -i 's/^REG.*=$/&FR/' /etc/default/crda

BOOT

[stef-baly]

thanks U but no effect !...

[Hadaka]

give this a try.. from here
http://askubuntu.com/questions/61416.../614584#614584

Please COPY and paste to avoid typos.

sudo mv /lib/firmware/iwlwifi-3160-12.ucode /lib/firmware/backup-iwlwifi-3160-12.ucode
sudo mv /lib/firmware/iwlwifi-3160-10.ucode /lib/firmware/backup-iwlwifi-3160-10.ucode

*If it didnt work..restore to original code with..

sudo mv /lib/firmware/backup-iwlwifi-3160-12.ucode /lib/firmware/iwlwifi-3160-12.ucode
sudo mv /lib/firmware/backup-iwlwifi-3160-10.ucode /lib/firmware/iwlwifi-3160-10.ucode

thanks.

[stef-baly]

Still doesn't work !
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.
I must reboot.

Thanks

[stef-baly]

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
baly@utopie:~$ ^C