Public bug reported:
After sleep mode, the Wi-Fi chip is not recognized by the kernel module
and therefore is not available. It is recognized after a reboot or after
hibernating though.
I have tried a lot of possibilities. Someone suggested the following command:
sudo nmcli nm sleep false
But it does nothing.
This has nothing to do with the hardware Wi-Fi switch. I know its
purpose and tried switching on and off.
Also, the output of the command nmcli nm, nmcli c and nmcli d after
coming back from sleep mode is showed below. Notice nmcli d shows no
wlan1 device (which is how my wireless device is identified normally).
mario@mario-Compaq-Presario-laptop:~$ nmcli nm
ÉTAT FONCT. ÉTAT MATÉRIEL-WIFI WIFI MATÉRIEL-WWAN WWAN
actif connecté activé activé activé
activé
mario@mario-Compaq-Presario-laptop:~$ nmcli c
NOM UUID TYPE
TIMESTAMP-REAL
Connexion filaire 1 cdf0b2eb-484c-4cb9-85fe-ca2d4b717505 802-3-ethernet
mar 04 aoû 2015 23:06:56 EDT
JeLisVosCourriels dcefe472-5b7b-4ae5-9066-0acdf1aec24b
802-11-wireless mar 04 aoû 2015 22:57:57 EDT
mario@mario-Compaq-Presario-laptop:~$ nmcli d
PÉRIPHÉRIQUE TYPE ÉTAT
eth1 802-3-ethernet connecté
Last but not least, the output of dmesg | grep iwl (after sleep) is
[ 693.890526] iwl3945 0000:01:00.0: bad EEPROM signature,EEPROM_GP=0x00000007
[ 693.890532] iwl3945 0000:01:00.0: EEPROM not found, EEPROM_GP=0xffffffff
[ 693.890563] iwl3945 0000:01:00.0: Unable to init EEPROM
[ 693.890713] iwl3945: probe of 0000:01:00.0 failed with error -2
And I think this tells it all.
Ubuntu release 14.04 Ubuntu 14.04.2 LTS
Wi-Fi chip is Intel 3945ABG and module is iwl3945.
ProblemType: Bug
DistroRelease: Ubuntu 14.04
Package: linux-image-3.16.0-45-generic 3.16.0-45.60~14.04.1
ProcVersionSignature: Ubuntu 3.16.0-45.60~14.04.1-generic 3.16.7-ckt14
Uname: Linux 3.16.0-45-generic x86_64
NonfreeKernelModules: wl
ApportVersion: 2.14.1-0ubuntu3.11
Architecture: amd64
CurrentDesktop: Unity
Date: Thu Aug 6 19:49:20 2015
InstallationDate: Installed on 2015-07-25 (12 days ago)
InstallationMedia: Ubuntu 14.04.2 LTS "Trusty Tahr" - Release amd64 (20150218.1)
SourcePackage: linux-lts-utopic
UpgradeStatus: No upgrade log present (probably fresh install)
** Affects: linux-lts-utopic (Ubuntu)
Importance: Undecided
Status: New
** Tags: amd64 apport-bug trusty
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https://bugs.launchpad.net/bugs/1482435
Title:
Wi-Fi not working after Sleep
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