Wireless does not automatically reconnect after suspend

[Ferry Toth]

In Kubuntu Trusty this problem did not occur, even though I was using the same kernel (3.17.2) from kernel ppa.

In Utopic when I suspend my computer and then wake it up, after login into the screen saver, plasma-nm endlessly tries to to reconnect to my wifi AP, without succes. Manually stopping this and then trying to reconnect does not work.

Note that scanning for AP's is working and the list of available acces points is shown.

Sometimes it is possible from plasma-nm to disable/enable wifi and manually connect to *another* AP (I have 2), other times I need to restart the service network-manager.

I can provide logs if that would help.

A workaround for now:
Disabling 'automatically connect to the network when it is available' and then manually connect after waking up.

As far as I can tell, network-manager version did not change substantial between 14.04 and 14.10, while plasma-nm went from 0.9.3.3 to 0.9.3.4.

ProblemType: Bug
DistroRelease: Ubuntu 14.10
Package: plasma-nm 0.9.3.4-1
Uname: Linux 3.17.2-031702-generic x86_64
ApportVersion: 2.14.7-0ubuntu8
Architecture: amd64
CurrentDesktop: KDE
Date: Sat Nov 22 18:40:14 2014
SourcePackage: plasma-nm
UpgradeStatus: Upgraded to utopic on 2014-10-23 (29 days ago)

[Launchpad Janitor (janitor)]

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

[Ferry Toth (ftoth)]

This bug was solved by by upgrading to a newer kernel from Kernel PPA and disappeared with Kubuntu Vivid entirely. It was probably caused by a bug in the wifi kernel module.

It has not reoccurred in Wily.

For me, this can be closed.

[Paul White (paulw2u)]

Ubuntu 14.10 (utopic) reached end-of-life on July 23, 2015.
Re reporter's comment #3, fixed in vivid and wily so closing.