Wi-Fi not working after Sleep

[Gilbert Dion]

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)

[Gilbert Dion (diong)]

Someone at Canonical told me it is surely a kernel or module bug. Every software or command line solution have been tried.

[penalvch (penalvch)]

Gilbert Dion, thank you for taking the time to report this bug and helping to make Ubuntu better. Please execute the following command only once, as it will automatically gather debugging information, in a terminal:
apport-collect 1482435

[Gilbert Dion (diong)]

I am sorry, I have no longer access to the computer on which this happened.
It belonged to a friend of a friend of mine and now the guy got back home
with it. He lives in another city. I can't even remember his name. Too bad!

Gilbert Dion

g

2015-12-19 13:20 GMT-05:00 Christopher M. Penalver <
<email address hidden>>:

> Gilbert Dion, thank you for taking the time to report this bug and helping
> to make Ubuntu better. Please execute the following command only once, as
> it will automatically gather debugging information, in a terminal:
> apport-collect 1482435
>
> ** Package changed: linux-lts-utopic (Ubuntu) => linux (Ubuntu)
>
> ** Changed in: linux (Ubuntu)
> Importance: Undecided => Low
>
> ** Changed in: linux (Ubuntu)
> Status: New => Incomplete
>
> --
> You received this bug notification because you are subscribed to the bug
> report.
> https://bugs.launchpad.net/bugs/1482435
>
> Title:
> Wi-Fi not working after Sleep
>
> Status in linux package in Ubuntu:
> Incomplete
>
> Bug description:
> 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
> NonfreeKernelM...

[penalvch (penalvch)]

Gilbert Dion, this bug report is being closed due to your last comment https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1482435/comments/4 regarding you don't have access to the hardware. For future reference you can manage the status of your own bugs by clicking on the current status in the yellow line and then choosing a new status in the revealed drop down box. You can learn more about bug statuses at https://wiki.ubuntu.com/Bugs/Status. Thank you again for taking the time to report this bug and helping to make Ubuntu better. Please submit any future bugs you may find.