Wifi doesn't reconnect after waking from sleep

[michael bode]

Upgraded from 14.04 to 14.10. Before Wifi would reconnect after waking up from sleep mode. After Update reconnect fails with wlan0: aborting authentication with 1c:c6:3c:95:e7:74 by local choice (Reason: 3=DEAUTH_LEAVING).

I worked around this by killing wpa_supplicant with a script in /etc/pm/sleep.d

#!/bin/sh

case "$1" in
        thaw|resume)
                { killall wpa_supplicant ; } 2>/dev/null
                ;;
        *)
                ;;
esac

exit $?

ProblemType: Bug
DistroRelease: Ubuntu 14.10
Package: network-manager 0.9.8.8-0ubuntu28
ProcVersionSignature: Ubuntu 3.16.0-24.32-generic 3.16.4
Uname: Linux 3.16.0-24-generic x86_64
ApportVersion: 2.14.7-0ubuntu8
Architecture: amd64
CurrentDesktop: KDE
Date: Sat Nov 8 11:43:15 2014
EcryptfsInUse: Yes
IfupdownConfig:
 # interfaces(5) file used by ifup(8) and ifdown(8)
 auto lo
 iface lo inet loopback
InstallationDate: Installed on 2013-04-19 (567 days ago)
InstallationMedia: Kubuntu 13.04 "Raring Ringtail" - Alpha amd64 (20130402.1)
IpRoute:
 default via 192.168.138.251 dev wlan0 proto static
 192.168.122.0/24 dev virbr0 proto kernel scope link src 192.168.122.1
 192.168.138.0/24 dev wlan0 proto kernel scope link src 192.168.138.143 metric 9
NetworkManager.state:
 [main]
 NetworkingEnabled=true
 WirelessEnabled=true
 WWANEnabled=true
 WimaxEnabled=true
SourcePackage: network-manager
UpgradeStatus: Upgraded to utopic on 2014-11-07 (0 days ago)
nmcli-nm:
 RUNNING VERSION STATE NET-ENABLED WIFI-HARDWARE WIFI WWAN-HARDWARE WWAN
 running 0.9.8.8 connected enabled enabled enabled enabled enabled

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.

[Peter Ullinger (upthere)]

Similiar error message to my bug: https://bugs.launchpad.net/ubuntu/+source/network-manager/+bug/1408963

Perhaps dupicate? Although, this bug is triggered by suspend, while mine shows up randomly.

[Peter Ullinger (upthere)]

https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1386863 Similiar error message to my bug. Duplicate?

[Levi Bard (taktaktaktaktaktaktaktaktaktak)]

I have the same symptoms after upgrade from 14.10 to 15.04.

I'm attaching my ubuntu-bug output, but I can file a new bug if this is adjudged a different issue.

[Hans Deragon (deragon)]

I have this problem in Ubuntu 14.04 LTS Trusty Thar. I have a Lenovo W510 laptop. Could it be that this problem occurs with only a certain type of hardware? After all, not everybody using Ubuntu has this problem.

My hardware is: 03:00.0 Network controller: Intel Corporation Centrino Ultimate-N 6300 (rev 35)

[Jim Paq (jimmy-paquet)]

Same error on my 2012 X1 Carbon running 14.04.

[Michael Mess (michael-michaelmess)]

As not everybody experiences this issue:
Is the issue related to the WLAN network being HIDDEN/VISIBLE?

[Levi Bard (taktaktaktaktaktaktaktaktaktak)]

FWIW, my networks were not hidden.

[Vaclav Rehak (vaclav-n)]

There are so many open bugs on network-manager, wifi and resume that it's difficult to find the right one to comment on. Anyway, trying e.g. this one. Can the people having this problem comment on whether there is Docker installed on their system?

I am specifically asking this question because a colleague of mine claimed not have any problems with WiFi in Ubuntu but since he installed Docker, the WiFi became so unusable that he was forced to use wired connection. On my system network manager never worked good (being it 14.04 or 16.04) but I cannot comment on Docker as it was installed from the very beginning.

[Guillaume (guillaumehuardhughes)]

For me it happens on Ubuntu 18.04.
I'm on a surfacebook.

Directly if my pc go sleep, i lost the wifi connection.
I've to restart to have wifi connection.